JSON Formatter
Format, validate, and beautify JSON data online. Improve readability, catch errors, and optimize your workflow—no signup needed.
Try JSON Formatter →Welcome to JS Tools
Boost your web development workflow with our free online tools. Instantly format JSON, encode/decode Base64, encode/decode URLs, and more. Fast, secure, and easy-to-use utilities for developers and webmasters.
JSON Formatter
Format, validate, and beautify JSON data online. Improve readability, catch errors, and optimize your workflow—no signup needed.
Base64 Encoder / Decoder
Encode or decode data using Base64 online. Convert text, images, or files—fast, secure, and privacy-friendly. No data stored.
URL Encoder
Encode or decode URLs for safe web transmission. Instantly encode or decode URL components for web development and APIs.
Image to Base64
Convert PNG, JPG, SVG, GIF, and more to Base64 or CSS Data URL. Instantly encode images for HTML, CSS, or JSON.
Word & Character Counter
Count words, characters (with and without spaces) in your text instantly. Perfect for developers, writers, and SEO specialists.
JWT Decoder
Decode and inspect JWT tokens online. Instantly view header, payload, and signature for debugging and development. No data stored.
Random Number Generator
Generate random numbers online for development, testing, or fun. Set your range and get a secure, privacy-friendly random integer instantly.
Lucky Number Generator
Generate your lucky number instantly for games, raffles, or daily inspiration. Fast, secure, and privacy-friendly. No signup required.
Speech To Text Converter
Convert speech to text instantly in your browser. Free, privacy-friendly, and accurate speech recognition for developers and content creators.
Password Generator
Generate strong, secure, and customizable passwords instantly. Perfect for developers and security-focused users.
Age Calculator
Instantly calculate your age in years, months, and days. Developer-focused, accessible age calculator tool.
Date Time Difference Calculator
Calculate the precise difference between any two dates and times. Get results in days, hours, minutes, and seconds. Perfect for developers and planners.
Countdown Timer
Create and share a countdown timer for events, exams, workouts, New Year, Pomodoro, meetings, and more. Customizable, shareable, fullscreen, with sound and confetti.