Brie Developer Tools
Free, browser-based utilities for developers. No sign-up required — your data never leaves your device.
JSON Tools
Format, validate, and convert JSON data.
17 tools
XML Tools
Format, minify, escape, and convert XML data.
3 tools
HTML Tools
Format, validate, escape, and convert HTML content.
11 tools
CSS Tools
Prettify, minify, convert units, and transform CSS to preprocessor formats.
8 tools
JavaScript / TypeScript Tools
Minify, obfuscate, escape, and format JavaScript and TypeScript code.
4 tools
SQL Tools
Format, minify, and convert SQL queries.
3 tools
Code Formatters
Format YAML, GraphQL, Markdown, and other code formats.
3 tools
Security & Crypto
Generate hashes, UUIDs, passwords, and encryption utilities.
7 tools
Encoding / Decoding
Encode and decode Base64, URL, UTF-8, ASCII, hex, ROT13, Morse code, and more.
13 tools
Number / Base Conversion
Convert numbers between binary, octal, decimal, and hex. Also convert IP addresses and English number words.
11 tools
Color Tools
Convert colors between HEX, RGB, CMYK, and HSL formats.
7 tools
Random Generators
Generate random numbers, words, sentences, dates, times, usernames, and Lorem Ipsum text.
10 tools
Text Tools
Convert case, count words, reverse, repeat, sort, shuffle, and transform text.
15 tools
CSV / Data Tools
Convert CSV to text, text to CSV, and SQL INSERT statements to CSV.
3 tools
Date / Time Tools
Convert Unix timestamps to dates, and hours to seconds.
2 tools
Network / Browser Tools
Parse URLs and detect your browser, User-Agent, and screen size.
10 tools
Credit Card / Finance
Generate and validate credit card numbers using the Luhn algorithm.
2 tools
Math / Calculators
Round numbers, calculate XOR and bitwise operations, and generate Fibonacci sequences.
4 tools
Unit Conversion
Convert miles to kilometers, kilometers to miles, and Celsius to Fahrenheit.
3 tools
Image Tools
Generate and transform images directly in your browser.
1 tool
Comparison / Diff Tools
Compare code, JSON, text, XML, and strings side by side with highlighted differences.
5 tools
Barcode / QR
Generate QR codes and barcodes in multiple formats.
2 tools
JSON Tools
Format, validate, and convert JSON data.
JSON Formatter
Format and beautify your JSON data for better readability.
JSON Validator
Validate your JSON data and find syntax errors instantly.
JSON Minifier
Minify and compress your JSON by removing all whitespace and line breaks.
JSON Generator
Generate random JSON data for testing and development.
JSON to CSV
Convert JSON arrays to CSV format for spreadsheets and data analysis.
JSON to TSV
Convert JSON arrays to tab-separated values (TSV) format.
XML Tools
Format, minify, escape, and convert XML data.
HTML Tools
Format, validate, escape, and convert HTML content.
HTML Prettify
Format and indent HTML markup for better readability.
HTML Minify
Remove whitespace and compress HTML to reduce file size.
HTML Validator
Check your HTML for common issues and missing declarations.
HTML Escape
Escape special HTML characters to safe entity equivalents.
HTML Unescape
Convert HTML entities back to their original characters.
Strip HTML
Remove all HTML tags and return plain text content.
CSS Tools
Prettify, minify, convert units, and transform CSS to preprocessor formats.
CSS Prettify
Format and beautify CSS code with consistent indentation and line breaks.
CSS Minify
Minify and compress CSS by removing comments, whitespace, and line breaks.
CSS Units Converter (px to rem)
Convert CSS pixel values to rem units for scalable, accessible designs.
Rem to Px Converter
Convert CSS rem values back to pixel units for debugging or legacy support.
CSS to SCSS
Convert plain CSS to SCSS with nested selectors and $variables.
CSS to Sass
Convert CSS to Sass indented syntax — no braces or semicolons.
JavaScript / TypeScript Tools
Minify, obfuscate, escape, and format JavaScript and TypeScript code.
JavaScript Minifier
Minify JavaScript by removing comments, whitespace, and newlines.
JavaScript Obfuscator
Basic JavaScript obfuscation: rename variables to short names and encode string literals.
JavaScript Escape
Escape special characters in JavaScript strings: backslashes, quotes, newlines, and tabs.
TypeScript Formatter
Format TypeScript code with 2-space indentation and consistent line breaks.
SQL Tools
Format, minify, and convert SQL queries.
Code Formatters
Format YAML, GraphQL, Markdown, and other code formats.
YAML Formatter / Beautifier
Format and normalize YAML with consistent indentation and structure.
GraphQL Formatter
Format GraphQL queries and mutations with proper indentation and line breaks.
Markdown Formatter
Normalize Markdown: blank lines before headings, consistent list markers, no trailing whitespace.
Security & Crypto
Generate hashes, UUIDs, passwords, and encryption utilities.
UUID Generator
Generate random UUIDs (v4) for unique identifiers.
Hash Generator
Generate SHA-256 or SHA-512 cryptographic hashes from any text.
