Q: What does URL decoding do?
URL decoding converts percent-encoded characters back to their original form. For example, %20 becomes a space, %26 becomes &, and %C3%A9 becomes an accented "e". It reverses the URL encoding process to reveal the original text.
Q: Can the decoder handle double-encoded URLs?
The decoder processes one level of encoding at a time. If your URL has been encoded multiple times (e.g., %2520 instead of %20), you may need to run the decoder multiple times to fully decode the string.
Q: Does the decoder handle + as a space character?
Yes, the decoder recognizes + as a space character, which is the convention used in form-encoded data (application/x-www-form-urlencoded). Both + and %20 are correctly decoded to spaces.
Q: What happens if the encoded string contains invalid sequences?
If the input contains malformed percent-encoding (e.g., %GG or a truncated %2), the decoder will flag the error. Valid portions of the string are still decoded, and invalid sequences are preserved as-is or reported.
Q: Is my data secure when using this tool?
Yes. All decoding happens entirely in your browser using client-side JavaScript. No data is ever sent to any server, stored in cookies, or logged anywhere. Your input remains completely private on your device.