About URL Encoding
URL encoding converts characters into a format that can be transmitted over the Internet. Special characters like spaces, ampersands, and non-ASCII characters are replaced with % followed by hexadecimal digits.
Common Encoded Characters:
Space→%20&→%26=→%3D?→%3F/→%2F
Use Cases:
- Encoding URL parameters
- Preparing data for API requests
- Handling special characters in URLs
- Decoding encoded URLs
Bidirectional Conversion
Switch between encoding and decoding with a single click. The tool automatically handles the conversion in both directions.
Real-Time Processing
See results instantly as you type. No need to click a button - the conversion happens automatically.
Special Character Support
Handles all URL-unsafe characters including spaces, ampersands, question marks, and non-ASCII characters.
Swap & Continue
Use the swap feature to quickly encode then decode, or use the output as new input for chained operations.
Common Use Cases
What is URL Encoding?
URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI). It converts characters into a format that can be safely transmitted over the Internet.
Certain characters have special meaning in URLs (like ?, &, =)
or are not allowed at all (like spaces and non-ASCII characters). URL encoding replaces these characters with a %
followed by two hexadecimal digits representing the character's ASCII value.
When to Use URL Encoding
- When passing data in URL query strings
- When working with APIs that require URL-encoded parameters
- When embedding URLs in HTML or JavaScript
- When handling user input that may contain special characters
100% Private & Secure
All URL encoding and decoding happens entirely in your browser. Your data is never sent to any server. This tool works offline and processes everything locally on your device.