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
SEO Speed Test▲513
Google & ChatGPT ignore slow pages, check if yours is fast!
2025 · seospeedtest.com · its alternatives →
2
Yellow Lab Tools▲9
Test your website: Performance, HTML, CSS and JS
2015 · yellowlab.tools · its alternatives →
3
SpeedVitals▲829
Hi HN, I’m Kashish, one of the co-founders of SpeedVitals, a platform for testing & monitoring website performance with a major emphasis on Core Web Vitals. Until now, our platform has only focused on Synthetic/Lab testing, such as Lighthouse tests and TTFB tests. But now, we have developed a Real-User Monitoring platform that doubles up as a Web Analytics tool. One major feature we have that most RUM tools lack is Performance Audits. Just like Lighthouse audits work on Lab test data, our audits work across all the real-user visits and gives suggestions on what task to prioritize first.…
2023 · speedvitals.com · its alternatives →
4
Free Monitoring Suite by WebGazer▲338
Monitoring for websites, APIs, and cron jobs
2024 · webgazer.io · its alternatives →
5AW
A website speed test tool to compare uBlock Origin with plain Chrome▲192
2019 · webtest.app · its alternatives →
6
Free SEO Checker by Spotibo▲165
An SEO checker that analyses based on Google's algorithm 👀
2018 · spotibo.com · its alternatives →
7
Simple SEO Tool▲111
Chrome Extension that simplifies SEO on-page analysis
2024 · seoextension.info · its alternatives →
8
DebugBear Website Speed Test▲81
Test page speed and get recommendations to improve load time
2023 · debugbear.com · its alternatives →
9
PageVitals▲76
Keeps your website fast, page speed monitoring and CrUX
2023 · pagevitals.com · its alternatives →
10
SpeedMonitor▲10
Automate your website's page speed testing for free!
2019 · speedmonitor.io · its alternatives →
11
Website Audit Kit▲6
Analyze and test your website. Cookie scan.
Dec 2025 · websiteauditkit.com · its alternatives →
12
Site Speed Chrome Extension▲70
Quickly test site speed and view observed Lighthouse data
2022 · chromewebstore.google.com · its alternatives →
13
Lightspeed▲19
Speed insights for websites
2024 · lightspeed.run · its alternatives →
14
Web Analyzer▲2
Free Website Analysis Tool to Check Website Page Performance
2020 · webanalyzer.io · its alternatives →
15
SpeedMeter▲5
Make Your Website Faster Today With a Chrome Extension.
2024 · its alternatives →
16
Free and real-time SEO audit tool▲8
Get immediate suggestions on technical SEO
2025 · its alternatives →
17
WebToolsLabs▲4
Free browser-based tools for PDFs, QR, code & more
Jul 2026 · webtoolslabs.com · its alternatives →
18
WebCheck Pro▲2
Free website speed & SEO analyzer
Jun 2026 · web-checkpro.vercel.app · its alternatives →
19
Cyfrow Pagespeed Analyzer▲4
Analyse website performance scores with pagespeed insights
Jun 2026 · play.google.com · its alternatives →
20
SEO Page Analyzer▲10
One-click X-ray vision for your website's SEO
2025 · chromewebstore.google.com · its alternatives →
21
Cool Web Tool▲6
Make your website LLM-Ready today with fast SEO audits.
2025 · coolwebtool.com · its alternatives →
22
PageSpeed Green▲7
Web Performance Monitoring service
2020 · its alternatives →
23
Website speed test▲5
Run a free website speed analysis to improve the performance
Jan 2026 · scaleflex.com · its alternatives →
24
SEO Competitor Analyzer▲7
Free tool to analyze competitor SEO performance
Mar 2026 · itsnipun.com · its alternatives →

Also compare

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 →