v1.0 — measure anything that runs in a browser

Benchmark the real performance of any web application.

Pulse captures Web Vitals, network calls, resource loads, long tasks and JS errors from your users' actual sessions — including logged-in flows. Drop in a one-line snippet, watch your dashboard fill up.

install.html

<!-- paste in <head> of your site -->
<script src="https://pulse.app/sdk.js"
        data-project-key="pk_live_xxxxxxxxxxxxx" async></script>

// captured automatically

Core Web Vitals

LCP, CLS, INP, FCP, TTFB measured the way Google ranks them.

Network timings

Every fetch and XHR — duration, status, size, like the DevTools Network tab.

Resources & rendering

Scripts, styles, images, fonts. Long tasks blocking the main thread.

Errors & console

Uncaught exceptions and unhandled rejections tied to the session.

Create a project

Drop the snippet

Paste a one-liner into your site's <head>. It's tiny and async.

Watch sessions stream

Every visit becomes a measurable session, broken down by metric.