Developer Tools
9 toolsUse fast client-side utilities for daily development work: format JSON, encode Base64, generate QR codes, and create strong passwords without account friction.
Tools
Free developer tools that run in your browser
JSON Formatter
Validate, format, and minify JSON with readable errors.
Base64 Tool
Encode and decode text with Base64, instantly.
QR Code Generator
Create a QR code from any text or URL, then download a PNG.
Password Generator
Create strong, random passwords in one click.
URL Encoder/Decoder
Encode or decode URL components instantly.
JWT Decoder
Decode and inspect JWT token header, payload, and expiration.
Hash Generator
Generate SHA-256, SHA-384, SHA-512, and SHA-1 hashes.
UUID Generator
Generate random UUID v4 strings, one or many at a time.
Regex Tester
Test regular expressions against text with live match highlighting.
Benefits
Why use these developer tools
Debug data and generate assets without opening heavy apps.
Keep snippets and secrets local while using browser-native processing.
Move faster during API, frontend, QA, and documentation work.
Use cases
Common workflows
Format API responses during debugging.
Generate QR codes for URLs, test pages, and campaigns.
Create strong local passwords for temporary credentials.
Related categories
Explore connected tool categories
FAQ
Developer Tools questions
Are developer inputs stored?
No. Inputs are processed in the browser and are not stored by MultiTool Panda.
Can JSON errors be detected?
Yes. The JSON Formatter reports readable parse errors for invalid JSON.
Is the password generator random?
It uses the browser Web Crypto API for stronger randomness than Math.random.