What is URL encoding used for?
It safely represents spaces and special characters inside query strings and URLs.
Encode special characters for URLs or decode percent-encoded text instantly in the browser.
Use it when a URL, downloaded file name or copied web value contains percent-encoded text such as %20, %C4%AF or other hard-to-read symbols. Decoding it can reveal the real readable text, while encoding helps make links, query values and file names safe to paste into a URL.
Questions
It safely represents spaces and special characters inside query strings and URLs.
Yes. Switch the mode to decode.
No. Encoding and decoding happen locally.