encodeURIComponent encodes all characters except letters, digits and - _ . ! ~ * ' ( ). Use this for encoding individual query parameter values.
encodeURI encodes everything except characters that are legal in a complete URI (like /, ?, #, &). Use this for encoding full URLs.
URL Encoder allows you to transform plain text into a format that is safe for transmission over the web. This free online percent encoding tool is perfect for creating query parameter values or encoding full web addresses to prevent broken links. It utilizes the browser's native encoding functions to handle everything from standard spaces to multi-byte Unicode characters with perfect accuracy.
This percent escape generator provides two primary modes of operation: encodeURIComponent for individual keys and values, and encodeURI for complete URLs. Whether you need to handle accented letters or complex emoji, this URL safe string converter ensures that every character is represented by its correct %HH hex sequence. All processing is done locally, meaning your data is never sent to any external server.
encodeURI keeps URL-structural characters (/, ?, #, &) literal - use it for whole URLs you want to remain valid. encodeURIComponent escapes everything except a small set of unreserved characters - use it for individual query parameter values or path segments.
%20 is the canonical RFC 3986 encoding of a space and works in every part of a URL. + only means space inside application/x-www-form-urlencoded data - toggle the form-encoding option to switch.
They are first converted to UTF-8 bytes and each byte is then percent-encoded. So é becomes %C3%A9 and 😀 becomes %F0%9F%98%80, which is what every modern server expects.
No - encoding uses the browser’s native encodeURI / encodeURIComponent. Nothing leaves the page.
Whether you are building a tracking link or preparing an API request, this free online URL encoder provides fast and reliable results.
This URL Encoder follows 📖 Reference: RFC 3986 - Uniform Resource Identifier (URI): Generic Syntax