URL Encoder/Decoder

URLs may only contain a restricted set of ASCII characters. To include anything else — a space, a non-Latin character, an ampersand inside a query value — the byte must be percent-encoded as %XX where XX is the hexadecimal byte value. URL encoding (also called percent-encoding, RFC 3986) is what makes it possible to put a Hindi search query, a JSON blob, or a path with spaces inside a query string without breaking the URL grammar.

This tool encodes and decodes URL components in your browser. It supports both full-URL encoding (preserving reserved characters such as / and ?) and component encoding (which escapes everything that is not a letter, digit or unreserved symbol). Pick the right mode based on whether you are constructing a complete URL or a single query parameter.

1. Choose Encode to escape characters into percent-form, or Decode to reverse the process.
2. Pick component-mode for query parameter values, or full-URL mode if your input is an entire URL.
3. Paste the source string and read the result instantly.
4. Copy the result with the button on the output panel.

• Embedding a search term containing spaces or special characters into a query string.
• Constructing redirect URLs that round-trip a state value safely.
• Decoding percent-encoded paths from server access logs.
• Building OAuth2 authorization URLs whose state and redirect_uri parameters must be encoded.