Alternatives · Technical SEO
Yellow Lab Tools alternatives
As of Oct 24, 2026, the best Yellow Lab Tools alternative for most people is PageSpeed Insights (3.2 GPA), third in our ranking of technical SEO tools. It's also the best free one.
Yellow Lab Tools compared with 5 alternatives: WebPageTest, GTmetrix, PageSpeed Insights, sitespeed.io and Lighthouse.
Yellow Lab Tools is free to use. All 5 alternatives are free or have a free plan.
Listings checked up to Oct 23, 2026 · Where the facts come from
At a glance
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| Yellow Lab ToolsThis tool | Free | Free | Web, macOS, Linux |
| WebPageTest | Free plan · from $180/yr | Yes | Web |
| GTmetrix | Free plan · from $4.99/mo | Yes | Web |
| PageSpeed Insights | Free | Free | Web |
| sitespeed.io | Free | Free | macOS, Windows, Linux |
| Lighthouse | Free | Free | Web, Browser extension |
Price against what you get
Yellow Lab Tools has no paid plan and scores 2.7 out of 4 on features, ease of use and platforms. None of the 5 alternatives on this chart both scores higher and starts lower.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
How each one differs from Yellow Lab Tools
WebPageTest
Page speed tests from real browsers in locations around the world
- WebPageTest starts at $180 per year for 1,000 test runs a month ($18.75 billed monthly).
- WebPageTest lists no macOS and Linux apps, which Yellow Lab Tools has.
- WebPageTest also covers dashboards.
Suits: Developers digging into exactly how a page loads
GTmetrix
Page speed testing with Lighthouse reports, monitoring and an API
- GTmetrix starts at $4.99 per month, billed yearly ($5.99 billed monthly).
- GTmetrix lists no macOS and Linux apps, which Yellow Lab Tools has.
Suits: Checking why a single page loads slowly
PageSpeed Insights
Free Google speed test with real-user Core Web Vitals and Lighthouse
- PageSpeed Insights is free.
- PageSpeed Insights lists no macOS and Linux apps, which Yellow Lab Tools has.
Suits: Checking one page's Core Web Vitals the way Google measures them
sitespeed.io
Free open-source toolkit for testing and monitoring web performance
- sitespeed.io is free.
- sitespeed.io also lists a Windows app.
- sitespeed.io lists no web app, which Yellow Lab Tools has.
Suits: Developers who want full control of synthetic performance tests at no license cost
Lighthouse
Google's open-source audit of page speed, accessibility and SEO
- Lighthouse is free.
- Lighthouse also lists a browser extension.
- Lighthouse lists no macOS and Linux apps, which Yellow Lab Tools has.
- Lighthouse also covers site audit.
Suits: Web developers fixing speed and accessibility problems on a page
Limits worth knowing in Yellow Lab Tools
- Each run tests one page address; the documentation describes no site-wide crawl or scheduled monitoring.
- The public instance queues runs and processes one at a time, so a test can wait behind others.
- Self-hosting needs Node.js and is documented for Linux and macOS; the author says Windows is untested.
- Under the GPL-2.0 license, changes to the code of a hosted copy must be published under the same license.
Common questions
What are the alternatives to Yellow Lab Tools?
The alternatives to Yellow Lab Tools in this directory are WebPageTest, GTmetrix, PageSpeed Insights, sitespeed.io and Lighthouse. Each one has a side-by-side comparison with Yellow Lab Tools.
Is there a free alternative to Yellow Lab Tools?
Yes. PageSpeed Insights, sitespeed.io and Lighthouse are free to use. WebPageTest and GTmetrix have a free plan alongside paid ones.
Which Yellow Lab Tools alternatives work on Windows?
The Yellow Lab Tools listing does not include a Windows app. sitespeed.io lists one.
When were these prices checked?
Every listing on this page was checked on Oct 23, 2026, against the pages it cites. Vendors change prices without notice, so confirm on their site before you buy.