React https://react.dev
React Developer Docs
Testing the React documentation site — interactive examples, API reference, hooks guide, and tutorial pages.
Pages
20
Tests
98 / 106
SEO
53
Security
F
Interactions
36
Blog 45 cases
AI-generated test cases for https://react.dev/blog
React 15 cases
AI-generated test cases for https://react.dev/
Blog - 2022 - 03 - 29 - React V18 0 cases
AI-generated test cases for https://react.dev/blog/2022/03/29/react-v18
Blog - 2021 - 06 - 08 - The Plan For React 18 18 cases
AI-generated test cases for https://react.dev/blog/2021/06/08/the-plan-for-react-18
Blog - 2022 - 03 - 08 - React 18 Upgrade Guide 14 cases
AI-generated test cases for https://react.dev/blog/2022/03/08/react-18-upgrade-guide
Blog - 2023 - 03 - 16 - Introducing React Dev 0 cases
AI-generated test cases for https://react.dev/blog/2023/03/16/introducing-react-dev
Blog - 2024 - 05 - 22 - React Conf 2024 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2024/05/22/react-conf-2024-recap
Blog - 2024 - 12 - 05 - React 19 0 cases
AI-generated test cases for https://react.dev/blog/2024/12/05/react-19
Blog - 2023 - 03 - 22 - React Labs What We Have Been Working On March 2023 0 cases
AI-generated test cases for https://react.dev/blog/2023/03/22/react-labs-what-we-have-been-working-on-march-2023
Blog - 2021 - 12 - 17 - React Conf 2021 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2021/12/17/react-conf-2021-recap
Blog - 2025 - 10 - 01 - React 19 2 0 cases
AI-generated test cases for https://react.dev/blog/2025/10/01/react-19-2
Blog - 2022 - 06 - 15 - React Labs What We Have Been Working On June 2022 0 cases
AI-generated test cases for https://react.dev/blog/2022/06/15/react-labs-what-we-have-been-working-on-june-2022
Blog - 2025 - 10 - 16 - React Conf 2025 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2025/10/16/react-conf-2025-recap
Blog - 2025 - 12 - 03 - Critical Security Vulnerability In React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
Hybrid Tests: Home 1 cases
AI-discovered user flows with deterministic assertions for https://react.dev/blog/2025/02/14/sunsetting-create-react-app
Blog - 2020 - 12 - 21 - Data Fetching With React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2020/12/21/data-fetching-with-react-server-components
Blog - 2023 - 05 - 03 - React Canaries 0 cases
AI-generated test cases for https://react.dev/blog/2023/05/03/react-canaries
Blog - 2025 - 02 - 14 - Sunsetting Create React App 0 cases
AI-generated test cases for https://react.dev/blog/2025/02/14/sunsetting-create-react-app
Blog - 2025 - 12 - 11 - Denial Of Service And Source Code Exposure In React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components
Blog - 2024 - 02 - 15 - React Labs What We Have Been Working On February 2024 0 cases
AI-generated test cases for https://react.dev/blog/2024/02/15/react-labs-what-we-have-been-working-on-february-2024
Blog - 2026 - 02 - 24 - The React Foundation 0 cases
AI-generated test cases for https://react.dev/blog/2026/02/24/the-react-foundation
Interaction Tests: How to Upgrade to React 18 – React 4 cases
Multi-step interaction tests for https://react.dev/blog/2022/03/08/react-18-upgrade-guide — reconstructed from crawl action paths
Interaction Tests: The Plan for React 18 – React 6 cases
Multi-step interaction tests for https://react.dev/blog/2021/06/08/the-plan-for-react-18 — reconstructed from crawl action paths
53 SEO score
Title
React
Description
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.
warning
Title too short (5 chars)
Title should be 50-60 characters
warning
Description too long (260 chars)
Description should be 150-160 characters
warning
Multiple H1 headings (2)
Use only one H1 heading per page
error
1 images missing alt text
Add descriptive alt text to all images
warning
7 links without text
Add descriptive text or aria-label to all links
info
No structured data found
Add JSON-LD structured data for rich snippets
info
Low text-to-HTML ratio (3.43%)
Reduce HTML bloat or add more text content
F Security grade · score 24
Strict-Transport-Security
X-Content-Type-Options medium
X-Frame-Options medium
X-XSS-Protection low
Referrer-Policy low
Permissions-Policy low
Content-Security-Policy critical
268 ms
First paint
374 ms
Load
104 ms
TTFB
250 ms
DOM ready
No accessibility violations found.
