Developer Tools
Format, validate, encode and convert data used in software development and debugging.
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Unicode Converter
Convert text between readable characters, Unicode code points and common escaped representations.
Hash Calculator
Calculate common text or local-file digests in the browser and compare exact hexadecimal output for integrity checks.
ASCII Converter
Convert text to decimal, hexadecimal or binary character codes and convert supported code values back to text.
Base 2–36 Converter
Convert integers between binary, octal, decimal, hexadecimal and other supported positional number bases.
SQL Formatter
Format or compact SQL and normalize keyword case for easier review without connecting to a database.
JWT Decoder
Decode JSON Web Token header and payload segments locally without claiming that the token signature is valid.
Cron Expression Generator
Build and explain a standard five-field cron schedule for minute, hour, day of month, month and day of week.
Random Test Data Generator
Generate fictional person, email, IPv4, date or JSON test records locally. Synthetic fixtures, not verified personal data.
Developer Command Reference
Search a fixed reference of 20 Git, Linux, PowerShell, Docker and npm commands, then copy the displayed results.
Code Syntax Highlighter
Preview code with simple coloring for strings, numbers and selected keywords, optional line numbers, and copying of the original source.
CSS Inliner
Convert simple, flat CSS rules to inline HTML styles, with explicit rejection when different selectors match one element.
JSON Formatter and Validator
Format, minify and validate JSON locally, with parse feedback that helps isolate invalid commas, quotes, keys and nesting.
CSS Formatter and Minifier
Format CSS for readable review or minify valid CSS to reduce unnecessary whitespace.
HTML Formatter and Minifier
Format HTML with 2-space, 4-space or tab indentation. Conservative minification keeps comments and whitespace; code stays in your browser.
Slug Generator
Create a clean URL slug from a title. Keep Unicode letters or choose ASCII for supported Latin characters; everything runs in your browser.
JavaScript Formatter and Minifier
Format JavaScript for readable inspection or create a compact version for testing and transport.
Text and File Diff Checker
Compare two texts or local text files line by line, marking additions, removals and unchanged lines.
URL Encoder and Decoder
Percent-encode text for use in URL components or decode valid percent-encoded sequences into readable text.
Base64 Encoder and Decoder
Encode UTF-8 text as standard Base64 or decode Base64 back to UTF-8 text, then copy the result. Runs in your browser.