Developer · free local utility
Safely transform one URL component, query value, path segment, or text fragment to and from percent-encoding.
Paste a component or encoded value. Encoding uses encodeURIComponent; decoding also treats plus signs as spaces.
This encodes a component, not an entire URL-aware structure. Encoding a complete URL will also escape its separators.
Always verify the result in the system where you will use it. The page intentionally avoids accounts, uploads, and claims that go beyond the calculation it performs.
Usually no. Use it for a query value or path segment, because full-URL separators such as : / ? and & will also be encoded.
HTML form query encoding commonly uses + for a space, so the decoder normalizes that convention before percent-decoding.
No. It performs text transformation only and never opens, checks, or submits the result.