You can enter bytes in any of the following forms:
Embedded
Raw ASCII text with UTF-8 encoded characters represented by backslash escapes:
Hexadecimal: \x12 \x34 \x56 \x78
Decimal: \d123 \d45 \d67
Octal: \123 \45
Binary: \b01010101 \b10101010 \b11110000
Freeform numeric
Space separated bytes in one or more of the following numeric forms:
Hexadecimal: 0x12 0x34 0x56 0x78 or x12 x34 x56 x78
Decimal: 123 45 67
Octal, using either backslashes or leading 0s: \123 \45 or 0123 045
Binary: 0b01010101 0b10101010 0b11110000
Hexadecimal
A hex dump. Bytes are extracted two characters at a time, with
all whitespace ignored, e.g. 123456789ABCDE.
Binary
Space-separated list of binary numbers, e.g. 01010101 10101010 11110000
UTF-8 interpreted as Windows-1252
Raw UTF-8 encoded text, but interpreted as Windows-1252. For
example, if your source viewer only supports Windows-1252, but the
page is encoded as UTF-8, you can select text from your source
viewer, paste it here, and see what the characters really are.