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Browser Performance Tools

GATestingReleased Apr 2026All plansSource: docs.lovable.dev

Browser Performance Tools is Lovable's Testing feature: Profile Core Web Vitals, CPU, memory, and long tasks.

Extends Browser Testing with performance profiling: Core Web Vitals (LCP/CLS/INP), CPU usage, long tasks, and memory.

Capabilities

  • Core Web Vitals capture
  • CPU and long-task profiling
  • Memory inspection
  • Per-route performance baselines

Use cases

  • Catch a regression that tanks LCP
  • Investigate a memory leak in a dashboard
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Frequently asked

  • What is Browser Performance Tools?

    Browser Performance Tools is Lovable's Testing feature: Profile Core Web Vitals, CPU, memory, and long tasks. Extends Browser Testing with performance profiling: Core Web Vitals (LCP/CLS/INP), CPU usage, long tasks, and memory.

  • Is Browser Performance Tools GA or in beta?

    Browser Performance Tools is generally available (GA) on Lovable.

  • What Lovable plan includes Browser Performance Tools?

    Browser Performance Tools is available on all Lovable plans.

  • When did Browser Performance Tools launch?

    Browser Performance Tools launched on Apr 2, 2026.

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