URL Encoder/Decoder
About this Tool
URL encoding, also known as percent-encoding, converts characters into a format that can be safely transmitted over the Internet. This tool allows you to both encode and decode URL components, solving problems with special characters breaking URLs in browsers or servers.
How does it work? It replaces unsafe characters with % followed by their hex code, using encodeURIComponent for components or encodeURI for full URLs.
- Enter a string (like a search query or URL parameter) into the input area.
- Click "Encode" to convert it into a URL-safe format.
- To reverse the process, enter an encoded string and click "Decode".
- The output will appear in the result area.
- Building query strings for APIs with user input.
- Encoding file names in download links.
- Debugging malformed URLs from logs.
- Uses the standard `encodeURIComponent()` and `decodeURIComponent()` functions.
- Essential for working with URL query strings and parameters in web development.
- Provides error feedback for malformed strings during decoding.
URL encoding follows RFC 3986, reserving characters like ?, &, = for structure. The concept ensures unambiguous parsing by escaping others, preventing injection or misinterpretation.
What's the difference from encodeURI?
encodeURIComponent escapes more chars for query params.
Does it handle spaces?
Yes, spaces become %20.
Is it safe for full URLs?
For components yes; use encodeURI for whole URLs.
All calculations and data processing for this tool are performed locally in your browser. We do not send any of your data to our servers, ensuring your information remains private and secure.