Developer tools
23 tools are rendered through the shared template.
Regex Tester
Run a regular expression against test text and inspect matches and groups.
Cron Generator
Combine minute, hour, day, month, and weekday fields into a cron expression.
JSON Formatter
Validate JSON and format it for reading or minify it into one line.
SQL Formatter
Apply browser-side keyword line breaks and indentation to SQL.
Timestamp Converter
Convert Unix timestamps, milliseconds, and ISO dates to local time and UTC.
UUID Generator
Generate UUID v4 values with the browser crypto API.
JWT Decoder
Decode JWT header and payload in the browser. Signatures are not verified.
Password Generator
Generate random passwords with the browser crypto API.
HTML Formatter
A browser MVP formatter that applies line breaks and indentation around HTML tags.
CSS Formatter
Apply line breaks and indentation around CSS blocks, declarations, and semicolons.
JavaScript Formatter
A browser MVP formatter that tidies JavaScript around braces and semicolons.
XML Formatter
Apply line breaks and indentation around XML tags.
Diff Checker
Compare two texts line by line and mark added, removed, and changed lines.
Color Converter
Convert HEX, RGB, and HSL color values.
HTACCESS Generator
Generate common Apache .htaccess rewrite rule drafts.
Meta Tag Generator
Generate HTML meta tag drafts for SEO and sharing.
Robots.txt Generator
Generate robots.txt from User-agent, Allow, Disallow, and Sitemap rules.
Sitemap.xml Builder
Convert a URL list into sitemap.xml format.
HTTP Status Lookup
Look up the meaning and class of HTTP status codes.
Unicode Converter
Convert characters to Unicode code points and escape notation.
Escape / Unescape
Escape or unescape HTML, URL, and JavaScript strings.
Number Base Converter
Convert between decimal, hexadecimal, octal, and binary numbers.
QR Code Generator
Generate real QR code SVG and PNG images from text or URLs.