◈ Developer Toolkit
Developer Tools Hub
9 essential utilities for developers and QA engineers — all free, all instant, no sign-up required.
JSON Comparator
Deep-diff two JSON objects. Detect mismatches, missing keys, and extra fields with filterable results.
◈ Compare
JSON Formatter
Beautify or minify JSON. Validate syntax, highlight errors, and copy clean output instantly.
◈ Format
Base64 Encoder / Decoder
Encode any text or URL to Base64 and decode it back. Supports URL-safe mode.
◈ Encode
JWT Decoder
Decode and inspect JWT tokens — header, payload, expiry, and claims at a glance.
◈ Security
UUID Generator
Generate v4 UUIDs in bulk. Copy individually or all at once for test data seeding.
◈ Generate
Regex Tester
Test regular expressions live against custom input. See highlighted matches and capture groups.
◈ Test
URL Encoder / Decoder
Encode special characters in URLs and decode them back. Handles query strings correctly.
◈ Encode
Color Converter
Convert colours between HEX, RGB, HSL, and RGBA with live preview and swatch palette.
◈ Convert
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Shows UTC and local time.
◈ Convert
🔀 JSON Comparator
✨ JSON Formatter
🔐 Base64 Encoder / Decoder
🪪 JWT Decoder
Paste a JWT above
The decoded header, payload, and token info will appear here
🎲 UUID Generator
Click Generate UUIDs
🔍 Regex Tester
Pattern
/
/
Enter a pattern above
Captured Groups
No groups captured yet.
🔗 URL Encoder / Decoder
🎨 Color Converter
Pick a colour
Enter a color value above to see details.
⏱️ Timestamp Converter