Developer
Inspect, format, encode, and decode developer payloads. Free, client-side, with zero server uploads for 100% privacy.
JSON Formatter
Format, validate, and minify JSON data with line & column syntax diagnostics.
JWT Decoder & Inspector
Decode JSON Web Tokens (Header, Payload, Claims, Expiration) client-side securely.
UUID / GUID Generator
Generate standard Version-4 UUIDs in bulk (1 to 1000) with hyphens and uppercase options.
Code Beautifier & Minifier
Beautify or minify HTML, CSS, and JavaScript code snippets for clean formatting.
SQL Query Formatter
Format and indent SQL queries (SELECT, INSERT, UPDATE, JOINs) for readability.
Cron Expression Generator
Build cron schedules visually and understand what cron syntax means in plain English.
Regex Tester
Test regular expressions with real-time flag customization and group capture parsing.
Base64 Encoder / Decoder
Encode and decode Base64 strings with byte size statistics and quick swap.
URL Encoder / Decoder
Encode and decode URLs and inspect query parameters in a formatted table.
Timestamp Converter
Convert Unix epoch timestamps to human-readable dates across international timezones.
Hash Generator
Compute SHA-256, SHA-1, SHA-384, and SHA-512 cryptographic hashes for text and files.
Text Diff Checker
Compare two text versions side by side with line numbers and added/removed indicators.
Markdown Preview
Live split-pane markdown editor with instant HTML formatting and sample preview.