Catalog / jedchang.com.tw

SEO audit for jedchang.com.tw

Jed Chang

other

Health 65/100 (fair) · 28 pages crawled · generated 2026-08-26

Download Markdown report (feed to ChatGPT / Claude / Cursor)

我是 Jed Chang，是一位前端工程師 & 網頁設計師，從事網頁開發和設計相關工作，有著十多年的經驗。

pages crawled

indexable pages

errors

558

warnings

361

notices

orphan pages

broken links

Category breakdown

Category	Score	Warnings	Notices
Links	0	462	6
Agent Readiness	70	28	16
Security	70	28	51
Canonical	75	23	5
Content	83	16	31
Headings	99	1	0
Crawlability	100	0	21
Duplicate	100	0	22
Images	100	0	28
Mobile	100	0	5
Performance	100	0	47
Sitemap	100	0	23
Social	100	0	46
Structured Data	100	0	28
Titles	100	0	5
URL	100	0	27

Findings

Warnings (6 rules)

warning Control has no accessible name

Rule agent.control_no_name · Agent Readiness · 28 occurrence(s)

https://jedchang.com.tw/ — 134 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/2026WBC/ — 12 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — 12 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/ — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — 20 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — 16 button/link(s) with no text or aria-label — an agent can't target them
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — 16 button/link(s) with no text or aria-label — an agent can't target them

warning Missing canonical tag

Rule canonical.missing · Canonical · 23 occurrence(s)

warning Thin content (low word count)

Rule content.thin · Content · 16 occurrence(s)

https://jedchang.com.tw/portfolio-showcase/2026WBC/ — 42 words
https://jedchang.com.tw/portfolio-showcase/2026WBC/ct/ — 28 words
https://jedchang.com.tw/portfolio-showcase/2026WBC/news/ — 24 words
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — 24 words
https://jedchang.com.tw/portfolio-showcase/2026WBC/standings/ — 24 words
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — 121 words
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — 115 words
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — 160 words
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — 193 words
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — 129 words
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — 193 words
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — 115 words
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — 174 words
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — 165 words
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — 153 words
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — 139 words

warning Missing <h1>

Rule h1.missing · Headings · 1 occurrence(s)

https://jedchang.com.tw/portfolio-showcase/ESG/

warning Content-Type header doesn't match the actual content

Rule headers.content_type_mismatch · Security · 28 occurrence(s)

https://jedchang.com.tw/ — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/2026WBC/ — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/ — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".

warning Internal link points to a redirect

Rule links.redirect_target · Links · 462 occurrence(s)

https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace → https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation → https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety → https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance → https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management → https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management → https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products → https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology → https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance → https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment → https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/management/organization → https://jedchang.com.tw/portfolio-showcase/ESG/management/organization/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs → https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy → https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards → https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb → https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/sitemap → https://jedchang.com.tw/portfolio-showcase/ESG/sitemap/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation → https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management → https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba → https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy → https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy/
https://jedchang.com.tw/portfolio-showcase/ESG/ — https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use → https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use/
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance → https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance/
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment → https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment/
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — https://jedchang.com.tw/portfolio-showcase/ESG/management/organization → https://jedchang.com.tw/portfolio-showcase/ESG/management/organization/
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs → https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs/

Notices (20 rules)

notice Heading levels skip a level

Rule agent.heading_skip · Agent Readiness · 15 occurrence(s)

https://jedchang.com.tw/ — h4 follows h1 — skips h2
https://jedchang.com.tw/portfolio-showcase/ESG/ — h6 follows h3 — skips h4
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — h6 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — h4 follows h1 — skips h2
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — h4 follows h2 — skips h3
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — h4 follows h1 — skips h2

notice No llms.txt for AI agents

Rule agent.llms_txt_missing · Agent Readiness · 1 occurrence(s)

https://jedchang.com.tw/ — no llms.txt found at the site root — add one so AI agents get a curated site summary

notice Canonical points to a different URL

Rule canonical.non_self · Canonical · 5 occurrence(s)

https://jedchang.com.tw/portfolio-showcase/2026WBC/ — canonical=https://acts.setn.com/event/2026wbc/
https://jedchang.com.tw/portfolio-showcase/2026WBC/ct/ — canonical=https://acts.setn.com/event/2026wbc/
https://jedchang.com.tw/portfolio-showcase/2026WBC/news/ — canonical=https://acts.setn.com/event/2026wbc/
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — canonical=https://acts.setn.com/event/2026wbc/
https://jedchang.com.tw/portfolio-showcase/2026WBC/standings/ — canonical=https://acts.setn.com/event/2026wbc/

notice Low text-to-HTML ratio

Rule content.low_ratio · Content · 26 occurrence(s)

