⚡ Professional Developer & Debugging Suite

13 free tools · no sign-up

Pick a tool — most of these run in your browser.

Format & inspect

Pretty-print, compare, and test code in the browser.

{ }
JSON Formatter
Format, validate & beautify JSON
⭐ Popular
⇔
Text Compare
Compare text or JSON side-by-side with highlighted diffs
⭐ Popular
📝
Markdown Editor
Write and preview Markdown live
🔍
Regex Tester
Test and debug regular expressions

Compress & encode

Minify assets and encode strings without leaving the page.

⚡
HTML/CSS/JS Minifier
Minify code to reduce file size
🔐
Base64 Encoder
Encode and decode Base64 text
🔗
URL Encoder / Decoder
Encode or decode URL strings

Generate

Create passwords, IDs, QR codes, and a temporary inbox.

🔑
Password Generator
Generate strong, secure passwords
⭐ Popular
📧
Temp Mail
Free temporary and disposable email inbox
⭐ Popular
🆔
UUID Generator
Generate unique UUID/GUID values
⬜
QR Code Generator
Generate QR codes for URLs or text

More developer tools

📷
QR Code Scanner
Scan a QR code from a photo or your camera
▮
Barcode Scanner
Scan a 1D barcode from a photo or camera

Lightweight browser-based utilities to format code, validate syntax, test regular expressions, and generate secure tokens. Most tools run in your browser without uploading your input.

JSON Formatter & Validator

Inspect, clean, and format nested JSON with auto-indentation and real-time syntax error highlighting.

HTML, CSS & JavaScript Minifier

Compress client-side assets to reduce file size for testing and handoff. Processing stays in the browser.

Regex Tester & Debugger

Build and evaluate regular expressions with live match highlighting and capture groups.

Base64 & URL Encoder

Encode and decode strings and URL parameters for web workflows. Text-based tools run locally in the browser.