URL Encoder & Decoder

Encode texts and parameters to be URL-compliant or decode already masked URLs quickly and securely in your browser.

The result will be output here.

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Guide & best practices

URL Encoder and Decoder for percent-encoding

Convert text safely into URL-compliant strings and back – locally in the browser, with notes on reserved characters.

Useful for query parameters, API calls, redirect URLs and debugging wrongly encoded links.

Enter text or a URL and choose encode/decode; Balou applies percent-encoding locally and shows the result.

Encode parameter values with encodeURIComponent, whole URLs with encodeURI and mind reserved characters like & and ?.

What is the difference between encodeURI and encodeURIComponent?

encodeURI leaves URL structure characters like / ? & intact, encodeURIComponent encodes those too – ideal for single parameter values.

Why %20 instead of +?

%20 is the correct percent-encoding for a space in the path; + means a space only in application/x-www-form-urlencoded.

What are reserved characters?

Characters with special meaning in URLs like : / ? # [ ] @ & = + that must be encoded depending on context.

Is my data sent anywhere?

No, the encoding runs locally in the browser.