Developer Tools Calculators
14 tools, each with formula and worked examples
JSON formatter, regex tester, UUID generator, and other developer utilities.
Data Formats· 5
JSON Formatter
Format, validate, and beautify JSON data instantly. Paste messy JSON and get clean, indented output with synta…
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds, milliseconds, and various da…
UUID Generator
Generate random UUID v4 and ULID identifiers instantly. Bulk generate multiple IDs, copy to clipboard, and cho…
Cron Generator
Build cron expressions visually with an intuitive interface. Select minutes, hours, days, months, and weekdays…
Color Converter
Convert colors between HEX, RGB, and HSL formats instantly. Perfect for web designers and developers working w…
Text & Code· 6
Regex Tester
Test and debug JavaScript regular expressions in real-time. Enter a pattern, flags, and test string to see mat…
Lorem Ipsum
Generate Lorem Ipsum placeholder text for your designs, mockups, and wireframes. Choose paragraph count, word …
Markdown Editor
Write markdown in a live editor and preview the rendered HTML in real-time. Supports headings, bold, italic, l…
Code Minifier
Minify HTML, CSS, and JavaScript code for production deployment. Strips whitespace, comments, and unnecessary …
Code Diff Checker — Compare
Compare two blocks of text or code side-by-side. See additions, deletions, and unchanged lines highlighted for…
Case Converter
Convert text between 9 case formats: camelCase, PascalCase, snake_case, kebab-case, dot.case, Title Case, Star…
Encoders & Decoders· 3
QR Code Generator
Generate QR codes from any text or URL. Customize size and download as PNG images. Perfect for sharing links, …
JWT Debugger
Decode and inspect JSON Web Tokens (JWT) client-side. View the header, payload, and signature information with…
HTML Entities
Encode and decode HTML entities instantly. Convert special characters to HTML entities and back between named,…