Tool Collection
9 tools available
Developer Tools
Explore free online developer tools designed for fast, accurate, and easy results. Work directly in your browser with simple, secure, mobile-friendly solutions and no signup required. Free browser-based developer tools: JSON formatter and validator, regex tester, API mock server, CSS animation builder and more. No install, no sign-up.
All Developer Tools
CSS Micro-Interaction & Animation Builder
Visual UI editor for generating pure CSS animations, progress bars, and geometric morphing effects.
JSON Toolkit – Formatter, Validator, Beautifier & Converter | ToolLok
Free online JSON Toolkit to format, validate, beautify, minify, repair, analyze, transform, and convert JSON into TypeScript, JSON Schema, CSV, YAML, and JavaScript.
QR Code, Barcode & Multi-Format Generator
Generate custom QR codes and professional barcodes for websites, Wi-Fi, contacts, products, events, and payments. Customize, preview, and download individual or bulk codes.
API Mock Server & Synthetic Data Generator
Design custom mock REST endpoints, simulate network latency and chaos testing, and export Express.js server scripts.
Text Difference Checker
Compare two text files or text versions online. Highlight added, removed, and unchanged lines, ignore whitespace, and export differences for free.
Interactive Regex Tester & Visualizer
Real-time regular expression evaluation with visual syntax breakdown trees and natural language explainers.
Legacy Codebase Refactorer & Modernizer
Instantly parse legacy JavaScript, jQuery, and React Class components into modern TypeScript and React Hooks.
XML Formatter & Validator
Format, beautify and validate XML documents online with customizable indentation, syntax error detection and private browser-based processing.
SQL Formatter
Beautify and format SQL queries online with support for popular database dialects, customizable keyword casing, indentation and downloadable SQL output.