A comprehensive collection of 24+ developer utilities and SDK tools. Generate IDs, hash passwords, decode JWTs, compare JSON, test regex, and more.
Our toolkit is designed with the modern developer in mind. Fast, secure, and accessible anywhere, ensuring your workflow remains uninterrupted and private.
All tools run entirely in the browser with zero server latency. No data ever leaves your machine, ensuring maximum speed.
Nothing is stored or tracked. Your sensitive data stays in your browser session and is never sent to any external server.
Full offline support after the initial load. No sign-up required. Free and open-source for all developers globally.
Create unique identifiers, mock data, placeholder text, and QR codes
Professional unique identifier generator. Quickly create secure UUID v4, NanoID, CUID, ULID, and other industry-standard IDs for your development and testing needs.
Create realistic mock data for your applications. Generate random user profiles, structured addresses, and consistent JSON data sets for prototyping and automated testing.
Generate valid random Thai Citizen ID numbers (CID) for testing and development. Ensure your application handles Thai identity verification flows correctly with compliant mock data.
Standard placeholder text generator for designers and developers. Create custom Lorem Ipsum paragraphs, sentences, or words to fill your layouts and test typography.
Fully customizable QR code generator. Create high-quality QR codes for URLs, WiFi credentials, vCards, and plain text with adjustable error correction and styling options.
Secure your data with password generation, hashing, and encryption algorithms
Advanced secure password generator. Create strong, cryptographically secure passwords with custom lengths, character sets, and inclusion rules to protect your accounts and data.
Securely hash and verify passwords using industry-standard algorithms. Support for bcrypt, Argon2, scrypt, and PBKDF2 with customizable cost factors and salt configurations.
Comprehensive text hashing tool. Quickly generate MD5, SHA-1, SHA-256, and SHA-512 hashes with real-time updates for data integrity verification and cryptographic purposes.
Keyed-hash message authentication code (HMAC) generator. Compute secure HMACs using custom secret keys and a variety of standard hash algorithms for secure data verification.
Powerful browser-based encryption and decryption. Securely transform text using AES-GCM or AES-CBC algorithms with your own secret keys for maximum data privacy and security.
Privacy-first serverless P2P file transfer — send images, photos, documents, folders, and any file type directly browser-to-browser via WebRTC. Zero server storage, SHA-256 integrity verification, QR code handshake, and real-time transfer dashboard.
Generate cryptographically secure RSA and ECDSA key pairs. Convert keys seamlessly between PEM, JWK, and raw formats, and perform asymmetric message signing and verification directly in your browser.
Encode, decode, and transform data between formats like Base64, URL, JWT, and number bases
Efficient Base64 encoder and decoder. Quickly convert text or images to Base64 format and back with live previews, perfect for embedding assets or data URI generation.
Professional URL encoding and decoding tool. Effortlessly transform URL components, query parameters, and special characters into web-safe formats and back with instant results.
Developer-focused JWT decoder and inspector. Securely decode JSON Web Tokens directly in your browser to inspect header details, payload claims, and signature information.
Secure JSON Web Token (JWT) builder. Create and sign your own JWTs with custom payloads, headers, and secret keys for testing authentication flows and token verification.
Versatile number base converter for developers. Seamlessly switch between binary, octal, decimal, and hexadecimal representations with support for large numbers and instant updates.
Format, validate, compare, and convert your JSON data
Advanced JSON formatter and validator. Cleanly prettify, minify, and repair JSON data with real-time syntax highlighting for better readability and debugging.
Instant JSON to TypeScript interface generator. Paste your JSON data to automatically create accurate, strictly-typed TypeScript definitions for your development projects.
Comprehensive JSON Schema generator. Quickly create JSON Schema (Draft-07) definitions from your sample JSON data to use for validation and API documentation.
Professional JSON comparison tool. Visually compare two JSON objects side-by-side to identify additions, removals, and modifications with detailed diff highlighting.
Flexible CSV and JSON data converter. Seamlessly transform data between CSV and JSON formats with advanced options for delimiters, headers, and nested objects.
Enhance your frontend with CSS generators, color converters, and SEO tools
Interactive CSS gradient builder. Design stunning linear, radial, and conic gradients with a visual editor, and automatically generate clean, browser-compatible CSS code.
Precision CSS unit converter for modern web design. Easily convert between px, rem, em, vw, and vh with customizable root font-size context to ensure responsive layout accuracy.
Comprehensive color format converter. Seamlessly transform color codes between HEX, RGB, HSL, CMYK, and CSS Color Names with real-time visual previews and contrast checking.
All-in-one SEO and meta tool. Preview OpenGraph cards, analyze SEO best practices, generate manifest.json files, and export optimized favicon assets for your web applications.
Analyze, modify, and test strings, regex patterns, and markdown files
Complete suite of string manipulation tools. Includes case conversion, character counting, text reversing, and whitespace removal to simplify common text processing tasks.
Real-time regular expression tester and debugger. Validate your regex patterns with instant syntax highlighting, detailed match explanations, and live text testing.
Advanced text comparison and diff tool. Quickly compare two blocks of text to identify and highlight differences, additions, and removals with a clear side-by-side view.
Feature-rich Markdown editor with instant live preview. Full support for GitHub Flavored Markdown (GFM), tables, task lists, and code blocks for documentation and content creators.
Professional LINE message formatter. Easily convert Markdown text into a perfectly compatible format for LINE Messenger, ensuring your messages look great on any mobile device.
Work seamlessly with timestamps, timezones, and cron expressions
Universal Unix timestamp and date converter. Seamlessly transform between Unix epochs (seconds and milliseconds) and human-readable dates in local or UTC time formats.
Accurate global timezone converter and world clock. Effortlessly schedule meetings or convert times across any world timezone with support for daylight savings and local offsets.
Intuitive cron expression parser and scheduler. Translate complex crontab syntax into clear, human-readable text and view the next scheduled execution times for your jobs.
Convert and compress images and files efficiently
High-speed browser-based image converter. Effortlessly transform images between PNG, JPEG, WebP, and BMP formats without uploading any data to a server for maximum privacy.
Intelligent file and image compression tool. Optimize PNG, JPEG, PDF, and other generic files for faster web loading while maintaining high visual quality and metadata control.