Analyze webpack production bundle

Cyrilex is a regular expression tester and visualizer

Browser templates for Browser In The Browser (BITB) attack.

Analyze HTML size and catch bloat like inline images, large React hydration state, or code duplication.

Supports editing text and images in a PDF across all platforms.

A GitHub Action that lets you automatically run tests against WebPageTest on code changes.

A beautiful JSON explorer packed with features

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

online JSON formatting and processing tool with powerful functions

Aggregated set of useful tools that every developer and tester may need once in a while.

Make your website smaller and faster by minifying the JS & CSS code!

A free online collaborative whiteboard app

This simple yet effective tool helps you compare two texts, and reveals the similarities and differences.

Curated lists of tools, tips and resources for protecting digital security and privacy

🎨 Regex visualizer & editor

Visualize your JSON into interactive graphs.

Online tool to see visualizations of SQL queries.

A curated list of useful regular expressions for different programming languages.

Enter a URL and this tool will tell you if the website is violating GDPR laws.

An online tool to help you easily generate, test, and refine your regular expressions.

Unit Testing, Coverage Criteria and Design for Testability.

Learn how to catch bugs and break software as you discover different testing methods that will help you build better software.

DenyHosts is a script intended to be run by Linux system administrators to help thwart SSH server attacks (also known as dictionary based attacks and brute force attacks).