Developer Tools
Free online tools for developers — JSON, Base64, JWT, Regex, Color & more
JSON Formatter
Format, validate and minify your JSON data. Supports indentation.
Open Tool →Base64 Encoder
Encode and decode Base64 strings and files instantly in your browser.
Open Tool →JWT Decoder
Decode JSON Web Tokens. View header, payload and signature securely.
Open Tool →Regex Tester
Test regular expressions with live match highlighting and flags.
Open Tool →Color Converter
Convert between HEX, RGB, HSL and HSV color formats instantly.
Open Tool →CSS Unit Converter
Convert rem, em, vh, vw and more with custom base pixels.
Open Tool →Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text.
Open Tool →HTML Encoder
Encode and decode HTML entities for safe display in web pages.
Open Tool →URL Encoder
Encode and decode URL components and query strings instantly.
Open Tool →Developer Tools — Frequently Asked Questions
Where can I find a free online JSON formatter and validator for developers?
Convertor360 provides a professional-grade JSON formatter and validator that is 100% free. It helps developers format, minify, and validate JSON code directly in the browser with instant syntax error highlighting.
Is there a secure browser-based Base64 encoder and decoder available?
Our Base64 encoder and decoder is a secure, browser-based utility. Because all encoding and decoding happens locally on your device, your sensitive strings and files are never transmitted across the network.
Can I use these web developer tools for offline code formatting and testing?
Yes. Most of our web developer tools are built using client-side JavaScript, which means they support offline code formatting and testing once the initial page has loaded in your browser.
How do I securely decode JSON Web Tokens (JWT) online?
You can securely decode JSON Web Tokens using our JWT decoder tool. It allows you to inspect token headers and payloads privately without the risk of your data being intercepted or logged on a server.