This page's audience real numbers from our own analytics — open to see them

Period

–Visitors

–Page views

–Clicks to vendors

–Time on page

–Reading now

Clicks to vendors, by tool

Top countries

Devices

– · counted by iTechGuides's own first-party analytics, bots removed, every figure rounded down · how we count

Web Platform Tests

Free#16 of 27 in Cross-Browser Testing SoftwareBrowser Testing Software

Web Platform Tests: A focused, free toolkit for web-platform conformance and interoperability testing. Ranked #16 of 27 in Cross-Browser Testing Software by our editors (7.1/10); pricing: Open source; best for web-platform conformance and standards testing.

7.1/10Editor score

Visit site

Web Platform Tests7.1 Visit site

At a glance

Editor score
7.1 / 10
Pricing
Open source
Best for
Web-platform conformance and standards testing
Paid from
None
Facts checked
22 Sep 2026

Where it wins
- Open-source suite for cross-browser conformance testing
- Local serving, automated runs, and JSON result reporting
- Rendering comparisons plus public wpt.live and wpt.fyi tools
Where it doesn't
- More specialized than a general browser-testing cloud
- Community-maintained rather than a commercial SaaS product
- Does not provide physical-device testing

Our verdict on Web Platform Tests

Web Platform Tests (WPT) is an open-source cross-browser test suite for the web-platform stack. It is designed for browser projects and web developers checking interoperability and conformance across implementations. The project supports web, Windows, macOS, and Linux, with local HTTP and HTTPS serving through wpt serve, command-line browser execution through wpt run, and a browser-based test runner. It is a strong fit for teams working directly with web standards rather than teams seeking a broad commercial testing service.

WPT’s testing workflow covers more than test execution. Its tools support automated result collection, JSON reporting, test linting, manifest generation, and reftest rendering comparison. Browser and WebDriver installation support helps connect the suite to supported browser workflows, while wpt.live provides public deployment. These capabilities make WPT useful for conformance checks, automated analysis, and investigating rendering differences across implementations. The platform’s breadth is concentrated in web-platform interoperability, so its value is highest when standards behavior matters more than general application-testing convenience.

The published project structure is free and open source, with no paid tier distinction. Public results are available through the wpt.fyi archive and dashboard, which adds a shared view of results collected from multiple browsers. WPT should be chosen by standards-focused engineering teams, browser contributors, and developers who want local control over test serving and execution. Teams looking for a commercial browser-testing cloud, broad SaaS workflows, or physical-device testing should consider a different category of tool.

Your product? Our editors can test Web Platform Tests in depth and publish a review, labelled as paid · from $99/mo →

Web Platform Tests pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on web-platform-tests.org

Web Platform Tests fact sheet

Free plan	Not verified
Paid from	None
Browser coverage	Both
Operating systems	Multiple
Concurrent sessions	Not verified
Real device testing	Not verified
Local testing	Yes
Automated testing	Yes
Visual comparison	Yes
Deployment	Self-hosted
Platforms	Web, Windows, macOS, Linux
Support	Community, Docs
Pricing	Open source
Website	web-platform-tests.org
Facts checked	22 Sep 2026

Alternatives to Web Platform Tests

See all Web Platform Tests alternatives →

Also Ranked In

Web Platform Tests is ranked in 2 of our directories.

#32Browser Testing Software37 tools ranked

Used Web Platform Tests? Be the first to review it

The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Web Platform Tests for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

Write a reviewTwo minutes · verified accounts only · read by an editor before it appears

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Title

Your review

0 characters · at least 80, up to 3,000

Pros (optional · one per line)

Cons (optional · one per line)

Your name (shown with your review)

Role (optional)

Company (optional)

How long have you used it?

I've used Web Platform Tests myself and this is my honest opinion — nobody paid or asked me to write it.

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

Web Platform Tests is listed in our Cross-Browser Testing Software directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/web-platform-tests/"><img src="https://www.itechguides.com/best/badge/web-platform-tests.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Guides on Cross-Browser testing software

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.

Last updated 7 Oct 2026 · How we research and update