Marty's Dev Tools

JSON Formatter

Format, validate, and minify JSON instantly.

Regex Tester

Test regex live with match highlighting and plain-English explanations.

Base64 Encoder

Encode and decode Base64 strings, images, and files.

UUID Generator

Generate and decode UUIDs, ULIDs, and Snowflake IDs.

Lorem Ipsum

Generate placeholder text as JSON, SQL, CSV, HTML, and more.

Diff Checker

Compare two texts side-by-side at line or character level.

YAML / JSON / TOML

Convert between YAML, JSON, and TOML in a three-pane editor.

Hash Generator

Generate MD5, SHA, and bcrypt hashes from text or files.

Colour Converter

Convert colours between hex, RGB, HSL, and nearest Tailwind class.

HTTP Status Codes

Plain-English reference for every HTTP status code.

Slug Generator

Convert text to kebab-case, snake_case, camelCase, and PascalCase.

Flexbox / Grid

Build Flexbox and Grid layouts visually and export CSS or Tailwind.

Markdown Preview

Live Markdown editor with side-by-side HTML preview and export.

Cron Builder

Build or decode cron expressions with next-run previews.

JWT Decoder

Decode JWT tokens and inspect claims client-side.

Timestamp Converter

Convert Unix timestamps to readable dates across timezones.

Docker Compose Validator

Validate docker-compose.yml and visualise service dependencies.

.env Diff

Spot missing keys and value changes between two .env files.

Chmod Calculator

Build Unix file permissions with checkboxes and presets.

Redirect Tester

Trace redirect chains from .htaccess, Nginx, and Caddy rules.

SQL Formatter

Format and prettify SQL with dialect support and N+1 detection.