URL Encoder & Decoder
Percent-encode text or decode it back.
%URL Encoder & Decoder
All processing happens locallyWhat this tool does
URL Encoder & Decoder is a percent-encoding converter, the calculation runs entirely in your browser and nothing is uploaded.
URL encoding converts characters that are not allowed in a URL into a percent sign plus hex, for example a space becomes %20. It is used constantly for search terms and callback parameters.
How to use it
- Paste or type your content into the input field at the top, or press the sample button to load demo data.
- Adjust the options below the input, such as output format, separators, letter case or precision.
- Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
- When the result looks right, use the copy button in the corner, or download it as a local file.
Tips and notes
Clean up stray spaces and line breaks before pasting for more accurate results.
FAQ
Component mode encodes everything including colons and slashes, ideal for a single parameter value; full-URI mode keeps structural characters so a whole URL stays usable.
In form submissions yes. Strict percent-encoding uses %20, and the decoder accepts both.
Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.
No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.
Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.
Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.