What is the difference between encodeURI and encodeURIComponent?

encodeURI encodes a full URI but preserves characters like : / ? & =. encodeURIComponent encodes everything including those characters. This tool lets you choose which mode to use.

Does this handle Unicode characters?

Yes. The tool correctly encodes multi-byte Unicode characters into their UTF-8 percent-encoded form, supporting all international characters.

Is my URL data private?

Yes. All encoding and decoding happens locally in your browser. No data is transmitted to any server.

URL Encode & Decode Online Free

Convert special characters in URLs to their percent-encoded equivalents, or decode percent-encoded URLs back to readable text. This free tool runs in your browser for instant, private URL encoding.

Open URL Encoder

How It Works

Encode:
  Input:  https://example.com/search?q=hello world&lang=en
  Output: https%3A%2F%2Fexample.com%2Fsearch%3Fq%3Dhello%20world%26lang%3Den

Decode:
  Input:  %E4%BD%A0%E5%A5%BD
  Output: 你好

Common Use Cases

Encoding query parameters for REST API calls
Decoding URLs copied from browser address bars
Preparing redirect URLs for OAuth flows
Encoding form data for application/x-www-form-urlencoded submissions

Frequently Asked Questions

What is the difference between encodeURI and encodeURIComponent?: encodeURI encodes a full URI but preserves characters like : / ? & =. encodeURIComponent encodes everything including those characters. This tool lets you choose which mode to use.
Does this handle Unicode characters?: Yes. The tool correctly encodes multi-byte Unicode characters into their UTF-8 percent-encoded form, supporting all international characters.
Is my URL data private?: Yes. All encoding and decoding happens locally in your browser. No data is transmitted to any server.