Trình giải mã URL – Giải mã phần trăm trực tuyến

URL decoding, also called percent decoding, converts sequences such as %20 or %C3%A9 back into the characters they stand for. URLs can only carry a limited set of safe characters, so everything else is encoded as a percent sign followed by two hex digits. Decoding reverses that so people can read the original text.

Paste the encoded URL or text into the input box. The decoded result appears in the output box right away, with no button to press. You can then copy it or download it as a text file.

%20 is a space, %2F is a slash, %3A is a colon, %26 is an ampersand, %3D is an equals sign and %3F is a question mark. These are the characters that most often appear encoded inside query strings and redirect links.

URL encoding turns unsafe characters into percent codes so they can travel safely inside a link. URL decoding does the opposite and restores the readable text. Use the URL encode tool to build safe links and this tool to read them.

In HTML form data and many query strings, a plus sign stands for a space, while in a path it is just a plus. This tool has an option to treat plus signs as spaces. Turn it on for form-style query strings and off when you need to keep literal plus signs.

The error appears when the text contains a percent sign that is not followed by two valid hex digits, or when the bytes do not form valid UTF-8. A stray % in plain text is the most common cause. Fix or remove the broken sequence and the result will appear.

Yes. When your text contains a query string, a table lists every parameter name and its decoded value. This makes long tracking links, search URLs and API calls much easier to read and debug.

Yes. Characters outside plain ASCII are encoded as UTF-8 byte sequences, for example %C3%AB for the letter e with diaeresis. The decoder reads those sequences correctly, so accented letters, non-Latin scripts and emoji come back as normal text.

Double encoding happens when already encoded text is encoded again, so %20 becomes %2520. If your result still contains percent codes after decoding, paste the output back into the input and decode it a second time.

It decodes every percent sequence in the text, including reserved characters such as %2F and %3F. That is ideal for reading a value, but it means a fully decoded URL may no longer be safe to use as a link. Keep the encoded version for sharing.

No. Decoding runs entirely in your browser, so links that contain tokens, emails or private paths are never uploaded or stored.

Yes. It is free with no sign-up and no limits, and it works on phones, tablets and desktop browsers.