Free Online Developer Tools

Fast, simple, and privacy-focused utilities for developers. All tools work directly in your browser with no data sent to servers.

JSON Formatter

Format, validate, and minify JSON data instantly. Perfect for debugging and API development.

Case Converter

Convert text to uppercase, lowercase, camelCase, snake_case, kebab-case, and sentence case.

UUID Generator

Generate random UUID v4 identifiers for databases, APIs, and unique identification.

Color Converter

Convert colors between HEX and RGB formats with live preview for web design.

Cron Generator

Create cron expressions for scheduled tasks with presets and visual builder.

Word Counter

Count words, characters, lines, and analyze text length for writing and content.

Diff Checker

Compare two text files or code snippets and highlight differences line by line.

Base64 Encoder / Decoder

Encode and decode Base64 strings instantly with support for text and files.

HTML / CSS / JS Minifier

Minify and beautify HTML, CSS, and JavaScript code to reduce file size.

Regex Tester

Test regular expressions with live pattern matching and highlighting.

URL Encoder / Decoder

Encode and decode URLs for safe transmission in web applications.

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text by paragraphs, sentences, or words.

Frequently Asked Questions

Are these developer tools really free?

Yes, all our online tools are completely free to use with no registration required. Use them as much as you need for personal or commercial projects.

Is my data safe and private?

Absolutely. All processing happens entirely in your browser. No data is sent to our servers or stored anywhere. Your information never leaves your device.

Do I need to install anything?

No installation needed. These are browser-based tools that work instantly. Just visit the tool page and start using it immediately.

Can I use these tools offline?

Once a tool page is loaded, most functionality works offline. However, you'll need an internet connection to initially access the pages.

Which browsers are supported?

All modern browsers including Chrome, Firefox, Safari, Edge, and Opera. The tools are optimized for both desktop and mobile devices.