Developer Tools

URL Encoder and Decoder

Safely encode text for a URL component or decode percent escapes back to readable text.

Browser-only processingYour files are processed locally in your browser and are never uploaded to our servers.

Browser-only processing

What URL Encoder and Decoder does

Component encoding is appropriate for query values and path segments; encoding an entire URL can also escape structural characters.

Supported formats or input: Accepts plain Unicode text and percent-encoded URL text.

How to use URL Encoder and Decoder

  1. Paste the text or URL component.
  2. Choose encode or decode.
  3. Copy the transformed value and test it in context.

Example and processing method

Example: Encoding summer sale & shoes as a query value produces summer%20sale%20%26%20shoes.

The tool uses standards-based URI component conversion and reports malformed percent sequences.

Common mistakes and limitations

Common mistake: Avoid double-encoding an already encoded value, which turns %20 into %2520.

The tool does not test whether a destination URL exists or is safe.

Privacy

Values remain in the browser.

No registrationLocal processingClear output

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Frequently asked questions

Should I encode a full URL or one parameter?

Usually encode individual parameter values so separators such as : / ? and & retain their structural meaning.

Why does decoding fail?

A percent sign must be followed by two valid hexadecimal characters.