URL Encoder & Decoder

Percent-encode and decode URI components.

Input:

Output:

About URL Encoder & Decoder

RFC 3986 compliant URL encoder and decoder handling percent-encoding for query parameters, path components, form payloads, and non-ASCII characters.

Dual encoding engines: encodeURIComponent (for query values) and encodeURI (for full URL strings).
Complete UTF-8 byte sequence percent-encoding for multi-byte Unicode characters and emojis.
Live decoding of malformed or obfuscated URI strings with clear error detection.
Space encoding toggle between standard percent '%20' and application/x-www-form-urlencoded '+'.

Select Encode or Decode Mode: Choose whether to percent-encode plain text or decode percent-escaped URLs.
Paste URL or Query String: Input your parameter string, endpoint URL, or JSON payload into the editor.
Copy Safe URL String: Review the encoded or decoded output and copy it for use in HTTP requests or API clients.

encodeURI preserves URL structure characters like / ? : @ &, whereas encodeURIComponent escapes them, making it safe for query parameters.

A mechanism where reserved or unsafe characters are replaced by a '%' followed by their two-digit hexadecimal ASCII/UTF-8 byte value.

'%20' is the strict RFC 3986 standard for URL paths and queries, while '+' is used in legacy application/x-www-form-urlencoded forms.

Yes, all encoding and decoding runs 100% locally in your browser memory without network logging.

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