How to identify encoding from hex values?

问题

I have text on a website that displays like that: o¨ instead of ö

I extracted the text out of the CMS and analysed it's hex values:

• the ö's that are displays correctly have c3 b6 - UTF-8
• the ö's that are displayed incorrect have 6f cc 88

I couldn't find out what encoding this is. What's a good way to identify the encoding?

回答1:

6F is the UTF-8 (ASCII) encoding of "o", nothing spectacular.
CC 88 is the UTF-8 encoding of U+0308, COMBINING DIAERESIS.

You're simply looking at the decomposed form of the o-umlaut. A combining diaereses character should visually be rendered, well, combined with the previous character. If your system doesn't do that, it means it doesn't treat Unicode correctly, and/or the font you have chosen is somewhat broken. Perhaps you have to normalise your strings into the composed Unicode form instead for your system to handle it correctly.

来源：https://stackoverflow.com/questions/38303793/how-to-identify-encoding-from-hex-values