notice Duplicate meta description across pages

Rule duplicate.meta_desc · Duplicate · 22 occurrence(s)

https://jedchang.com.tw/portfolio-showcase/ESG/ — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap, https://jedchang.com.tw/portfolio-showcase/ESG/management/organization
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap, https://jedchang.com.tw/portfolio-showcase/ESG/management/organization
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/management/organization
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — meta description shared by 22 pages: https://jedchang.com.tw/portfolio-showcase/ESG/, https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment, https://jedchang.com.tw/portfolio-showcase/ESG/sitemap

notice Missing html lang attribute

Rule i18n.lang_missing · Mobile · 5 occurrence(s)

notice Likely hero image lacks fetchpriority=high

Rule images.hero_no_fetchpriority · Performance · 28 occurrence(s)

https://jedchang.com.tw/ — the likely hero/LCP image (thumb-web29.jpg) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/2026WBC/ — the likely hero/LCP image (kv-desktop.czmk87sm.jpg) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — the likely hero/LCP image (kv-desktop.czmk87sm.jpg) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/ — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — the likely hero/LCP image (svg+xml,%3c) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.

notice Images without width/height (layout shift / CLS)

Rule images.missing_dimensions · Images · 28 occurrence(s)

https://jedchang.com.tw/ — 86 of 86 images without width/height
https://jedchang.com.tw/portfolio-showcase/2026WBC/ — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/ — 22 of 22 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — 26 of 26 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — 20 of 20 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — 9 of 9 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — 8 of 8 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — 5 of 5 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — 7 of 7 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — 9 of 9 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — 8 of 8 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — 6 of 6 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — 37 of 37 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — 6 of 6 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — 4 of 4 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — 7 of 7 images without width/height
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — 4 of 4 images without width/height

notice Internal link has no anchor text / accessible name

Rule links.no_anchor_text · Links · 6 occurrence(s)

https://jedchang.com.tw/ — 8 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
https://jedchang.com.tw/portfolio-showcase/2026WBC/ — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
https://jedchang.com.tw/portfolio-showcase/2026WBC/ct/ — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
https://jedchang.com.tw/portfolio-showcase/2026WBC/news/ — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
https://jedchang.com.tw/portfolio-showcase/2026WBC/standings/ — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.

notice Legacy <meta name=keywords> tag present (Google ignores it)

Rule meta.keywords_present · Content · 5 occurrence(s)

https://jedchang.com.tw/portfolio-showcase/2026WBC/ — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
https://jedchang.com.tw/portfolio-showcase/2026WBC/ct/ — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
https://jedchang.com.tw/portfolio-showcase/2026WBC/news/ — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
https://jedchang.com.tw/portfolio-showcase/2026WBC/standings/ — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt

notice Missing Open Graph tags

Rule og.missing · Social · 23 occurrence(s)

https://jedchang.com.tw/ — og:title, og:description
https://jedchang.com.tw/portfolio-showcase/ESG/ — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — og:title, og:description, og:image
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — og:title, og:description, og:image

notice Legacy image format (jpg/png/gif) with no next-gen fallback

Rule perf.images_legacy_format · Performance · 19 occurrence(s)

https://jedchang.com.tw/ — 71 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/2026WBC/ — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/2026WBC/ct/ — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/2026WBC/news/ — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/2026WBC/standings/ — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/ — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — 22 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — 16 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — 5 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.

notice URL redirects to another URL

Rule redirect.single · Crawlability · 21 occurrence(s)

https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace/
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation/
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety/
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance/
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management/
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management/
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products/
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology/
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance/
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment/
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/management/organization/
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs/
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy/
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards/
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb/
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/sitemap/
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation/
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management/
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba/
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy/
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — redirects to https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use/

notice No structured data detected

Rule schema.none · Structured Data · 28 occurrence(s)

notice Missing recommended security headers

Rule security.missing_headers · Security · 28 occurrence(s)

https://jedchang.com.tw/ — X-Content-Type-Options, CSP
https://jedchang.com.tw/portfolio-showcase/2026WBC/ — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/ — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — X-Content-Type-Options, CSP
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — CSP, X-Content-Type-Options
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — CSP, X-Content-Type-Options

notice target=_blank link without rel=noopener (tab-napping)

Rule security.unsafe_cross_origin_links · Security · 23 occurrence(s)

https://jedchang.com.tw/ — 62 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/ — 13 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — 13 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — 13 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — 13 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — 12 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".

notice Indexable page not listed in sitemap

Rule sitemap.orphan_not_listed · Sitemap · 23 occurrence(s)

https://jedchang.com.tw/ — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/ — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy — indexable but not in sitemap
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — indexable but not in sitemap

notice Title is very short

Rule title.too_short · Titles · 5 occurrence(s)

https://jedchang.com.tw/ — 9 chars
https://jedchang.com.tw/portfolio-showcase/ESG/ — 8 chars
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy — 14 chars
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap — 13 chars
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use — 13 chars

notice Missing Twitter Card tag

Rule twitter.missing · Social · 23 occurrence(s)

notice Uppercase letters in URL path

Rule url.uppercase · URL · 27 occurrence(s)

