JSON Formatter & Validator
Validate JSON and format it for reading or compact transfer.
Developer10 free tools
Developer tools
Format data, test expressions, and generate useful building blocks.
Showing 10 tools
Base64 Encoder / Decoder
Encode Unicode text as Base64 and decode it back.
DeveloperPassword Generator
Generate random passwords with the browser’s cryptographic API.
DeveloperQR Code Generator
Create a downloadable QR code from text or a URL.
DeveloperUUID Generator
Generate cryptographically random version 4 identifiers.
DeveloperRegex Tester
Test JavaScript regular expressions in an isolated worker.
DeveloperJWT Decoder
Read a JWT header and payload without verifying its signature.
DeveloperCSV to JSON Converter
Convert header-based CSV into a JSON array of objects.
DeveloperJSON to CSV Converter
Export a flat JSON array as properly quoted CSV.
DeveloperUnix Timestamp Converter
Convert between Unix seconds, milliseconds, and an ISO date.
DeveloperNo tools found
Try a shorter search or browse another category.