Generate regex patterns by inputting an example of the text.
Best Tools For Web
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A free online ADA and WCAG compliance checker.

Explore a practice test site that has 25 real bugs planted inside.
Web performance report every week in your inbox.

Easy web performance trace sharing

Makes JSON easy to read. Open source.
Cyrilex is a regular expression tester and visualizer
Analyze HTML size and catch bloat like inline images, large React hydration state, or code duplication.
A GitHub Action that lets you automatically run tests against WebPageTest on code changes.

one-stop resource with tons of little utilities for formatting, editing, generating, minifying, and so on.

A web performance tool providing deep diagnostic information about how a page performs under a variety of conditions.

Check compliance with WCAG 2.0 minimum contrast

A repository of Test Cases and Scenarios
An open-source web accessibility checker
Make your website smaller and faster by minifying the JS & CSS code!

A free online collaborative whiteboard app