Pages (showing 28 of 28)

URL	Status	Indexable	Words	In-links
https://jedchang.com.tw/portfolio-showcase/2026WBC/ 2026第六屆世界棒球經典賽｜三立新聞網 SETN.COM	200	yes	42	6
https://jedchang.com.tw/portfolio-showcase/ESG/ 精英電腦企業永續	200	yes	206	23
https://jedchang.com.tw/portfolio-showcase/2026WBC/ct/ 點將錄 - 2026第六屆世界棒球經典賽｜三立新聞網 SETN.COM	200	yes	28	5
https://jedchang.com.tw/portfolio-showcase/2026WBC/news/ 賽事報導 - 2026第六屆世界棒球經典賽｜三立新聞網 SETN.COM	200	yes	24	5
https://jedchang.com.tw/portfolio-showcase/2026WBC/schedule/ 最新賽程 - 2026第六屆世界棒球經典賽｜三立新聞網 SETN.COM	200	yes	24	5
https://jedchang.com.tw/portfolio-showcase/2026WBC/standings/ 分組戰績 - 2026第六屆世界棒球經典賽｜三立新聞網 SETN.COM	200	yes	24	5
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/friendly-workplace 友善職場｜員工與社會｜精英電腦企業永續	200	yes	325	22
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/social-participation 社會參與｜員工與社會｜精英電腦企業永續	200	yes	440	22
https://jedchang.com.tw/portfolio-showcase/ESG/employees-society/workplace-safety 職場安全｜員工與社會｜精英電腦企業永續	200	yes	257	22
https://jedchang.com.tw/portfolio-showcase/ESG/environment/climate-change-governance 氣候變遷治理｜環境永續｜精英電腦企業永續	200	yes	121	22
https://jedchang.com.tw/portfolio-showcase/ESG/environment/energy-management 能資源管理｜環境永續｜精英電腦企業永續	200	yes	115	22
https://jedchang.com.tw/portfolio-showcase/ESG/environment/gas-management 溫室氣體管理｜環境永續｜精英電腦企業永續	200	yes	254	22
https://jedchang.com.tw/portfolio-showcase/ESG/environment/green-products 綠色產品｜環境永續｜精英電腦企業永續	200	yes	468	22
https://jedchang.com.tw/portfolio-showcase/ESG/environment/innovative-technology 創新科技｜環境永續｜精英電腦企業永續	200	yes	236	22
https://jedchang.com.tw/portfolio-showcase/ESG/environment/performance 環境目標及績效｜環境永續｜精英電腦企業永續	200	yes	160	22
https://jedchang.com.tw/portfolio-showcase/ESG/management/commitment 永續承諾｜永續管理｜精英電腦企業永續	200	yes	193	22
https://jedchang.com.tw/portfolio-showcase/ESG/management/organization 永續推動組織｜永續管理｜精英電腦企業永續	200	yes	129	22
https://jedchang.com.tw/portfolio-showcase/ESG/management/sdgs 永續發展目標｜永續管理｜精英電腦企業永續	200	yes	299	22
https://jedchang.com.tw/portfolio-showcase/ESG/privacy-policy 隱私權政策｜精英電腦企業永續	200	yes	193	22
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/gri-standards GRI 準則指標對照表｜資源中心｜精英電腦企業永續	200	yes	219	22
https://jedchang.com.tw/portfolio-showcase/ESG/resource-center/sasb SASB 永續會計準則對照表｜資源中心｜精英電腦企業永續	200	yes	302	22
https://jedchang.com.tw/portfolio-showcase/ESG/sitemap 網站地圖｜精英電腦企業永續	200	yes	115	22
https://jedchang.com.tw/portfolio-showcase/ESG/stakeholders/stakeholder-negotiation 利害關係人議合與重大議題｜利害關係人議合｜精英電腦企業永續	200	yes	547	22
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/management 供應鏈管理｜永續供應鏈｜精英電腦企業永續	200	yes	174	22
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/rba 責任商業聯盟為行為準則｜永續供應鏈｜精英電腦企業永續	200	yes	165	22
https://jedchang.com.tw/portfolio-showcase/ESG/supply-chain/security-privacy 資訊安全與隱私保護｜永續供應鏈｜精英電腦企業永續	200	yes	153	22
https://jedchang.com.tw/portfolio-showcase/ESG/terms-of-use 使用條款｜精英電腦企業永續	200	yes	139	22
https://jedchang.com.tw/ Jed Chang	200	yes	498	1

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