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Ardent Labs
Performance & DiagnosticsIn Development

See What's Happening Under the Hood.

Inspect useful browser performance metrics and resource timing information in one place.

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This extension is currently in development. An installation link will appear here once the Chrome Web Store listing is live.

app.example.dev/dashboard
DOM Content412 ms
Load1.24 s
Requests38
Navigation timing
Redirect
4 ms
DNS
12 ms
Connect
28 ms
Request
46 ms
Response
118 ms
Render
164 ms
ResourceTimeSize
app.bundle.js
214 ms182 KB
styles.css
96 ms24 KB
hero.avif
148 ms88 KB
api/session
62 ms3 KB
Illustration of the Browser Performance Analyzer interface showing navigation timing phases and a resource loading breakdown.
Overview

The problem it solves

Browser Performance Analyzer surfaces the performance signals a browser already records — navigation timing, resource loading, and performance entries — in a layout that is easier to scan than a raw timeline. It is not a replacement for a full profiling suite, and it does not claim to find every bottleneck automatically. What it does is put the numbers in front of you quickly, so you can decide where to look next.

Read the signals your page emits — built to fit into an existing debugging workflow rather than replace it.

Capabilities

What it does

Feature areas reflect the extension's intended scope. Individual capabilities are refined as the tool develops.

  • Navigation timing

    Review the phases of a page load, from initial request through to a rendered document.

  • Resource loading overview

    See which resources a page requested and how long each one took to arrive.

  • Performance entries

    Browse the entries the browser exposes so you can compare them side by side.

  • Sort by what matters

    Order results by duration or size to bring the heaviest items to the top.

  • Narrow the noise

    Filter entries by type so scripts, stylesheets, and images can be reviewed separately.

  • Copy for your notes

    Copy a metric or entry so you can paste it into a bug report or a pull request.

How It Helps

Realistic developer scenarios

These are the kinds of situations the extension is designed around — not guarantees about what it will find.

Investigating a slow first paint

Compare navigation timing phases to see whether time is going into the network, the server response, or rendering before you start changing code.

Finding an unexpectedly heavy asset

Sort resource entries by duration to identify which request is holding up the rest of the page.

Comparing two builds

Capture the same set of metrics before and after a change to see whether the numbers moved in the direction you expected.

Privacy

How your data is handled

Performance data is read from the page you are inspecting and presented locally. The extension is designed to work without an account and without uploading your metrics.

  • Timing and resource data come from the browser's own performance APIs.
  • Metrics are displayed in the extension UI rather than transmitted to a server.
  • No analytics or profiling data is collected about your browsing activity.
  • Any future change to data handling will be documented on this page before release.
Read the full privacy policy
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Follow Browser Performance Analyzer

This extension is still being built. Explore the rest of the catalog in the meantime, or get in touch with questions.

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