Alternatives to GTmetrix
An online page speed tester with waterfall charts, Core Web Vitals, scheduled monitoring and alerts. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
GTmetrix
An online page speed tester with waterfall charts, Core Web Vitals, scheduled monitoring and alerts.
Replacements
Listings that take over the same core job as GTmetrix.
PageSpeed Insights
Google's free web tool that reports Core Web Vitals and Lighthouse results for any URL.
PageSpeed Insights is free with no account and shows Chrome field data beside Lighthouse lab results, but runs single-page checks without scheduled monitoring or alerts.
WebPageTest
An online website performance tester with waterfall charts, filmstrips, multiple locations and throttled connections.
WebPageTest offers a detailed request waterfall and filmstrip with throttled connection profiles from several locations, with output that assumes some performance knowledge.
DebugBear
A web performance testing and monitoring service with a free Core Web Vitals speed test.
DebugBear pairs lab tests with real-user Core Web Vitals and shows third-party code impact, though its free test runs from limited locations and monitoring is paid.
Pingdom Tools
A free online website speed test that reports load time, page size and request count.
Pingdom Tools gives a simple grade with page size and request count from several regions for free, but only as single on-demand tests without monitoring.
Uptrends Website Speed Test
A free online website speed test with waterfall reports, Core Web Vitals and filmstrip screenshots.
Uptrends Website Speed Test lets you choose Chrome or Edge and adds filmstrip screenshots and third-party timings, with continuous monitoring on a paid Uptrends plan.
GiftOfSpeed
A free website speed test and Lighthouse-based speed and uptime monitoring service.
GiftOfSpeed is free and pairs Lighthouse-based speed reports on over 100 simulated devices with uptime and slowness alerts, with monitoring requiring an account.
KeyCDN Website Speed Test
A free full-page speed test with a waterfall breakdown, run from one of 10 global locations.
KeyCDN Website Speed Test gives a free full-page waterfall from one of 10 locations per run, with fewer metrics and no scheduled monitoring.
Pingdom
A hosted website monitoring service with uptime, page speed, transaction checks and real user monitoring.
Pingdom is a paid SolarWinds service adding uptime, transaction checks and real user monitoring to page speed monitoring, with no free plan beyond the trial.
Also worth comparing
These listings name GTmetrix as their own alternative, so the relationship runs both ways.
ByteCheck
A free online checker that measures a website's Time To First Byte.
GTmetrix gives full page reports with waterfalls and Core Web Vitals from 25 regions, with many options requiring an account or paid plan.
Experte Page Speed Test
A free bulk page speed test that runs PageSpeed Insights metrics across many URLs at once.
GTmetrix tests one page at a time with waterfall charts from 25 regions and adds scheduled monitoring and alerts, with many options requiring an account or paid plan.
sitespeed.io
An open-source tool for measuring, analysing and monitoring the performance of web pages.
GTmetrix is a hosted freemium tester with 25 test regions, scheduled monitoring and alerts, replacing self-run infrastructure with an account and paid options.
SpeedCurve
Hosted web performance monitoring service combining synthetic tests with real user monitoring.
GTmetrix offers freemium speed reports with scheduled monitoring and alerts from 25 regions, but focuses on synthetic tests without real user monitoring.
Treo
A web dashboard for tracking Core Web Vitals across sites using Chrome UX Report and Lighthouse data.
GTmetrix runs lab tests from 25 regions with waterfall charts and scheduled monitoring with alerts, rather than relying on Chrome UX Report field data.
Treo Site Speed
A free web report showing real-user Core Web Vitals and historical speed trends for any domain.
GTmetrix measures pages through lab tests from 25 regions with waterfall charts and scheduled monitoring, rather than showing real visitor data from Chrome.
Yellow Lab Tools
An open-source tool that audits a webpage for performance and front-end code quality issues.
GTmetrix adds Core Web Vitals, 25 test regions, scheduled monitoring and an API, but is hosted only and many options need an account.
Similar software
Related functionality, not a direct replacement.
Request Map Generator
A web tool that draws a node map of every request a page makes, including third parties.
KeyCDN Performance Test
A free web tool that measures DNS, connection, TLS and TTFB times for one URL from 10 locations.
