Developer

Write a regular expression and test it live against sample text, with matches highlighted instantly so you can debug and refine your pattern.

Create a regular expression from a plain-English description of the pattern you want to match, useful when you know the need but not the syntax.

Compare two JSON objects and highlight exactly what was added, removed, or changed between them, useful for reviewing API responses or configs.

Compare two blocks of plain text line by line, highlighting additions, deletions, and changes between the original and revised versions.

Diff two code snippets with syntax awareness, highlighting exactly what changed between versions, useful for reviewing edits before merging.

Beautify a compact or messy SQL query into a readable, properly indented structure, making complex queries easier to review and debug.

Compress a formatted SQL query down into a single compact line, useful for embedding queries in application code or configuration files.

Check whether a given string is a properly formatted UUID and identify which version it is, useful for debugging identifiers in code.

Convert a color value between HEX, RGB, and HSL formats, useful for developers and designers working across tools that expect different formats.

Convert a HEX color code into its equivalent RGB values, useful when a design tool gives you a HEX code but your code needs RGB instead.

Convert RGB color values into their equivalent HEX code, useful when you have RGB values from a design tool but need HEX for your CSS.

Convert RGB color values into HSL format, representing color as hue, saturation, and lightness, useful for making intuitive color adjustments.

Visually design a linear or radial CSS gradient with multiple color stops, then copy the generated gradient code straight into your project.

Visually design a CSS box shadow, adjusting offset, blur, spread, and color with live preview, then copy the generated CSS code.

Visually design rounded corners for an element, adjusting each corner independently, then copy the resulting CSS border-radius code.

Break down a browser's user agent string into readable browser, operating system, and device details, useful for debugging analytics.

Create cron expressions using a simple interface or parse existing cron schedules into human-readable descriptions.

Generate customized .gitignore files for specific programming languages, frameworks, and development environments.

Search any HTTP status code and view its meaning, category, and common causes, useful for debugging API responses and server errors.

Create properly formatted Markdown tables with an easy-to-use editor, including support for alignment and quick editing.

Generate a structured .env template file with environment variables for your project's configuration, ready for new projects or teammates.

Create a basic favicon from text or initials and export it in common formats, ready to use on your website or web app.

Visually set Linux file permissions and instantly get the matching chmod octal and symbolic notation.

Calculate network address, broadcast address, subnet mask, and usable host range from any IP and CIDR prefix.

Create a scannable QR code that connects devices to your WiFi network instantly, no typing passwords required.

Convert numbers between binary, octal, decimal, and hexadecimal instantly, with support for any custom base from 2 to 36.

Build a curl command visually by setting the method, URL, headers, and body, then copy the ready-to-run command for your terminal.

Paste any JSON and instantly generate a matching TypeScript interface, including nested objects and arrays.