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URL encode online
Encode spaces, symbols, and reserved characters before placing a value into a URL or query string. Component mode is best for individual parameter values.
Examples for this search
Encode a redirect URL for a callback parameter.
Encode search text before adding it to a query string.
Switch to full URL mode for assembled URLs.
Component mode uses encodeURIComponent and decodeURIComponent. Full URL mode tries to preserve the URL structure while encoding or decoding path and query values.
What this url encoder decoder does
Use this URL encoder decoder when query parameters, OAuth callbacks, redirect URLs, or copied request strings contain spaces, percent escapes, plus signs, or double-encoded values.
Common use cases
- Encode a single query parameter value before adding it to a URL.
- Decode an OAuth redirect URL to inspect nested callback parameters.
- Parse a query string into a key/value table.
- Spot values that appear to be encoded more than once.
Accepted input formats
hello world
https://example.com/callback?next=%2Fapp
?utm_source=docs&redirect=%2Fapp
How it works
Component mode uses encodeURIComponent and decodeURIComponent. Full URL mode tries to preserve the URL structure while encoding or decoding path and query values.
Common mistakes
- Encode query parameter values, not an entire URL, when building a query string.
- A plus sign is a literal plus in many contexts; form encoding may treat it as a space.
- If decoding once still leaves percent escapes, the value may be double-encoded.
Frequently asked questions
Should I use encodeURI or encodeURIComponent?
Use component mode for query parameter values. Full URL mode is for already assembled URLs.
Can this parse query strings?
Yes. Paste a URL or query string and Toolvert shows the parsed parameters.
Does it send URLs to a server?
No. Encoding, decoding, and parsing happen locally.