Alternatives to DebugBear
A web performance testing and monitoring service with a free Core Web Vitals speed test. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
DebugBear
A web performance testing and monitoring service with a free Core Web Vitals speed test.
Replacements
Listings that take over the same core job as DebugBear.
WebPageTest
An online website performance tester with waterfall charts, filmstrips, multiple locations and throttled connections.
WebPageTest offers detailed waterfalls, filmstrips and throttled connections from multiple locations, with output that assumes performance knowledge and no real-user data.
GTmetrix
An online page speed tester with waterfall charts, Core Web Vitals, scheduled monitoring and alerts.
GTmetrix gives waterfall charts and Core Web Vitals from 25 regions with scheduled monitoring and a documented API, with many options behind an account or 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 data without an account, but checks single pages with no ongoing monitoring.
Treo
A web dashboard for tracking Core Web Vitals across sites using Chrome UX Report and Lighthouse data.
Treo tracks real-user Core Web Vitals from Chrome UX Report plus Lighthouse across many sites and sitemaps, without a step-by-step filmstrip load breakdown.
Uptrends Website Speed Test
A free online website speed test with waterfall reports, Core Web Vitals and filmstrip screenshots.
Uptrends Website Speed Test offers waterfall, filmstrip and Core Web Vitals with a choice of Chrome or Edge, but continuous monitoring needs a paid Uptrends plan.
Pingdom
A hosted website monitoring service with uptime, page speed, transaction checks and real user monitoring.
Pingdom is a paid service combining page speed monitoring with uptime, transaction checks and real user monitoring, aimed at business websites.
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, with fewer metrics and no Core Web Vitals monitoring.
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 GPL-2.0 and self-hostable, auditing front-end code quality as well as speed, though development has slowed.
Also worth comparing
These listings name DebugBear as their own alternative, so the relationship runs both ways.
Experte Page Speed Test
A free bulk page speed test that runs PageSpeed Insights metrics across many URLs at once.
DebugBear combines lab tests with real-user Core Web Vitals and a filmstrip breakdown per page, while continuous monitoring needs a paid plan.
GiftOfSpeed
A free website speed test and Lighthouse-based speed and uptime monitoring service.
DebugBear combines lab tests with real-user Core Web Vitals and shows the impact of third-party code, while continuous monitoring requires a paid plan.
Pingdom Tools
A free online website speed test that reports load time, page size and request count.
DebugBear combines a free lab test and filmstrip with real-user Core Web Vitals, though the free test uses a limited set of locations.
Request Map Generator
A web tool that draws a node map of every request a page makes, including third parties.
DebugBear shows the impact of third-party code within a full performance test and real-user Core Web Vitals, with monitoring on a paid plan.
Treo Site Speed
A free web report showing real-user Core Web Vitals and historical speed trends for any domain.
DebugBear pairs real-user Core Web Vitals with lab tests and a filmstrip breakdown, though its free test runs from limited locations and monitoring is paid.
Similar software
Related functionality, not a direct replacement.
ByteCheck
A free online checker that measures a website's Time To First Byte.
