URL Encoder/Decoder
Percent-encode URLs containing special characters, or decode percent-encoded URLs back to readable text.
How to Use
Choose Encode or Decode. In Encode, you can additionally pick component (encodes ?, &, =) or full URL (preserves URL syntax).
Paste or type your text into the input. Results update live as you type.
Copy the result with one click, or swap input and output to chain conversions.
FAQ
What's the difference between encodeURI and encodeURIComponent?
encodeURI keeps URL delimiters (: / ? # & =) intact when encoding a whole URL. encodeURIComponent encodes those too, which is what you want for query parameter values. For most query string work, use component.
Why do Korean or non-ASCII characters become %EA%B0%80?
That's the expected UTF-8 percent-encoded form. Decoding the result returns the original characters.
Decoding throws an error.
You probably have an invalid percent-encoded sequence (e.g. %ZZ, %A). Fix the malformed parts and try again.
Should + become a space?
In application/x-www-form-urlencoded form data, + means space. In standard URL decoding (decodeURIComponent), + stays as +. Toggle the "+ as space" option when decoding form data.
Is anything sent to a server?
No. All encoding and decoding happens in your browser. Input never leaves the page.
