URL Decoder
Paste a percent-encoded URL or query string and get the decoded, human-readable version. Handles malformed sequences gracefully.
Tip: Press Ctrl+Enter to decode.
What is URL decoding?
URL decoding reverses percent-encoding, converting sequences like %20 back to a space, %3D back to =, and %26 back to &.
When do you need to decode URLs?
- Reading server logs — log files often contain percent-encoded request paths and query strings.
- Debugging redirects — authentication flows and OAuth callbacks frequently embed percent-encoded URLs inside other URLs.
- Parsing query parameters — extract the original values from a copied URL before processing them in code.
Malformed sequences
If the input contains an invalid percent-sequence (like %GG), this tool attempts a best-effort decode and leaves the invalid sequence as-is, rather than failing completely.