Read encoded parameters
Decode query values so tracking parameters, redirect destinations, and API inputs are easier to inspect.
URL Encoder Decoder
Encode and decode URL text
Encode URL components for query strings or decode percent-encoded text back to readable form. The conversion runs locally.
Common uses
Use this for query values, redirect parameters, copied URLs, API examples, and debugging encoded web strings.
URL encoding guide
URL Encoder Decoder helps read and prepare percent-encoded web strings. It is useful for query parameters, redirect URLs, API examples, analytics links, and debugging copied web addresses.
Prepare safe components
Encode values that contain spaces, punctuation, or non-ASCII characters before placing them in a URL component.
Debug links
Compare raw and decoded values when a copied URL behaves unexpectedly.
Case study: reading a failed redirect
A support engineer receives a login redirect URL from an error report. They decode only the return_url parameter, identify that it points to an old path, redact the account identifier, and include the sanitized value in a bug ticket.
- Inspect decoded destinations before opening them.
- Preserve the original encoded value for reproduction.
- Redact user identifiers and tokens before sharing.
Recommended workflow
- Paste the URL component or encoded string.
- Use decode to inspect values copied from a browser address bar or log.
- Use encode for individual parameter values before building a link.
- Do not repeatedly encode the same value unless double encoding is intentional.
Quality checks before using the result
- Decode only the parameter you need when reviewing a long URL from logs or support tickets.
- Check whether the value has been encoded more than once before deciding it is still unreadable.
- Redact emails, tokens, session IDs, and internal redirect URLs before sharing decoded output.
Questions about this tool
Why did percent signs appear?
Percent encoding represents characters that need escaping inside URLs.
Should I encode a whole URL?
Usually encode individual parameter values rather than the entire URL.
Can decoded URLs be dangerous?
Yes. Treat unknown decoded links carefully before opening them.