Developer Utilities
That Actually Work
No-nonsense tools for everyday dev tasks. JSON formatting, encoding, hashing, JWT inspection — all in one place, no login.
JSON Formatter & Validator
Prettify, minify, and validate JSON. Tree view with collapsible nodes.
Base64 Encoder / Decoder
Encode text or decode Base64 strings instantly. Supports URL-safe Base64.
UUID Generator
Generate v1, v4 UUIDs in bulk. Copy individually or all at once.
JWT Decoder
Decode and inspect JWT header, payload, and signature. Expiry check.
Cron Expression Generator
Build cron expressions visually. Human-readable schedule description.
Regex Tester
Test regular expressions with live match highlighting and group capture.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any text.
URL Encoder / Decoder
Encode or decode URLs and query string parameters instantly.
cURL Command Generator
Build cURL commands for GET, POST, PUT, DELETE with headers and body.
Color Converter
Convert between HEX, RGB, HSL, and CSS color names. Visual preview.
Timestamp / Epoch Converter
Convert Unix timestamps to readable dates and vice versa.
HTML / CSS Minifier
Minify HTML and CSS to reduce file size. Shows compression ratio.
Password Generator
Generate secure random passwords with custom character sets.
JavaScript Formatter
Beautify JavaScript with proper indentation.
QR Code Generator
Create QR codes from URLs or text. Download PNG.
HTML Formatter
Prettify HTML markup with readable indentation.
CSS Formatter
Format and beautify CSS stylesheets.
JWT Generator
Create HS256 JWT tokens with custom claims.
XML Formatter
Prettify XML documents with readable indentation.
IP Subnet Calculator
Calculate network, broadcast, mask, and hosts from CIDR.
HTML Entity Encoder
Escape special characters to HTML entities.
HTML Entity Decoder
Decode HTML entities back to plain text.
Gitignore Generator
Build .gitignore from Node, Python, Go, and more presets.
ASCII Table
Reference table for ASCII codes 0–127.
Bcrypt Hash Generator
Generate bcrypt password hashes with adjustable cost factor.
HMAC Generator
Generate HMAC-SHA256 or HMAC-SHA512 signatures from message and key.
API Key Generator
Generate cryptographically random API keys with custom format and prefix.
Unicode Escape Converter
Encode text to \uXXXX escapes or decode back to plain text.
JSONPath Tester
Evaluate JSONPath expressions against JSON documents.
JSON Schema Generator
Infer JSON Schema draft-07 from sample JSON data.