About URLCoder Pro

Version 1.0.0

What is URLCoder Pro?

URLCoder Pro is a free, fast, and secure online tool for encoding and decoding URLs and text. Whether you're a web developer debugging query strings, a QA engineer testing API endpoints, or anyone who needs to convert special characters to URL-safe formats, this tool has you covered.

Features

Our tool supports five encoding methods to cover virtually every use case in web development:

encodeURIComponent

The most commonly used URL encoding method. It encodes all characters except A-Z a-z 0-9 - _ . ! ~ * ' ( ). This is what you should use when encoding individual query parameter values.

encodeURI

Encodes a complete URI while preserving structural characters like :, /, ?, #, and =. Use this when you have a full URL that may contain unsafe characters but you want to keep the overall URL structure intact.

Base64

Converts text to and from Base64 encoding. Particularly useful for encoding binary data for transmission over text-based protocols, embedding small data payloads in URLs, or working with APIs that require Base64-encoded parameters. Fully supports Unicode.

HTML Entities

Converts special characters to their HTML entity equivalents. Essential for preventing XSS attacks when displaying user-generated content in web pages, and for ensuring special characters render correctly in HTML documents.

Punycode

Encodes and decodes Internationalized Domain Names (IDN). If you work with domain names containing non-ASCII characters — such as münchen.de or 例え.jp — Punycode converts these to ASCII-compatible representations.

Additional Features

Real-time Encoding: Toggle real-time mode to see encoding results as you type.

Auto-detect: Enable auto-detection to analyze your input and select the appropriate decoder automatically.

Batch Processing: Expand batch mode, enter one URL per line, and process them all in a single click.

Clipboard Integration: One-click paste and copy buttons.

Keyboard Shortcuts: Ctrl+Enter to encode, Ctrl+Shift+Enter to decode.

Privacy & Security

All encoding and decoding happens entirely in your browser. No data is ever sent to our servers. We use no analytics, no tracking cookies, and no advertising. Read our full Privacy Policy for details.

Technology

Built with vanilla JavaScript for maximum performance and zero dependencies. The backend uses PHP for secure page delivery and security headers. No frameworks, no bloat.

Contact

Found a bug or have a feature request? Reach us at privacy@kristian-pandzic.com.