Web Performance And Core Web Vitals Monitoring | DebugBear

Discover where visitors have poor experiences, with real user analytics or our website scan.
Fix performance issues with detailed technical reporting.
Confirm your optimizations are working and get alerted if performance gets worse.
Run scheduled lab tests and keep track of Google Lighthouse scores.
Track actual user experience across your website in real time.
Monitor visitor data from Google's Chrome User Experience Report (CrUX).
Real user monitoring provides real-time insights into how fast your website is and where you need to optimize.
Continuously run synthetic tests for deeper insights and alerting.
Set up reports that provide the metrics and debug data that matter to each team in your organization.
Learn how your website loads for visitors and how that impacts your Core Web Vitals scores.
DebugBear automatically identifies problems on your website and highlights the data you need to fix them.
See the impact of performance optimizations without deploying changes to your website.
Get a detailed report on what's happening on your website. Easily correlate network activity with CPU tasks and rendering progress.
When inspecting a performance metric you get a filtered view of the test result highlighting what is impacting the specific metric.
INP is one of the Core Web Vitals metrics that impact SEO. It measures how quickly your website responds to user input.
DebugBear tracks how often different page elements cause slow interactions. You can also see what led up to the user interaction.
View what specific code is delaying user input, and why this code is running.
Added a new render-blocking script? Uploaded a 5 MB image? Got a slow server response?
Use our zero-config automatic alerts, or set custom thresholds.
Want to know why your site got slower? Use our in-depth before and after comparison to see exactly what changed.
Demonstrate how visitors experience your website. Generate a side-by-side view with a competitor. Or share a before and after video showing the impact of your work.
Deployed a new version or added a new third-party? Mark this in your charts to clearly see the performance impact.
Share test results with a unique link or by exporting data as PDF or CSV. Invite team members and clients to collaborate.
Compare your website performance to the competition based on real visitor data by Google.
Monitor progress over time and see if you're pulling ahead.
Explore desktop and mobile data and check additional metrics beyond the Core Web Vitals.
See all Lighthouse audit scores and identify the most common issues on your website in the audits dashboard. Check performance, accessibility, and SEO.
Generate ready-to-use prompts for AI coding agents like Claude Code or Cursor. Get specific, actionable fix instructions based on your test results.
Our API allows you to trigger synthetic tests, access real user monitoring data, or receive webhook alerts when tests finish.
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