Marty's Dev Tools
A collection of lightning-fast developer utilities, designed to eliminate the friction in your daily dev cycle. No bloat, no cost, just tools that work.
General
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.
Front-end
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.
Back-end
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.