Content

· 5 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Checks

2 PASS 2 REVIEW 1 FIX

Links

Action

133 links checked, 60 healthy, 73 broken

FIX

133 links checked, 60 healthy, 73 broken

60 of 133 links are healthy

Broken link: https://reactjs.org/rss.xml

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://1FCF9AYYAT-dsn.algolia.net

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/css/08c63e3f3aafb0fb.css

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/apple-touch-icon.png

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/favicon-16x16.png

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/site.webmanifest

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/safari-pinned-tab.svg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/polyfills-42372ed...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/webpack-c9ab623df...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/framework-76ad44d...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/main-8bc660a98b46...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/pages/_app-6d7b64...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/668-9be9de6fa7660...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/928-e89de0bd2e20f...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/chunks/pages/%5B%5B...ma...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/MNWyTLE_bcVMjrXmgoiBA/_b...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/static/MNWyTLE_bcVMjrXmgoiBA/_s...

Found in <script src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/uwu.png

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/cover.svg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/andrew.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/lauren.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/juan.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/rick.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/shruti.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/shaundai.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/aakansha.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/brian.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/xuan.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/rachel.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/debbie.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/sarah.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/linton.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/delba.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/robert.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/eric.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/steven.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/roman.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/daishi.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/diego.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/tafu.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/lyle.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2021/helen.jpg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/conf2019/cover.svg

Found in <link href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/image?url=%2Fimages%2Fuwu.png&w...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/reference/react

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/community

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/blog

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/community/translations

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/_next/image?url=%2Fimages%2Fuwu.png&w...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn/add-react-to-an-existing-project

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn/creating-a-react-app

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/blog/2026/02/24/the-react-foundation

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/blog/2025/12/11/denial-of-service-and...

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/blog/2025/12/03/critical-security-vul...

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/blog/2025/10/16/react-conf-2025-recap

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_conf_fun....

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_india_sun...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_conf_hall...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_india_hal...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_conf_eliz...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_india_sel...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_conf_nat....

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/images/home/community/react_india_tea...

Found in <img src>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn/installation

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn/describing-the-ui

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn/adding-interactivity

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn/managing-state

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/learn/escape-hatches

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/reference/react-dom

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/community/team

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/community/docs-contributors

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

Broken link: https://reactjs.org/community/acknowledgements

Found in <a href>. Returns HTTP 404.

Got: HTTP 404

133 total 59 healthy 73 broken 1 redirects

Broken Links (50)

Status	URL	Found in	Error
404	https://reactjs.org/rss.xml	`<link>`	Not Found
404	https://1FCF9AYYAT-dsn.algolia.net	`<link>`	Not Found
404	https://reactjs.org/_next/static/css/08c63e3f3aafb...	`<link>`	Not Found
404	https://reactjs.org/apple-touch-icon.png	`<link>`	Not Found
404	https://reactjs.org/favicon-16x16.png	`<link>`	Not Found
404	https://reactjs.org/site.webmanifest	`<link>`	Not Found
404	https://reactjs.org/safari-pinned-tab.svg	`<link>`	Not Found
404	https://reactjs.org/_next/static/chunks/polyfills-...	`<script>`	Not Found
404	https://reactjs.org/_next/static/chunks/webpack-c9...	`<script>`	Not Found
404	https://reactjs.org/_next/static/chunks/framework-...	`<script>`	Not Found
404	https://reactjs.org/_next/static/chunks/main-8bc66...	`<script>`	Not Found
404	https://reactjs.org/_next/static/chunks/pages/_app...	`<script>`	Not Found
404	https://reactjs.org/_next/static/chunks/668-9be9de...	`<script>`	Not Found
404	https://reactjs.org/_next/static/chunks/928-e89de0...	`<script>`	Not Found
404	https://reactjs.org/_next/static/chunks/pages/%5B%...	`<script>`	Not Found
404	https://reactjs.org/_next/static/MNWyTLE_bcVMjrXmg...	`<script>`	Not Found
404	https://reactjs.org/_next/static/MNWyTLE_bcVMjrXmg...	`<script>`	Not Found
404	https://reactjs.org/images/uwu.png	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/cover.svg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/andrew.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/lauren.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/juan.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/rick.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/shruti.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/shaundai....	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/aakansha....	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/brian.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/xuan.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/rachel.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/debbie.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/sarah.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/linton.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/delba.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/robert.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/eric.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/steven.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/roman.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/daishi.jp...	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/diego.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/tafu.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/lyle.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2021/helen.jpg	`<link>`	Not Found
404	https://reactjs.org/images/home/conf2019/cover.svg	`<link>`	Not Found
404	https://reactjs.org/_next/image?url=%2Fimages%2Fuw...	`<img>`	Not Found
404	https://reactjs.org/learn	`<a>`	Not Found
404	https://reactjs.org/reference/react	`<a>`	Not Found
404	https://reactjs.org/community	`<a>`	Not Found
404	https://reactjs.org/blog	`<a>`	Not Found
404	https://reactjs.org/community/translations	`<a>`	Not Found
404	https://reactjs.org/_next/image?url=%2Fimages%2Fuw...	`<img>`	Not Found

Structured Data

Action

No structured data (JSON-LD) found.

