What is URL encoding (percent encoding)?

URL encoding replaces unsafe ASCII characters with a % followed by two hexadecimal digits. Spaces become %20 (or + in some contexts), & becomes %26, = becomes %3D, # becomes %23. RFC 3986 reserves characters like / ? # & for structural use in URLs — any of these in query values must be percent-encoded.

When should I use URL encoding?

Encode: query string values containing special characters (search terms, addresses, names with spaces or symbols). Decode: when processing URL parameters, reading query strings from logs, or displaying user-submitted URL data. Most frameworks handle this automatically, but it's useful for manual URL construction, curl commands, and API testing.

URL Encoder / Decoder

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URL Encoder / Decoder

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