URL Encoder/Decoder
Encode and decode URLs instantly with support for query string parsing. All processing happens in your browser for maximum privacy.
Enter plain text or URL to encode, or load a sample.
How to Use
Encoding URLs
- •Select "Encode" mode
- •Enter your URL or text in the input field
- •The encoded result appears automatically
- •Click "Copy" to copy the result to clipboard
Decoding URLs
- •Select "Decode" mode
- •Enter your URL-encoded string in the input field
- •The decoded result appears automatically
- •Query parameters are parsed automatically when detected
Common Use Cases
API Requests
Encode URL parameters for GET requests when building API calls or web services.
Form Data
Encode form inputs for URL submission in application/x-www-form-urlencoded format.
Deep Linking
Create safe URLs for mobile app deep links with special characters and parameters.
Query Strings
Parse and debug URL parameters to understand data being passed in query strings.
What is URL Encoding?
URL encoding (also known as percent-encoding) is a mechanism for encoding information in a Uniform Resource Identifier (URI). It's used to ensure that URLs only contain characters from a limited, safe set that can be reliably transmitted over the internet.
Special characters and non-ASCII characters must be encoded because URLs can only contain a limited set of characters from the US-ASCII character set. The encoding process converts characters into one or more bytes, then represents each byte as a percent sign (%) followed by two hexadecimal digits.
Common Encoded Characters
This tool uses the native JavaScript encodeURIComponent() and decodeURIComponent() functions, which properly encode all characters except: A-Z a-z 0-9 - _ . ! ~ * ' ( )