Developer Tools
URL Decoder
Decode percent-encoded URLs and query strings back into readable text. Use decodeURIComponent for individual values (it also decodes /, ?, & and =), or decodeURI when you want to keep an entire URL's structure intact.
Your input is processed locally in your browser. It is not uploaded to Dueneo.
Loading URL Decoder…
How to use
- 1
Paste the encoded string
Drop a percent-encoded URL, query value or token into the input box.
- 2
Pick the decoder
Choose decodeURIComponent to decode everything, or decodeURI to leave URL syntax characters intact.
- 3
Decode
Click Decode. Invalid percent escapes (like a stray %) will produce a clear error message.
- 4
Copy the result
Use the Copy button to put the decoded string on your clipboard.
Common use cases
- Inspect an encoded URL parameter from a log file.
- Recover the original text behind a percent-encoded query string.
- Verify whether an OAuth callback URL was encoded correctly.
- Decode a redirect_uri parameter during a debugging session.
Limitations
- A single
%not followed by two hex digits will cause a decode error. - Inputs larger than 1 MB are rejected to keep the tab responsive.
- Plus signs (
+) are not converted to spaces — that only happens inapplication/x-www-form-urlencodedcontexts.