URL Encode

URL encoding, also called percent-encoding, replaces characters that aren't safe inside a URL, like spaces, ampersands, and accented letters, with a percent sign followed by a hex code. Browsers and servers rely on this so a URL is parsed correctly instead of breaking apart at the wrong character. Without it, a search query containing a space or an ampersand could be misread as a separate parameter, or a link could simply fail to load.

It's useful whenever a value needs to travel safely inside a URL: search query parameters, redirect links that contain another full URL, API testing where a parameter has spaces or symbols, and building shareable links that include user-entered text.

Developers testing API endpoints and query strings, support teams debugging broken links sent by customers, and anyone building a URL by hand that needs to include spaces, symbols, or another full link as a parameter.

It encodes exactly the text you paste. For a full URL, it's usually better to encode only the parts that need escaping, such as a query value, rather than the entire address.

The text likely has an incomplete percent code, such as a trailing percent sign or invalid hex characters after it, which can't be converted back into a character.

No. Encoding and decoding happen entirely in your browser.

No. URL encoding protects characters inside a URL. HTML escaping protects characters so they display safely inside a web page instead of being read as markup.