Dev
URL Encoder / Decoder
Encode text for use in URLs or decode URL-encoded strings back to readable text.
Output will appear here
Frequently asked questions
What's the difference between encodeURIComponent and encodeURI?
encodeURIComponent encodes special characters like ?, &, =, and # that have meaning in URLs. We use encodeURIComponent so the output is safe for use as a query parameter value. encodeURI preserves those characters.
Why are spaces encoded as %20?
Spaces are not valid in URLs. encodeURIComponent converts spaces to %20 (the percent-encoded form). Some systems also accept + for spaces in query strings, but %20 is the standard way.
Can I encode a full URL?
For encoding a full URL, use the 'Encode' mode on the entire URL. But note that encodeURIComponent will encode the :// and / characters too — for complete URL encoding, you'd typically encode just the query parameter values, not the whole URL structure.
Quickly encode text for safe use in URLs, or decode percent-encoded strings back to their original form. Uses encodeURIComponent/decodeURIComponent under the hood.
Essential for web developers working with query parameters, form submissions, or API calls. All processing happens client-side — nothing is sent to a server.