Developer Tools Tools

Beautify HTML markup.

Minify CSS files.

Minify JS code.

Beautify SQL queries.

Render Markdown live.

Build signed JWT tokens.

Convert base-2 numbers to base-10.

Convert base-10 numbers to binary.

Convert decimal numbers to hexadecimal.

Convert hexadecimal back to decimal.

Convert base-8 numbers to base-10.

Convert base-10 numbers to base-8.

Explain what a cron schedule means.

Format and indent CSS code.

Format and indent JS code.

Beautify XML markup with indentation.

Convert XML documents into JSON.

Convert JSON objects into XML.

Flatten JSON arrays into CSV rows.

Convert CSV files into JSON arrays.

Convert simple YAML into JSON.

Convert JSON into clean YAML output.

Convert HTML markup to Markdown.

Convert JSON arrays to tab-separated values.

Convert tab-separated rows to JSON.

Convert JSON into PHP array syntax.

Escape any string for safe JSON embedding.

Unescape a JSON string back to raw text.

Convert CSV rows into a Markdown table.

Build base64 data: URIs from text.

Convert binary numbers to hexadecimal.

Convert hexadecimal numbers to binary.

Encode text to \u-escape sequences.

Decode \u-escape sequences back to text.

Count exact UTF-8 byte length of text.

List each character's Unicode code point.

Compute bitwise NOT of any integer.

Replace tabs with a configurable number of spaces.

Generate a TypeScript interface from any JSON.

Generate a Zod schema from any JSON object.

Clean and sort .env files.

Convert INI config files into JSON.

Convert JSON into INI config format.

Convert a .env file into a JSON object.

Parse and normalize timestamped log lines.

Explain any HTTP status code in plain English.

Find the MIME type for any file extension.

Build a Gravatar avatar URL from an email.

Generate placeholder image URLs at any size.

Compute transfer time for a file size at a speed.

Estimate download time for any file at any speed.

Recommend bitrate for a given resolution and FPS.

Compute PCM audio bitrate from sample rate.

Compute DPI from screen resolution and size.

Compute megapixels from width × height.

Convert bytes to KB, MB, GB, TB.

Convert between bps, Kbps, Mbps, Gbps, Tbps.

Convert FPS and seconds to frame counts and ms.

Live view of your viewport and DPR.

Compute PPI of any display.

Look up what a file extension means.

Compute packet loss percentage.

Generate fresh random placeholder image URLs.

Convert a JSON object to a TS interface.

Look up the meaning of any HTTP status code.

Find the MIME type for any file extension.

Safely escape strings for SQL queries.

Send GET/POST request and show response.

Convert text to ASCII art.

Stylized ASCII banner.

Convert text to ASCII codes.

Convert ASCII to binary.

Convert numbers between any two bases (2-36).

Note: bcrypt requires a server; we estimate cost.

Convert decimal numbers to binary.

Convert binary back to ASCII codes.

Convert binary numbers to octal.

Detect your browser.

Explain a cron expression.

Convert KB/MB/GB sizes.

Convert decimal codes back to text.

Inspect file size & type.

Merge multiple text files.

Generate a starter .gitignore.

Generate SHA-256 hash of text.

Convert decimal to hexadecimal.

Generate HMAC-SHA256.

Generate a starter .htaccess.

Show common HTTP headers reference.

Look up HTTP status codes.

Decode base64-wrapped JS.

Light JS obfuscation (base64 wrap).

Convert a number to English words.

Convert decimal numbers to octal.

Convert octal to binary.

Convert octal to hexadecimal.

Decode octal codes to text.

Convert numbers to/from Roman numerals.

Generate an HTML table from rows/cols.

Convert text characters to decimal codes.

Convert text to octal codes.

Show your User-Agent string.

Convert number-words to digits (simple).