EncodeIn browser

URL encode/decode

Fast work with URLs, query strings and percent-encoding without network requests.

Use cases
Query paramsRedirect URLsWebhook payloadsUTM and callback URLs
Mode:
Target:
Source string
Characters: 0Lines: 0% sequences: 0
Result

How it works

Whole URL uses encodeURI/decodeURI and keeps URL separators. Component uses encodeURIComponent/decodeURIComponent and encodes the full string. Query works like component, but encode turns spaces into + and decode treats + as a space.

When to use it

Use it for query params, callback URLs, redirect_uri values, webhook payloads, UTM strings and debugging percent-encoded values in logs or API requests.

How to use it

  1. 1Choose Encode or Decode.
  2. 2Choose the target: whole URL, component or query.
  3. 3Paste the string and run the processor.
  4. 4Copy the result or swap input and output.

Questions

Is the URL sent to a server?

No. Encode and decode run through built-in browser APIs directly on your device.

How is whole URL different from component?

Whole URL keeps separators such as : / ? & = and only encodes unsafe parts. Component encodes the entire string, so it is the right choice for a query parameter value.

Why can decode show an error?

Percent-encoding must contain pairs such as %2F. If the input has a lone % or a broken UTF-8 sequence, the browser cannot decode it safely.

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