Dev tools · alternatives · 2026

24 alternatives to Yellow Lab Tools

Free online test to help speeding up web pages

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Yellow Lab Tools launched in 2021; newer entries below may have overtaken it.

1. 1
   SEO Speed Test▲516

   Google & ChatGPT ignore slow pages, check if yours is fast!

   2025 · seospeedtest.com · its alternatives →

2. 2
   Yellow Lab Tools▲9

   Test your website: Performance, HTML, CSS and JS

   2015 · its alternatives →

3. 3
   Free Monitoring Suite by WebGazer▲338

   Monitoring for websites, APIs, and cron jobs

   2024 · webgazer.io · its alternatives →

4. 4AW
   A website speed test tool to compare uBlock Origin with plain Chrome▲192

   2019 · webtest.app · its alternatives →

5. 5
   Free SEO Checker by Spotibo▲165

   An SEO checker that analyses based on Google's algorithm 👀

   2018 · its alternatives →

6. 6
   Simple SEO Tool▲111

   Chrome Extension that simplifies SEO on-page analysis

   2024 · seoextension.info · its alternatives →

7. 7IB
   I built an internet speed analytics tool▲89

   2021 · ronaldlangeveld.com · its alternatives →

8. 8
   DebugBear Website Speed Test▲81

   Test page speed and get recommendations to improve load time

   2023 · debugbear.com · its alternatives →

9. 9
   PageVitals▲76

   Keeps your website fast, page speed monitoring and CrUX

   2023 · pagevitals.com · its alternatives →

10. 10
    SpeedMonitor▲10

    Automate your website's page speed testing for free!

    2019 · its alternatives →

11. 11
    Website Audit Kit▲6

    Analyze and test your website. Cookie scan.

    Dec 2025 · websiteauditkit.com · its alternatives →

12. 12
    Site Speed Chrome Extension▲70

    Quickly test site speed and view observed Lighthouse data

    2022 · chromewebstore.google.com · its alternatives →

13. 13
    Lightspeed▲19

    Speed insights for websites

    2024 · lightspeed.run · its alternatives →

14. 14
    Web Analyzer▲2

    Free Website Analysis Tool to Check Website Page Performance

    2020 · its alternatives →

15. 15
    SpeedMeter▲5

    Make Your Website Faster Today With a Chrome Extension.

    2024 · its alternatives →

16. 16
    Free and real-time SEO audit tool▲8

    Get immediate suggestions on technical SEO

    2025 · its alternatives →

17. 17
    WebToolsLabs▲4

    Free browser-based tools for PDFs, QR, code & more

    Jul 2026 · webtoolslabs.com · its alternatives →

18. 18
    WebCheck Pro▲2

    Free website speed & SEO analyzer

    Jun 2026 · web-checkpro.vercel.app · its alternatives →

19. 19
    Cyfrow Pagespeed Analyzer▲4

    Analyse website performance scores with pagespeed insights

    Jun 2026 · play.google.com · its alternatives →

20. 20
    SEO Page Analyzer▲10

    One-click X-ray vision for your website's SEO

    2025 · chromewebstore.google.com · its alternatives →

21. 21
    PageSpeed Green▲7

    Web Performance Monitoring service

    2020 · its alternatives →

22. 22
    Website speed test▲5

    Run a free website speed analysis to improve the performance

    Jan 2026 · scaleflex.com · its alternatives →

23. 23
    SEO Competitor Analyzer▲7

    Free tool to analyze competitor SEO performance

    Mar 2026 · itsnipun.com · its alternatives →

24. 24
    Internet Speed Test Tool▲5

    speed test, internet speed test tool, speed test internet

    2020 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →