URL Encoder & Decoder – Percent-Encoding RFC 3986 Tool

Encode special characters into percent-encoding (%20, %2F) or decode query strings and URIs safely offline in your browser.

Input URL or Text to Encode / Decode

Result

Why URL Encoding (Percent-Encoding) Matters

URLs can only contain a specific subset of ASCII characters (RFC 3986). Unsafe characters such as spaces, ampersands (&), question marks (?), slashes (/), and non-Latin UTF-8 characters must be escaped into hexadecimal percent notation (e.g. spaces become %20) so web browsers and API servers can parse query strings accurately.

Difference between encodeURI and encodeURIComponent

encodeURIComponent: Encodes all special characters including /, ?, &, and =. Use this when encoding individual query parameter values.
encodeURI: Preserves protocol delimiters like http:// and path slashes, encoding only spaces and unsafe characters in full web addresses.

Frequently asked questions

Is my data kept private?

Yes. URL encoding runs 100% locally in your web browser. Sensitive tokens or passwords in URLs are never logged or sent to any server.

Can this handle Unicode and non-English characters?

Yes. All UTF-8 international characters (Chinese, Japanese, Arabic, Cyrillic, emojis) are converted into standard RFC 3986 percent notation.

URL Encoder & Decoder – Percent-Encoding RFC 3986 Tool

Why URL Encoding (Percent-Encoding) Matters

Difference between encodeURI and encodeURIComponent

Frequently asked questions

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