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URL Encode / Decode

Encoder

Free URL encode and decode for query values and other URL components - spaces become %20; paste a value, not a full URL, when you need to keep structure intact.

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Input
Output
caf%C3%A9%20%26%20tea

Encode or decode one value with encodeURIComponent (100,000-character limit). One mode at a time; plus signs are not treated as spaces.

See more about the URL Encode / Decode

Prefer this for query values, not whole URLs.

Examples

Decode a query string value

name%3DAda%26age%3D36 → name=Ada&age=36

Only percent escapes are decoded. A plus sign stays a plus, so write a space as %20.

Malformed escape

100% → Invalid URI component or malformed UTF-8 percent sequence.

A lone % is not a valid escape. Encode the value first, so the % becomes %25.

Key features

  • Decode and encode modes
  • Percent decoding of single values
  • Copy output
  • Error on malformed escapes

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Quick answers for URL Encode / Decode

Should I paste a complete URL?
Encode individual component values when you need to preserve URL structure. This page uses encodeURIComponent, which also escapes URL separators.
Does decoding turn plus into a space?
No. A plus sign stays a plus sign. Spaces encode as %20.
What happens with invalid input?
Malformed percent escapes and invalid UTF-8 sequences produce an error. Input is limited to 100,000 characters.
When should I use Base64 instead?
Use URL Encode for query and path component values. Use Base64 Encode/Decode for binary-safe text transport, and JWT Decoder for compact tokens.