One "alternative" encoding I've tried is just saving an HTML file as a UTF-16 file, then just simply save the binary data as a UTF-16 string in a javascript blo

One "alternative" encoding I've tried is just saving an HTML file as a UTF-16 file, then just simply save the binary data as a UTF-16 string in a javascript block. A few characters need to be escaped, such as quotation mark, backslash and newline, as well as unmatched surrogate pairs. The unmatched surrogate pairs eat up 12 bytes instead of 2 bytes when you write them as \uXXXX.