Developer Tools

JSON, SQL, JWT, regex, encoding, and diff utilities for day-to-day development. Paste sensitive configs locally no cloud processing.

Available now

Beautify and format minified JSON instantly.

Validate JSON and get a clear error message if it is invalid.

Base64 Encode / Decode

Encode text to Base64 or decode Base64 strings instantly.

URL Encoder / Decoder

Encode or decode URL components and query strings.

Minify HTML to reduce file size and improve load times.

Timestamp Converter

Convert Unix timestamps to human-readable dates and back.

Test and debug regular expressions with live match highlighting.

Pick colors and convert between HEX, RGB, and HSL formats.

Generate cryptographically random v4 UUIDs instantly.

Decode and inspect JSON Web Token (JWT) payloads.

Beautify and format SQL queries with syntax highlighting support.

Compare two texts or code files side by side.

Create HS256 JWT tokens for testing and development.

Cron Expression Generator

Build cron expressions visually with presets.

Parse cron expressions and see the next run times.

Markdown Previewer

Live Markdown editor with instant HTML preview.

Convert HEX color codes to RGB values.

UUID Bulk Generator

Generate multiple UUID v4 identifiers at once.

SHA256 Generator

Generate SHA-256 hashes from text.

bcrypt Generator

Generate bcrypt password hashes for testing.

.htaccess Redirect Generator

Generate Apache .htaccess redirect rules.

robots.txt Generator

Create robots.txt files for search engine crawlers.

Sitemap Generator

Generate XML sitemaps from a list of URLs.

About our Developer Tools

JSON, SQL, JWT, regex, encoding, and diff utilities for day-to-day development. Paste sensitive configs locally no cloud processing.

Common questions

Which JSON standard? Standard JSON with clear parse errors; use the formatter for pretty output.

Can I use these in CI? These are browser tools; use CLI tools in pipelines.