Blog 45 cases
AI-generated test cases for https://react.dev/blog
Blog - 2022 - 03 - 29 - React V18 0 cases
AI-generated test cases for https://react.dev/blog/2022/03/29/react-v18
Blog - 2021 - 06 - 08 - The Plan For React 18 18 cases
AI-generated test cases for https://react.dev/blog/2021/06/08/the-plan-for-react-18
Blog - 2022 - 03 - 08 - React 18 Upgrade Guide 14 cases
AI-generated test cases for https://react.dev/blog/2022/03/08/react-18-upgrade-guide
Blog - 2023 - 03 - 16 - Introducing React Dev 0 cases
AI-generated test cases for https://react.dev/blog/2023/03/16/introducing-react-dev
Blog - 2024 - 05 - 22 - React Conf 2024 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2024/05/22/react-conf-2024-recap
Blog - 2024 - 12 - 05 - React 19 0 cases
AI-generated test cases for https://react.dev/blog/2024/12/05/react-19
Blog - 2023 - 03 - 22 - React Labs What We Have Been Working On March 2023 0 cases
AI-generated test cases for https://react.dev/blog/2023/03/22/react-labs-what-we-have-been-working-on-march-2023
Blog - 2021 - 12 - 17 - React Conf 2021 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2021/12/17/react-conf-2021-recap
Blog - 2025 - 10 - 01 - React 19 2 0 cases
AI-generated test cases for https://react.dev/blog/2025/10/01/react-19-2
Blog - 2022 - 06 - 15 - React Labs What We Have Been Working On June 2022 0 cases
AI-generated test cases for https://react.dev/blog/2022/06/15/react-labs-what-we-have-been-working-on-june-2022
Blog - 2025 - 10 - 16 - React Conf 2025 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2025/10/16/react-conf-2025-recap
Blog - 2025 - 12 - 03 - Critical Security Vulnerability In React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
Hybrid Tests: Home 1 cases
AI-discovered user flows with deterministic assertions for https://react.dev/blog/2025/02/14/sunsetting-create-react-app
Blog - 2020 - 12 - 21 - Data Fetching With React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2020/12/21/data-fetching-with-react-server-components
Blog - 2023 - 05 - 03 - React Canaries 0 cases
AI-generated test cases for https://react.dev/blog/2023/05/03/react-canaries
Blog - 2025 - 02 - 14 - Sunsetting Create React App 0 cases
AI-generated test cases for https://react.dev/blog/2025/02/14/sunsetting-create-react-app
Blog - 2025 - 12 - 11 - Denial Of Service And Source Code Exposure In React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components
Blog - 2024 - 02 - 15 - React Labs What We Have Been Working On February 2024 0 cases
AI-generated test cases for https://react.dev/blog/2024/02/15/react-labs-what-we-have-been-working-on-february-2024
Blog - 2026 - 02 - 24 - The React Foundation 0 cases
AI-generated test cases for https://react.dev/blog/2026/02/24/the-react-foundation
Interaction Tests: How to Upgrade to React 18 – React 4 cases
Multi-step interaction tests for https://react.dev/blog/2022/03/08/react-18-upgrade-guide — reconstructed from crawl action paths
Interaction Tests: The Plan for React 18 – React 6 cases
Multi-step interaction tests for https://react.dev/blog/2021/06/08/the-plan-for-react-18 — reconstructed from crawl action paths
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2025 - 12 - 03 - Critical Security Vulnerability In React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2025 - 10 - 16 - React Conf 2025 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2025/10/16/react-conf-2025-recap
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2025 - 12 - 11 - Denial Of Service And Source Code Exposure In React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2020 - 12 - 21 - Data Fetching With React Server Components 0 cases
AI-generated test cases for https://react.dev/blog/2020/12/21/data-fetching-with-react-server-components
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2026 - 02 - 24 - The React Foundation 0 cases
AI-generated test cases for https://react.dev/blog/2026/02/24/the-react-foundation
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2021 - 06 - 08 - The Plan For React 18 18 cases
AI-generated test cases for https://react.dev/blog/2021/06/08/the-plan-for-react-18
Interaction Tests: The Plan for React 18 – React 6 cases
Multi-step interaction tests for https://react.dev/blog/2021/06/08/the-plan-for-react-18 — reconstructed from crawl action paths
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2022 - 03 - 29 - React V18 0 cases
AI-generated test cases for https://react.dev/blog/2022/03/29/react-v18
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2022 - 03 - 08 - React 18 Upgrade Guide 14 cases
AI-generated test cases for https://react.dev/blog/2022/03/08/react-18-upgrade-guide
Interaction Tests: How to Upgrade to React 18 – React 4 cases
Multi-step interaction tests for https://react.dev/blog/2022/03/08/react-18-upgrade-guide — reconstructed from crawl action paths
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2021 - 12 - 17 - React Conf 2021 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2021/12/17/react-conf-2021-recap
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2025 - 10 - 01 - React 19 2 0 cases
AI-generated test cases for https://react.dev/blog/2025/10/01/react-19-2
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2022 - 06 - 15 - React Labs What We Have Been Working On June 2022 0 cases
AI-generated test cases for https://react.dev/blog/2022/06/15/react-labs-what-we-have-been-working-on-june-2022
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Hybrid Tests: Home 1 cases
AI-discovered user flows with deterministic assertions for https://react.dev/blog/2025/02/14/sunsetting-create-react-app
Blog - 2025 - 02 - 14 - Sunsetting Create React App 0 cases
AI-generated test cases for https://react.dev/blog/2025/02/14/sunsetting-create-react-app
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2023 - 03 - 22 - React Labs What We Have Been Working On March 2023 0 cases
AI-generated test cases for https://react.dev/blog/2023/03/22/react-labs-what-we-have-been-working-on-march-2023
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2024 - 02 - 15 - React Labs What We Have Been Working On February 2024 0 cases
AI-generated test cases for https://react.dev/blog/2024/02/15/react-labs-what-we-have-been-working-on-february-2024
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2023 - 05 - 03 - React Canaries 0 cases
AI-generated test cases for https://react.dev/blog/2023/05/03/react-canaries
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2023 - 03 - 16 - Introducing React Dev 0 cases
AI-generated test cases for https://react.dev/blog/2023/03/16/introducing-react-dev
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2024 - 12 - 05 - React 19 0 cases
AI-generated test cases for https://react.dev/blog/2024/12/05/react-19
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
Blog - 2024 - 05 - 22 - React Conf 2024 Recap 0 cases
AI-generated test cases for https://react.dev/blog/2024/05/22/react-conf-2024-recap
— SEO score
Title
—
Description
—
No SEO issues found.
— Security grade · score —
No security headers data.
—
First paint
—
Load
—
TTFB
—
DOM ready
No accessibility violations found.
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