💻 Developer Tools
16 free tools — no signup, no paid tier
Fast browser-based developer utilities for common coding tasks: format JSON, validate data, decode JWT tokens, generate UUIDs, hash text, test regex patterns, convert timestamps and clean up technical workflows.
JWT Decoder
Decode and inspect JWT tokens.
Cron Expression Generator
Build and explain cron expressions.
Number Base Converter
Convert between binary, octal, decimal, hex.
IP Address Lookup
Get geolocation and info for any IP.
HEX to RGB Converter
Convert HEX colors to RGB, HSL.
UUID Generator
Generate RFC 4122 UUIDs instantly.
Hash Generator
MD5, SHA-1, SHA-256, SHA-512 hash.
JSON to CSV Converter
Convert JSON arrays to CSV.
CSV to JSON Converter
Convert CSV files to JSON format.
JSON Validator
Validate and format JSON.
Regex Tester
Test regular expressions with live highlighting.
HTML Minifier
Minify HTML by removing whitespace.
CSS Minifier
Minify CSS code for production.
JavaScript Minifier
Minify JavaScript code.
Random String Generator
Generate random strings.
Unix Timestamp Converter
Convert Unix timestamps to human dates.
Free developer tools for quick coding tasks
These browser utilities help with small but frequent development tasks: formatting, validation, encoding, hashing, token decoding and timestamp conversion.
Popular developer workflows
- JSON Formatter for readable API responses and config files.
- JSON Validator to catch syntax issues quickly.
- JWT Decoder to inspect token payloads.
- UUID Generator for test IDs and development workflows.
- Regex Tester for testing patterns.
Related developer guides
- How to format and validate JSON online
- How to encode and decode Base64 online
- How to decode JWT tokens online
- How to generate UUIDs online
- How to test regex online
- How to convert Unix timestamps online
- How to generate hashes online
Developer tools FAQ
Do these tools require signup?
No. They are free browser tools for quick technical tasks.
Can I use them for sensitive secrets?
Avoid pasting private keys, production tokens or sensitive secrets into any online tool.