Your essential collection of offline-capable developer utilities. Fast, secure, and purely client-side.
Validate, format, and minify JSON data instantly. Best online JSON viewer and validator for developers.
Convert nested JSON arrays into HTML tables and export to CSV instantly.
Beautify complex SQL queries. Supports PostgreSQL, MySQL, and standard SQL dialects.
Prettify or minify XML code. Free online XML formatter with syntax highlighting.
Build and verify Cron schedules with an easy-to-use GUI. Includes human-readable descriptions.
Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input.
Generate placeholder text (Lorem Ipsum) for web design and mockups. Support paragraphs, sentences, words, and HTML tags.
Generate strong, random passwords instantly using browser-native cryptography. 100% client-side and secure.
Generate customizable QR codes for URLs or text. Adjust size, colors, and download instantly as PNG.
Generate random UUID v4 (Universally Unique Identifiers) instantly.
Encode and decode text to Base64 format securely. 100% client-side processing.
Convert text between camelCase, snake_case, PascalCase, kebab-case, and more.
Convert between HEX, RGB, HSL, CMYK, and Color Names with a bi-directional smart picker.
Convert JSON to CSV and CSV to JSON online. Supports custom delimiters (comma, semicolon, tab) and large datasets.
Convert data between JSON and XML formats. Support bi-directional conversion, minification, and prettifying.
Convert between JSON and YAML formats online. Essential tool for DevOps, Docker, and Kubernetes configurations
Convert numbers between Binary, Octal, Decimal, and Hexadecimal instantly.
Online URL Encode and Decode tool for handling special characters in URLs.
Convert Epoch timestamps to human-readable dates and vice versa.
Securely encrypt and decrypt text using AES with custom Key, IV, and Modes (CBC, ECB, etc.).
Decode and inspect JSON Web Tokens (JWT) headers and payloads without verifying signatures.
Compare two text files or code snippets to find differences line-by-line.
Test and debug regular expressions with real-time highlighting and a handy cheatsheet.
Level up your programming speed with MonkeyTyper. Practice typing real code snippets across 10 difficulty levels. Track WPM and accuracy.
Generate complex 'docker run' commands instantly. Comprehensive cheat sheet for Containers, Images, and Compose.
View cheat sheets for popular programming languages and frameworks.
Essential Linux CLI reference. Master file operations, networking, archives (tar), and system monitoring.
Master Unix/Linux file permissions with this interactive calculator and chmod reference guide. Calculate octal (755) and symbolic (-rwxr-xr-x) values instantly.
Master Vim editor with this quick reference guide. Learn navigation (hjkl), editing, saving, and how to exit Vim instantly.
The ultimate Regex dictionary. Common patterns for Email, URL, Password, and complete syntax reference.
Interactive Venn diagrams to master SQL joins. Visualize INNER, LEFT, RIGHT, and FULL joins instantly.