UTF-8 Decoder

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Decode hex-encoded UTF-8 bytes back to readable text.

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About UTF-8 Decoder

Paste space-separated hex bytes representing a UTF-8 encoded string and decode them back to readable text using the browser's TextDecoder API. Useful for inspecting binary data, debugging encoding issues, or converting raw byte arrays to strings.

How to use

  1. Paste space-separated hex byte values (e.g. 48 65 6C 6C 6F) into the input panel.
  2. The decoded text appears in the output panel instantly.
  3. Click Copy to copy the result.

More Encoding / Decoding

UTF-8 Encoder

Show the UTF-8 byte sequence (hex) for any text string.

Base64 Decoder

Decode Base64-encoded text back to its original string.

Hex to ASCII / Text

Convert hex byte pairs to a readable ASCII/text string.

Frequently Asked Questions

FAQs about UTF-8 Decoder

What input format does this tool expect?

Enter hex byte values separated by spaces, e.g. "48 65 6C 6C 6F". Each byte is two hex characters (00–FF). You can also use no separators or other whitespace.

What happens if the bytes are not valid UTF-8?

The TextDecoder API will replace invalid byte sequences with the Unicode replacement character (U+FFFD). You will see in the output where invalid sequences occur.

Can I paste hex without spaces?

No, this tool requires space-separated hex pairs. If your data is a continuous hex string, insert spaces every two characters before pasting.

What is TextDecoder?

TextDecoder is a browser built-in API that decodes a byte array (Uint8Array) into a string using a specified encoding. It supports UTF-8 and many other encodings.

Is my data safe?

Yes. All decoding is done locally in your browser using the built-in TextDecoder API.