URL Encoder vs URL Decoder: How to Handle Special Characters

Why URLs Break

A URL can only contain a limited set of safe characters. When you put a space, an ampersand, a question mark, or a non-English character into a URL, it can break — the browser may cut the link short or misread a parameter.

URL encoding (also called percent-encoding) solves this by replacing unsafe characters with a percent sign and a two-digit code.

What URL Encoding Does

Encoding converts each unsafe character into a safe equivalent:

Character	Encoded
space	%20
&	%26
/	%2F
?	%3F
=	%3D

So a search for "sales & marketing" becomes sales%20%26%20marketing.

URL Encoder vs URL Decoder

They are opposites:

• Encoder — takes readable text and makes it URL-safe. Use it when building a link or sending data in a query string.
• Decoder — takes an encoded URL and turns it back into readable text. Use it when a link looks like %20%26%20 and you want to see what it says.

Do it either way with the URL Encoder and URL Decoder.

When You Need Each

Encode when:

• Passing a search term or user input into a query string
• Embedding a URL inside another URL
• Handling spaces or non-English characters in a link

Decode when:

• Debugging a link full of % codes
• Reading the true value of a parameter
• Checking what a redirect actually points to

Encoding Is Not Encryption

This trips people up. Percent-encoding is formatting, not security. Anyone can decode it instantly. Never hide secrets in a URL expecting them to stay secret.

That is also why you should not confuse it with Base64, which is a different encoding for data, not URLs. Try the Base64 Encoder and Base64 Decoder to compare.

FAQ

What is the difference between URL encoding and decoding? Encoding makes text URL-safe by replacing special characters; decoding reverses it back to readable text.

Is URL encoding the same as Base64? No. URL encoding is percent-encoding for link safety. Base64 encodes binary data into text.

Does encoding secure my data? No. It is reversible by anyone. Use HTTPS and proper auth for real security.

Will spaces always become %20? Yes, and a space in a query string is sometimes shown as +, which is the form-encoding equivalent.

Fix broken links and read encoded URLs instantly with the free URL Encoder and URL Decoder.