Online test to help speeding up heavy web pages

Free and open source!

Choose the simulated device:
Desktop
Tablet
Phone
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Cookie
Cookie

Adds a cookie on the main domain.

Example: "bar=foo;domain=url"

Front-end quality

Audits quality problems in the HTML, CSS and JS

WebPerf

Checks if performance good practices are applied

JS Profiling

Untangles the JavaScript spaghetti code