TOOLS2030 / CATEGORIES
Developer Tools
Practical utilities for JSON, Base64, URLs, UUIDs, colours and random data.
When you are debugging an API response, preparing data for a URL, or need a fresh identifier, these tools handle the small jobs that slow down development. Start with JSON Formatter to validate and beautify JSON, Base64 Encoder/Decoder to encode or decode data, or UUID Generator for secure version 4 identifiers.
Everything runs in your browser, so test data stays on your own machine while you format, encode or generate values. The Developer Guides section below explains how JSON, Base64 and URL encoding work, and when to use UUIDs and other random data.
JSON FormatterFormat, validate and beautify JSON.Base64 Encoder/DecoderEncode or decode Base64 data.URL Encoder/DecoderEncode and decode URL components.UUID GeneratorGenerate secure UUID v4 identifiers.Random Number GeneratorGenerate numbers inside a chosen range.Color ConverterConvert HEX, RGB and HSL values.
Developer Guides
JSON, Base64 and URL encoding explained · UUID and random data guide