URL Encoder
Transform URLs and strings into percent-encoded format instantly
Enter text to generate encoded URL
Quick Examples
What is URL Encoding?
URL encoding, also known as percent encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. It converts characters into a format that can be transmitted over the Internet safely.
URLs can only contain a limited set of characters from the ASCII character set. Any character outside this set must be encoded. URL encoding replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits corresponding to the character's code point.
When Should You Use URL Encoding?
Query Parameters
When passing data through URL query strings (e.g., search queries, form data)
Special Characters
When URLs contain spaces, symbols, or non-ASCII characters
API Requests
When constructing RESTful API endpoints with dynamic parameters
Email Links
When creating mailto links with pre-filled subject or body text
Encoding Types Explained
Standard (encodeURI)
Encodes a complete URI by escaping characters that are not
allowed in URLs. It preserves special URI characters like :, /, ?, and &. Use this when encoding a full URL.
Component (encodeURIComponent)
Encodes a URI component by escaping all characters except letters, digits, and a few special characters. Use this when encoding query parameters or path segments.
Full Encode
Encodes every character to its percent-encoded form, including letters and digits. This is useful for debugging or when maximum encoding is required.
Frequently Asked Questions
Can I encode multiple URLs at once?
Currently, this tool processes one string at a time. For batch processing, you can encode URLs one by one.
Is URL encoding reversible?
Yes, URL encoding is completely reversible. You can decode any percent-encoded string back to its original form using a URL decoder.
Is this tool safe to use?
Absolutely! All encoding happens in your browser using JavaScript. No data is sent to any server, ensuring your complete privacy and security.
What's the difference between URL encoding and HTML encoding?
URL encoding converts characters for use in URLs (using % followed by hex codes), while HTML encoding converts characters for display in HTML (using entities like & or <).