URL Encoder / Decoder
Convert spaces, symbols and non-ASCII text into URL-safe encoded values locally.
Inspect URL percent encoding
Encode uses encodeURIComponent, while Decode reverses valid percent-encoded sequences.
Interpret the result
The result prepares query values, path fragments and redirect parameters without manual hexadecimal conversion.
Catch common problems
Double encoding, stray percent signs, plus-sign ambiguity and decoding a full URL as one component can change meaning.
How to interpret URL percent encoding
URL structure and context are not validated; reserved characters behave differently by component and invalid sequences may fail.
Common problems and next steps
Double encoding, stray percent signs, plus-sign ambiguity and decoding a full URL as one component can change meaning.
Frequently asked questions
What does the URL percent encoding check cover?
Encode uses encodeURIComponent, while Decode reverses valid percent-encoded sequences.
How should I use the result?
Encode components separately, decode only trusted text and compare the result before production use.
What are the limits of this tool?
URL structure and context are not validated; reserved characters behave differently by component and invalid sequences may fail.