Random String Generator
Generate cryptographically random strings with customizable character sets.
Random Password Generator
Generate strong, cryptographically secure random passwords.
API Key Generator
Generate API-key-style strings with an optional prefix and custom length.
JWT Parser / Decoder
Decode and inspect JWT header, payload, and signature without a secret key.
Encoding / Decoding
Encode and decode Base64, URL, UTF-8, ASCII, hex, ROT13, Morse code, and more.
Base64 Encoder
Encode text to Base64, including full Unicode support.
Base64 Decoder
Decode Base64-encoded text back to its original string.
URL Encoder
Percent-encode a string for safe use in URLs and query parameters.
URL Decoder
Decode percent-encoded URL strings back to readable text.
UTF-8 Encoder
Show the UTF-8 byte sequence (hex) for any text string.
UTF-8 Decoder
Decode hex-encoded UTF-8 bytes back to readable text.
Number / Base Conversion
Convert numbers between binary, octal, decimal, and hex. Also convert IP addresses and English number words.
Binary to Decimal
Convert binary numbers (base-2) to decimal (base-10).
Decimal to Binary
Convert decimal numbers (base-10) to binary (base-2).
Octal to Decimal
Convert octal numbers (base-8) to decimal (base-10).
Decimal to Octal
Convert decimal numbers (base-10) to octal (base-8).
Decimal to Hex
Convert decimal numbers (base-10) to hexadecimal (base-16).
Hex to Binary
Convert hexadecimal numbers (base-16) to binary (base-2).
Color Tools
Convert colors between HEX, RGB, CMYK, and HSL formats.
HEX to RGB
Convert HEX color codes to RGB values.
RGB to HEX
Convert RGB color values to HEX color codes.
HEX to CMYK
Convert HEX color codes to CMYK color values.
CMYK to HEX
Convert CMYK color values to HEX color codes.
CMYK to RGB
Convert CMYK color values to RGB.
RGB to CMYK
Convert RGB color values to CMYK percentages.
Random Generators
Generate random numbers, words, sentences, dates, times, usernames, and Lorem Ipsum text.
Random Number Generator
Generate random integers between a custom min and max.
Random Decimal Number Generator
Generate random decimal (floating-point) numbers with customizable precision.
Random Word Generator
Generate a list of random common English words.
Random Sentence Generator
Generate grammatically plausible random sentences built from common words.
Random Paragraph Generator
Generate multiple random paragraphs built from random sentences.
Random Character Generator
Generate individual random characters from customizable character sets.
Text Tools
Convert case, count words, reverse, repeat, sort, shuffle, and transform text.
Text Uppercase Converter
Convert any text to UPPERCASE instantly.
Text Lowercase Converter
Convert any text to lowercase instantly.
Word Count
Count words, characters, lines, and sentences in any text.
Character Count
Count characters in text, with and without spaces.
Line Counter
Count the number of lines in any text.
Sentence Counter
Count the number of sentences in any text.
CSV / Data Tools
Convert CSV to text, text to CSV, and SQL INSERT statements to CSV.
Date / Time Tools
Convert Unix timestamps to dates, and hours to seconds.
Network / Browser Tools
Parse URLs and detect your browser, User-Agent, and screen size.
URL Parser
Parse a URL into its components: protocol, host, port, path, query, and hash.
What Is My User Agent
Detect and display your browser's User-Agent string with parsed browser, OS, and device info.
What Is My Browser
Detect your current browser name, version, and rendering engine.
What's My Browser Size
Detect your current browser window size, screen resolution, and device pixel ratio.
IPv4 Subnet Calculator
Calculate network address, broadcast, subnet mask, host range, and usable hosts from CIDR notation.
Crontab Generator
Build cron expressions with minute, hour, day, month, and weekday fields, plus a human-readable description.
Credit Card / Finance
Generate and validate credit card numbers using the Luhn algorithm.
Math / Calculators
Round numbers, calculate XOR and bitwise operations, and generate Fibonacci sequences.
Rounding Calculator
Round numbers to a specified number of decimal places using round, floor, or ceil.
XOR Calculator
Calculate the XOR of two integers and display the result in decimal, hex, and binary.
Bitwise Calculator
Perform bitwise operations (AND, OR, XOR, NOT, shift left, shift right) on integers.
Fibonacci Calculator
Generate the first N Fibonacci numbers.
Unit Conversion
Convert miles to kilometers, kilometers to miles, and Celsius to Fahrenheit.
Image Tools
Generate and transform images directly in your browser.
Comparison / Diff Tools
Compare code, JSON, text, XML, and strings side by side with highlighted differences.
Code Compare (Diff)
Compare two code snippets or text files and highlight the differences.
JSON Compare
Compare two JSON objects side by side and see structural and value differences.
Text Compare
Compare two blocks of plain text line by line and see every difference.
XML Compare
Compare two XML documents and highlight element, attribute, and value differences.
String Difference Checker
Check differences between two strings or short text snippets line by line.
Barcode / QR
Generate QR codes and barcodes in multiple formats.