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Developer tools

URL Encoder/Decoder

Percent-encode and decode URL components safely.

How it works

  1. 1Pick Encode or Decode.
  2. 2Paste your string.
  3. 3Copy.

Use cases

  • Building query strings safely
  • Decoding ugly URLs from logs
  • Debugging API request shapes

Frequently asked questions

What is the difference between encodeURI and encodeURIComponent?

This tool uses encodeURIComponent, which percent-encodes every reserved character. Use it when embedding a single value inside a URL.

Read the guide
When and why to URL-encode a string
Percent-encoding is straightforward in theory and quietly tricky in practice. Here is what the encoder does and the three real-world traps.

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