URL Encoder/Decoder

Encode or decode special characters in URLs.

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URL Encoder and Decoder

URL encoding (also called percent encoding) replaces unsafe characters in URLs with a percent sign followed by their hexadecimal value. This ensures that URLs are transmitted correctly across the internet, as certain characters have special meanings in URL syntax.

When to Use URL Encoding

URL encoding is necessary when including special characters in query parameters, form data, or any part of a URL. Characters like spaces, ampersands, question marks, and non-ASCII characters must be encoded to prevent misinterpretation by web browsers and servers.

Frequently Asked Questions

What characters need to be URL encoded?
Characters like spaces (become %20 or +), ampersands (&), question marks (?), hash symbols (#), and all non-ASCII characters need encoding in URLs.
What is the difference between encodeURI and encodeURIComponent?
encodeURI encodes a full URI preserving special URL characters, while encodeURIComponent encodes everything except letters, digits, and a few special characters.