What is percent encoding?
Percent encoding replaces special characters with %HH so URLs remain valid in browsers and requests.
URL encoder and decoder
Turn special characters into percent encoding and decode URL strings instantly in your browser.
How to use the URL Encoder
Encode special characters or decode percent-encoded URLs in seconds.
- Choose Encode to convert text into percent-encoded URL format.
- Choose Decode to turn a percent-encoded URL back into readable text.
- Copy the output or clear to start over.
Example
Input
Hello world? q=Zettools & more
Output
Hello%20world%3F%20q%3DZettools%20%26%20more
Spaces become %20 and reserved characters are percent-encoded.
URL Encoding FAQs
Can I encode a full URL?
Yes. Encode any string or URL component, and avoid double-encoding characters that are already percent-encoded.
Does this tool send my data to a server?
No. Encoding and decoding happen in your browser.