Free Online Developer Tools
Format, encode, minify, and generate — essential dev utilities that run entirely in your browser.
JSON Formatter
Format, validate, and minify JSON.
🔐Base64 Encode/Decode
Encode and decode Base64 strings.
🌐URL Encode/Decode
Encode and decode URL components.
📄HTML Minifier
Minify HTML to reduce file size.
🎨CSS Minifier
Minify CSS to reduce file size.
🔑Password Generator
Generate strong, secure passwords.
🆔UUID Generator
Generate random UUID v4 identifiers.
⏱️Timestamp Converter
Convert Unix timestamps to dates.
Why Use Our Developer Tools?
Developers constantly work with data formats, encoding schemes, and code optimization. Instead of installing desktop software or relying on cloud services that might store your data, our developer tools give you instant results right in your browser. Every tool runs locally using native JavaScript APIs — no server-side processing, no data collection, and no third-party dependencies.
Whether you're debugging a malformed JSON response from an API, encoding a string for a URL parameter, or generating a strong password for a new service, these tools are designed to save you time without leaving your browser tab.
Tools for Every Development Task
The JSON Formatter lets you paste raw or minified JSON data and instantly beautify it with customizable indentation — or validate it to catch syntax errors. Use the Base64 Encoder/Decoder for embedding images, handling API tokens, or working with MIME-encoded data. The URL Encoder/Decoder correctly handles special characters in query strings and path segments.
For performance optimization, the HTML and CSS Minifiers strip whitespace, comments, and redundant characters to produce compact production-ready code. The Password Generator uses the Web Crypto API (crypto.getRandomValues) to create cryptographically secure passwords with configurable length and character sets. The UUID Generator produces RFC 4122 version 4 identifiers, and the Timestamp Converter translates between Unix epoch seconds and human-readable dates with a live clock display.