What Is a URL Encoder / Decoder?
A URL Encoder / Decoder is an essential developer utility that converts non-ASCII or reserved characters into percent-encoded format (`%20` for spaces, `%26` for `&`, `%3F` for `?`) based on standard RFC 3986 specifications. This ensures URLs can be transmitted reliably over HTTP networks without syntax parsing errors.
Difference Between `encodeURIComponent` and `encodeURI`
- Encode Component (`encodeURIComponent`): Encodes all reserved characters including `:`, `/`, `?`, `=`, and `#`. Designed specifically for query string parameter values.
- Encode Full URL (`encodeURI`): Preserves structural URL delimiters (`https://`, domain `/`, `?`, `=`) while converting spaces and unencoded symbols.
- Decode URL (`decodeURIComponent`): Converts percent-encoded hex sequences back to readable UTF-8 text strings.
Frequently Asked Questions (FAQ)
What is percent-encoding in URLs?
Percent-encoding is a mechanism for encoding unprintable or reserved characters in a Uniform Resource Identifier (URI) using % followed by 2 hexadecimal digits representing their ASCII code.
Is my data private when using this tool?
Yes, 100%. All processing occurs locally inside your web browser. No URLs or input strings are ever transmitted to an external server.