Developer Toolbox

Formatters, encoders and generators you reach for every day while building and debugging.

Debugging an API response at 2am, pasting a token into a config file, or checking why a query string breaks in production — these are small jobs that interrupt real work. The Developer Toolbox gathers the utilities that make those jobs take seconds instead of minutes.

Every tool here runs in your browser, so payloads, secrets and snippets you paste are never sent to our servers. That makes them safe to use with staging data and internal code.

17 tools in this collection

Developer Tools

JSON Formatter

Format, validate and make JSON easier to read.

Developer Tools

HTML Formatter

Format and beautify HTML code to make it easier to read and work with.

Developer Tools

URL Encoder

Encode and decode URLs quickly and safely.

Developer Tools

QR Code Generator

Create QR codes from text, URLs and other information instantly.

Developer Tools

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 strings quickly in your browser.

Developer Tools

Strong Password Generator

Generate secure random passwords with customizable length and character types.

Case Converter

Convert text to UPPERCASE, lowercase, Title Case, Sentence case and more.

Text Compare (Diff Checker)

Compare two texts and highlight every added, removed and changed line.

UUID Generator

Generate random v4 or time-ordered v7 UUIDs, one or thousands at a time.

Developer Tools New

Unix Timestamp Converter

Convert Unix timestamps to readable dates and back, in UTC or local time.

Developer Tools New

XML Formatter

Beautify, validate and minify XML with clear error messages.

Developer Tools New

CSS Formatter & Minifier

Beautify messy CSS or minify it for production.

Developer Tools New

JavaScript Formatter

Beautify minified or messy JavaScript and JSON-like code.

Developer Tools New

SQL Formatter

Format and beautify SQL queries for MySQL, PostgreSQL, SQL Server and more.

Developer Tools New

Regex Tester

Test JavaScript regular expressions with live highlighting and groups.

Image Tools New

Favicon Generator

Create favicon.ico and app icons from an image, emoji or letters.

Lorem Ipsum Generator

Generate placeholder paragraphs, sentences or words for designs.