URL Encoder & Decoder — Free Online
Encode or decode URLs and query strings — instant and private.
How to Use URL Encoder/Decoder
Choose Encode or Decode mode
Paste your text or URL
Copy the encoded/decoded output instantly
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No upload wait time. Results in seconds
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About URL Encoding
URL encoding (percent-encoding) replaces unsafe ASCII characters in a URL with a % followed by two hexadecimal digits. This is essential when building query strings, API parameters, or sharing URLs that contain special characters like spaces, ampersands, or non-Latin text.
Common Encoded Characters
- Space → %20 (or + in form data)
- & → %26
- = → %3D
- ? → %3F
- @ → %40
Frequently Asked Questions
What characters does URL encoding replace?
URL encoding replaces unsafe characters like spaces, &, =, ?, #, and non-ASCII characters with percent-encoded equivalents (e.g. %20 for space).
What is the difference between encodeURI and encodeURIComponent?
encodeURI encodes a full URL but preserves valid URL characters like : / ? #. encodeURIComponent encodes everything except letters, digits, and - _ . ~ — making it safe for individual query parameter values.