DebugBear
Test website speed and Core Web Vitals, then review suggestions for improving page performance.
About DebugBear
DebugBear lets users enter a website URL to test page speed and Core Web Vitals. Results show loaded resources, step-by-step loading, third-party code impact, a Lighthouse report, and recommendations covering over 25 common issues.
The free test offers mobile and desktop options from US East. Testing from 30+ locations, testing pages that require authentication, setting performance budgets, and ongoing monitoring require sign-up.
Key features
- Test page speed and Core Web Vitals by URL
- Mobile and desktop tests with Lighthouse report included
- Breakdown of Largest Contentful Paint and load waterfall
- Detection of 25+ common performance issues with fix data
- Historical comparison of metrics and test results over time
- Competitor and industry benchmarking using same speed test
Best for: Site owners and teams who need to check page speed, Core Web Vitals, and specific fixes.
Good for
- Includes Lighthouse report alongside its own performance checks
- Shows lab results with Google real-user CrUX data
- Identifies image, HTML, CSS, and third-party issues with supporting data
Watch out for
- Free test limited to US East; 30+ locations require sign-up
- Continuous monitoring and authenticated-page testing require sign-up
DebugBear at a glance
- Category
- Marketing & SEO › SEO & Web Analytics
- Type
- Website
- Pricing
- Free trial
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for SEO & Web Analytics
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DebugBear FAQ
Can I test from locations outside US East?
The free test lists Mobile + US East and Desktop + US East. Sign-up is needed to test from 30+ locations.
Does the test include real-user data?
Yes, the test includes Google data to show speed for real users.
Can I test competitor sites?
Yes, the free page speed test can check your website and those of competitors.
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