URL Encode
Percent-encode a URL component, or encode a form value where spaces become +. This tool does not parse or navigate to full URLs.
Conversion runs only in this browser. Input and output are not uploaded.
Input size: 0 B.
How this converter works
Component mode uses URI-component percent encoding; form mode additionally represents spaces as plus signs.
- Component mode is the default.
- Literal plus signs become %2B in both modes.
- Unpaired UTF-16 surrogates are rejected instead of crashing.
Frequently asked questions
Does this encode a complete URL?
No. It encodes text for a URL component or form value without parsing a URL.
Does it upload the value?
No. Encoding happens in this browser only.
Using this tool
Percent-encode a URL component
Encode text as a URL component by default, or as a form value when the form mode is selected.
Input and output
Example: component mode changes `a b+c` to `a%20b%2Bc`; form mode uses `a+b%2Bc`.
Important behaviour
Component mode preserves the distinction between a literal plus and a space; form mode follows form-value conventions.
Keep in mind
The route encodes text only. It does not parse, visit, or fetch a URL.
Conversion is performed in the browser. Copying or downloading happens only when you choose those actions.