URL Encoder / Decoder
Encode a URL or decode a percent-encoded URL string. Choose between full URL encoding (encodeURI) or component encoding (encodeURIComponent).
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Frequently Asked Questions
Quick answers to common questions
What is URL encoding?+
URL encoding (percent encoding) replaces characters that are not allowed in URLs with a % followed by two hexadecimal digits. For example, a space becomes %20, and & becomes %26.
When do I need to URL encode?+
Encode when passing special characters in query strings (?, &, =, spaces, accents, Unicode). Also encode when building API requests with user-supplied data to prevent injection or broken URLs.
What is the difference between encodeURI and encodeURIComponent?+
encodeURI encodes a complete URL — it does not encode characters like /, ?, &, # that have meaning in URLs. encodeURIComponent encodes a URL component (e.g. a query value) and encodes those characters too.