Developer Tools
Free browser-based developer utilities for JSON, Base64, UUIDs, timestamps and URLs.
JSON Formatter & Validator
Format, minify and validate JSON directly in your browser.
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text.
UUID Generator
Generate secure UUID v4 values locally in your browser.
Unix Timestamp Converter
Convert Unix timestamps and human-readable dates.
URL Encoder & Decoder
Encode or decode URL components safely in your browser.
About these tools
ToolHyv keeps this category focused on utilities that are complete, understandable and useful. New tools are added when they solve a real task rather than simply increasing the page count.