Trình mã hóa URL

URL encoding, also called percent encoding, replaces characters that are not allowed or have a special meaning in a URL with a percent sign and two hex digits. For example a space becomes %20 and an ampersand becomes %26.

Paste your text into the input box, choose a mode and click Encode. The percent-encoded result appears in the output box, ready to copy and use in a link, a redirect or an API request.

Component encodes almost everything, including slash, question mark, equals and ampersand, and matches JavaScript encodeURIComponent. Full URL keeps those structure characters and matches encodeURI. Form uses plus for spaces and matches HTML form data.

Use it for a single value that goes inside a URL, such as a query parameter value, a path segment or a redirect target. It makes sure characters like & and = in the value cannot break the URL.

Use it when you have a whole address that only contains a few unsafe characters, like spaces or non-English letters, and you want to keep the colon, slashes, question mark and ampersands in place.

The application/x-www-form-urlencoded format, used by HTML forms and many APIs, writes spaces as plus signs instead of %20. Choose Form mode when you build a POST body or a query string in that format.

Spaces are not allowed in URLs. In a path or standard percent encoding a space is %20. In form data it is a plus. Both are valid in their own context, but they are not interchangeable everywhere.

Yes. Characters are converted to UTF-8 bytes first, so an accented letter, Arabic text, Chinese characters or an emoji become a series of percent-encoded bytes that servers can read back correctly.

Letters, digits and the characters hyphen, underscore, period and tilde are always safe and stay as they are. Component mode also leaves a few extra symbols untouched, as the standard function does.

No. The encoding is done in your browser, so private links, tokens and parameters are never sent or stored.

Use the URL decoder. It turns %20, %2F and similar codes back into normal text and can list the query parameters of a link as a table.

Yes. It is free with no sign-up and works on phones, tablets and computers.