URL Encoder/Decoder for JavaScript
Free online url encoder/decoder with JavaScript code examples
Working with url encoder/decoder in JavaScript? Our free online url encoder/decoder helps JavaScript developers format, validate, and process data instantly. Below you will find JavaScript code examples using encodeURIComponent (built-in) so you can achieve the same result programmatically in your own projects.
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Open URL Encoder/DecoderJavaScript Code Example
const encoded = encodeURIComponent("Hello World! @#$");
console.log(encoded); // Hello%20World!%20%40%23%24
const decoded = decodeURIComponent(encoded);
console.log(decoded); // Hello World! @#$Quick Setup
Library: encodeURIComponent (built-in)
// Built-in global — no installation neededJavaScript Tips & Best Practices
- encodeURIComponent encodes individual parameters
- encodeURI encodes a full URL (preserves :, /, ?)
- Use URLSearchParams for building query strings