Developer Tools

Formatters, minifiers, encoders, hashes and testers for everyday web work. Code and payloads you paste stay in your browser.

20 free tools in this category.

• Website Speed Check

  Time how fast a page responds from your browser.

• IP Finder

  See your public IP and connection details.

• Password Generator

  Create strong random passwords instantly.

• Markdown Previewer

  Write markdown and see it rendered live.

• URL Shortener

  Trim long links into tidy short ones.

• Diff Checker

  Compare two texts line by line.

• HTML Editor

  Write HTML and preview it side by side.

• JSON Formatter

  Beautify, minify and validate JSON.

• CSS Minifier

  Strip spaces and comments from CSS.

• JS Minifier

  Squeeze whitespace out of JavaScript.

• HTML Minifier

  Compact HTML markup for faster loads.

• Base64 Encoder

  Encode and decode Base64 text.

• URL Encoder

  Percent-encode or decode URL text.

• JWT Decoder

  Read the header and payload of a token.

• UUID Generator

  Generate unique IDs in bulk.

• Hash Generator

  SHA-1, SHA-256 and SHA-512 hashes.

• Regex Tester

  Test a pattern against sample text live.

• Color Converter

  Convert HEX, RGB and HSL colours.

• Gradient Generator

  Design CSS gradients and copy the code.

• Box Shadow Generator

  Tune a CSS shadow with live preview.