URL Encode & Decode failed or not working — what can you do?

What you can do

• Open URL Encode & Decode and retry with a small known-good sample.
• Confirm you are not hitting this limit: Invalid %xx sequences show an error and produce no result.
• Check the FAQ below—encryption, size limits, and format mismatches are the usual causes.
• Still stuck? Try a private window, or read the full guide /#article/urlcodec.

FAQ

What limitations should I know?

Invalid %xx sequences show an error and produce no result.

When might it fail?

Legacy /#urlencode and /#urldecode redirect here.