🌐⚡ Developer Tools

URL Encoder/Decoder

Encode and decode URLs for web use.

Enter a URL or encoded string to begin.

URL

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Free Online URL Encoder & Decoder

Encode and decode URLs with percent-encoding in your browser — no upload to any server and no account required. Handle special characters, query strings, and international characters correctly.

Developers build query strings that include special characters like &, =, and spaces. API integrators encode parameters before appending them to endpoints. SEO analysts decode encoded URLs in analytics reports to read the original parameters.

How to Use

1Paste your URL or string into the input.
2Click Encode to percent-encode special characters, or Decode to convert %XX sequences back.
3Copy the result.

Frequently Asked Questions

Is my data sent to a server?

No. Encoding uses JavaScript's encodeURIComponent and decodeURIComponent. Everything runs in your browser.

What is percent-encoding?

Percent-encoding replaces unsafe URL characters with a % followed by their hex value — e.g. space becomes %20.

Should I encode a full URL or just a parameter?

Encode individual query parameter values, not the entire URL. Encoding the full URL would break the protocol and domain separators.

What is the difference between encodeURI and encodeURIComponent?

encodeURI leaves structural URL characters (/, :, ?) intact. encodeURIComponent encodes everything except letters, digits, and - _ . ~. Use the latter for parameter values.