Alternatives to WebPageTest
An online website performance tester with waterfall charts, filmstrips, multiple locations and throttled connections. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
WebPageTest
An online website performance tester with waterfall charts, filmstrips, multiple locations and throttled connections.
Replacements
Listings that take over the same core job as WebPageTest.
GTmetrix
An online page speed tester with waterfall charts, Core Web Vitals, scheduled monitoring and alerts.
GTmetrix offers waterfalls and Core Web Vitals from 25 regions plus scheduled monitoring and an API, with many options requiring an account or paid plan.
DebugBear
A web performance testing and monitoring service with a free Core Web Vitals speed test.
DebugBear pairs lab tests and filmstrips with real-user Core Web Vitals, but free tests use limited locations and monitoring is paid.
Uptrends Website Speed Test
A free online website speed test with waterfall reports, Core Web Vitals and filmstrip screenshots.
Uptrends Website Speed Test gives waterfall, filmstrip and Core Web Vitals with a choice of Chrome or Edge, while continuous monitoring requires a paid plan.
PageSpeed Insights
Google's free web tool that reports Core Web Vitals and Lighthouse results for any URL.
PageSpeed Insights is Google's free tool showing field and lab Core Web Vitals with Lighthouse suggestions, but no request waterfall or filmstrip.
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 is free with a full waterfall from 10 locations, one location per run and fewer metrics overall.
Pingdom Tools
A free online website speed test that reports load time, page size and request count.
Pingdom Tools is a free, simpler test reporting a grade, load time, page size and request count from several regions.
Yellow Lab Tools
An open-source tool that audits a webpage for performance and front-end code quality issues.
Yellow Lab Tools is open source under GPL-2.0 and self-hostable, focusing on page weight and front-end code quality rather than connection throttling.
GiftOfSpeed
A free website speed test and Lighthouse-based speed and uptime monitoring service.
GiftOfSpeed provides free Lighthouse-based speed reports on simulated devices and adds uptime and slowness alerts with an account.
Also worth comparing
These listings name WebPageTest as their own alternative, so the relationship runs both ways.
ByteCheck
A free online checker that measures a website's Time To First Byte.
WebPageTest measures full page loads with waterfalls, filmstrips and throttled connections from multiple locations, with some features on paid plans.
Experte Page Speed Test
A free bulk page speed test that runs PageSpeed Insights metrics across many URLs at once.
WebPageTest gives a detailed request waterfall and filmstrip for one page with throttled connections and multiple locations, though its output assumes some performance knowledge.
Request Map Generator
A web tool that draws a node map of every request a page makes, including third parties.
WebPageTest shows every request in a detailed waterfall with filmstrips and throttling, rather than a visual node map of third-party domains.
Treo
A web dashboard for tracking Core Web Vitals across sites using Chrome UX Report and Lighthouse data.
WebPageTest gives detailed request waterfalls and filmstrips from multiple locations with throttled connections, focusing on deep single-test diagnosis rather than dashboard tracking.
Treo Site Speed
A free web report showing real-user Core Web Vitals and historical speed trends for any domain.
WebPageTest runs synthetic tests with waterfalls, filmstrips and throttled connections, suited to diagnosing why a page is slow rather than tracking real users over time.
Similar software
Related functionality, not a direct replacement.
KeyCDN Performance Test
A free web tool that measures DNS, connection, TLS and TTFB times for one URL from 10 locations.
