Multiple Base64 -> hexadecimal string decoder

This form converts list of base64 strings (one string per line, can be exported from Libre/OpenOffice Calc as CSV file from sheet with single columm or just by selection) to list of hex strings.
Each output line contains hex string (if conversion succeded) and optional comment after comma if conversion failed or unexpected characters are found that can be treated as CSV file with two columns and imported back to Calc ("Paste Special" option and marking comma as separator in text import dialog works too).

List of base64 strings (one per line = 1 CSV column):

Options:

0x separator for output
Use lowercase hex characters

Decoded data (hexadecimal) + comment, two CSV columns