REVIEW

No structured data (JSON-LD) found.

No structured data (JSON-LD) found

Adding structured data helps search engines understand your content and can enable rich results.

Why this matters

Without schema.org markup, your pages can't appear as rich results (stars, FAQs, recipes) in search.

Learn more ▾

Structured data is what unlocks rich snippets — review stars, FAQ accordions, recipe cards, breadcrumbs, etc. — that take up more SERP space and dramatically improve click-through. The schema.org vocabulary is well-documented and JSON-LD is the easiest format.

Source: Google Search Central / schema.org

No structured data found

Structured data (JSON-LD) helps search engines understand your content better. Adding it can improve your search result appearance.

Common types include:

WebSite — your site identity and search box
Organization — your company information
Article — blog posts and news articles
Product — e-commerce product pages
BreadcrumbList — navigation paths

Learn more at schema.org

Brand Presence

Action

Site-name consistency, favicon, social image, meta tags, schema, and contact signals

REVIEW

Brand Presence

Your brand name differs across channels — visitors see inconsistent identity.

60/100

Site name appears as

Page title	React
og:site_name	—
twitter:site	@reactjs
Organization.name	—

Inconsistent — names differ across channels

Brand assets

Favicon

15/15

covers multiple sizes + apple-touch-icon

Social share image

20/20

og:image + twitter:image set

Meta completeness

20/20

Organization schema

0/15

Contact info discoverable

0/10

no contact info discoverable

Findings

Brand name differs across channels — users see inconsistent identity
No Organization schema — Google can't render your logo in the knowledge panel
No discoverable contact info — trust signal is weak, legal risk is higher in regulated regions

How consistently your brand appears across channels — shared link previews, structured data, favicon, contact info.

A+

Mixed Content

No mixed content detected — all resources use HTTPS.

PASS

No mixed content detected — all resources use HTTPS.

No mixed content detected — all resources use HTTPS

Open Graph

Open Graph tags are well configured for social sharing.

PASS

Open Graph tags are well configured for social sharing.

og:title is short (5 characters)

Ideal length is 25–60 characters for social sharing previews.

Got: 5 chars Expected: 25–60 chars

og:description is long (260 characters)

Descriptions over 200 characters may be truncated in social sharing previews.

Got: 260 chars Expected: 55–200 chars

Missing og:site_name

The og:site_name tag displays the website name in social previews.

URL: 5 chars

Ideal length is 25–60 characters for social sharing previews.

Expected: 25–60 chars

Why this matters

og:title very short — may render with awkward whitespace in social cards.

Source: Open Graph Protocol

URL: 260 chars

Descriptions over 200 characters may be truncated in social sharing previews.

Expected: 55–200 chars

Why this matters

og:description borderline-too-long — social platforms truncate around ~200 chars.

Source: Open Graph Protocol

The og:site_name tag displays the website name in social previews.

Why this matters

Without og:site_name, social cards omit the brand attribution — users see the post but not who published it.

Learn more ▾

og:site_name appears in the social card chrome (above the title in Facebook/LinkedIn previews). Without it, posts read as anonymous URLs. Set it to your brand name to get free attribution on every share.

Source: Open Graph Protocol

Preview

reactjs.org

React

React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations.

Preview quality · Twitter/X A+ · 95/100

Description will be truncated (260 chars / 200 max)

twitter:card — summary_large_image
twitter:title — React
twitter:description — React is the library for web and native user interfaces. Build user interfaces out of individual pieces called compon...
twitter:image — https://react.dev/images/og-home.png

Description will be truncated on Twitter/X (260 chars, max 200)
→ Tighten the description to ≤200 characters

REACTJS.ORG

React

Preview quality · Facebook B · 80/100

Description will be truncated (260 chars / 155 max)

og:title — React
og:description — React is the library for web and native user interfaces. Build user interfaces out of individual pieces called compon...
og:image — https://react.dev/images/og-home.png
og:type — website
og:url — https://react.dev/
og:site_name — Add og:site_name — Recommended — site-level brand line in the preview

Description will be truncated on Facebook (260 chars, max 155)
→ Tighten og:description to ≤155 characters

React

reactjs.org

Preview quality · LinkedIn A+ · 95/100

Description will be truncated (260 chars / 150 max)

og:title — React
og:description — React is the library for web and native user interfaces. Build user interfaces out of individual pieces called compon...
og:image — https://react.dev/images/og-home.png

Description will be truncated on LinkedIn (260 chars, max 150)
→ Tighten og:description to ≤150 characters

reactjs.org

React

Preview quality · Slack A+ · 100/100

og:title — React
og:description — React is the library for web and native user interfaces. Build user interfaces out of individual pieces called compon...
og:image — https://react.dev/images/og-home.png

Social preview quality

Averaged across Twitter/X, Facebook, LinkedIn, and Slack.

A · 92/100

Field	Facebook	LinkedIn	Slack
og:title
og:description
og:image
og:type
og:url
og:site_name
twitter:card	—	—	—
twitter:title	—	—	—
twitter:description	—	—	—
twitter:image	—	—	—

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.