Aura Dev is a free, fast, and secure collection of essential online tools for developers. Format JSON, decode JWTs, test Regex, generate hashes, and more—all in one minimal interface.
Everything you need, right in your browser. No data leaves your device.
Format, validate, and beautify JSON data.
Convert between YAML and JSON formats.
Convert JSON arrays to CSV format instantly.
Format and beautify XML code instantly.
Encode and decode Base64 strings instantly.
Convert numbers between Binary, Octal, Decimal, Hex.
Hex, Bin, Oct, Dec calculator.
Add, multiply, transpose matrices.
Check if a number is prime and find factors.
Convert between HEX, RGB, HSL, and CMYK formats.
Convert pixels to REM units and vice versa.
Convert Length, Weight, and Temperature units.
Convert text to binary and vice versa.
Convert text to hexadecimal and vice versa.
Encode and decode HTML entities safely.
Decode and inspect JSON Web Tokens securely.
Encode and decode URLs and query parameters.
Parse URLs into their components and query params.
Escape/Unescape strings for JSON, HTML, XML, Java.
Convert files to Base64 Data URIs.
Decode X.509 SSL certificates.
Encrypt and decrypt using PGP.
Encrypt and decrypt text using AES.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.
Generate Hash-based Message Authentication Codes.
Generate RSA Public and Private Key pairs.
Generate and verify secure Bcrypt password hashes.
Generate random and unique UUID (v4) strings.
Generate secure NanoIDs.
Generate ULIDs.
Create strong, secure, and random passwords.
Generate Time-based One-Time Passwords (TOTP).
Generate SEO-friendly URL slugs from text.
Generate placeholder text for your designs.
Generate realistic fake data.
Generate QR codes from text or URLs instantly.
Convert text into ASCII art using various fonts.
Create and explain Cron schedule expressions.
Generate SEO-friendly HTML meta tags.
Generate robots.txt files for your website.
Compare and choose open source licenses.
Test and debug regular expressions in real-time.
Minify HTML, CSS, and JavaScript code.
Format and beautify SQL queries.
Write and preview Markdown as HTML instantly.
Convert Markdown to PDF documents.
Count characters, words, lines, and paragraphs.
Compare two text snippets and see the differences.
Convert text to camelCase, snake_case, and more.
Shuffle, sort, and manipulate lists of text.
Visual permission calculator for Linux files.
Calculate IPv4 subnets and CIDR ranges.
Convert Unix timestamps to human-readable dates.
Parse and analyze User Agent strings.
Parse and validate international phone numbers.
Validate International Bank Account Numbers.
Calculate aspect ratios and resize dimensions.
Parse and validate .env files.
Analyze and validate package.json files.
Calculate semantic versioning ranges.
Test and debug HTTP requests.
Receive and inspect webhook payloads.
Quick reference for common Git commands.
Quick reference for common Docker commands.
Essential Linux terminal commands.
Essential React hooks and component patterns.
Essential Vim commands and shortcuts.
Essential SQL commands and queries.
Python syntax and standard library.
TypeScript types, interfaces, and generics.
CSS selectors, properties, and flexbox/grid.
Nginx configuration and commands.
kubectl commands and resources.
Markdown formatting syntax.
Searchable reference of HTTP response codes.