The Dev Tools
Browse by category
9 category hubs covering every tool in the catalog.
JSON & Data
Format, validate, convert, and transform JSON, CSV, TSV, and XML — all in your browser.
→12 toolsEncoding & Security
Base64, URL encoding, JWT debugging, hashing, passwords, and secure random generation.
→8 toolsTime & Numbers
Unix timestamps, number bases, chmod permissions, age calculation, and number-to-words conversion.
→10 toolsCSS & Design
Gradients, shadows, borders, colors, and unit converters for front-end development.
→12 toolsText & Code
Regex testing, Markdown preview, text comparison, case conversion, SQL formatting, and code validation.
→6 toolsGenerators
Lorem ipsum, phone numbers, emoji, and other placeholder content for development.
→6 toolsEncoding & Decoding
Base64, URL encoding, JWT debugging, image conversion, and resize.
→4 toolsText Processing
String manipulation, case conversion, JSON formatting, and diff.
→3 toolsDeveloper Utilities
Timestamp conversion, color tools, and hashing.
→All tools in one list
Prefer a single catalog? See every developer tool grouped by these same categories.