URL input
Web encoding
URL Encoder Decoder
Encode full URLs, individual components and form values; decode percent-encoded Unicode; parse absolute URL parts and inspect repeated or empty query parameters directly in your browser.
percent encoding
Parsed URL
URL parts
URL parts are shown for absolute URLs with a scheme and host. Decoded output is parsed before encoded input.
Protocol
Host
Pathname
Query string
Fragment
Origin
Query parameters
| Name | Value | Encoded name | Encoded value |
|---|
Reserved and commonly encoded characters
| Character | Meaning | Encoded |
|---|---|---|
| space | Word separator | %20 / + |
| % | Percent-encoding marker | %25 |
| & | Query parameter separator | %26 |
| = | Query name/value separator | %3D |
| ? | Query string start | %3F |
| # | Fragment start | %23 |
| / | Path separator | %2F |
| : | Scheme separator | %3A |
| + | Plus sign or form space | %2B |
URL encoding notes
Full URLUse full URL mode to preserve syntax such as : / ? & = # while encoding unsafe characters.
URL componentUse component mode for one query value, parameter name, path segment or fragment value.
Form encodingapplication/x-www-form-urlencoded represents spaces as +; a literal plus must be encoded as %2B.
Double encodingIf an existing % becomes %25, the value may have been encoded twice.
Popular URL encoding examples
URL encoder decoder FAQ
What is URL encoding?
URL encoding, or percent-encoding, replaces unsafe characters with % followed by two hexadecimal digits representing UTF-8 bytes.
Should I encode a full URL or a component?
Use full URL mode to preserve URL structure. Use component mode for a query value, name, path segment or fragment value.
Why does a space sometimes become +?
HTML form encoding represents spaces as +. Normal percent-encoding represents them as %20.
Why does decoding fail on a lone percent sign?
Every percent sign in encoded input must be followed by two hexadecimal digits. A literal percent sign is encoded as %25.