Sometimes the simplest information is difficult to find. Today I was searching for the HTML entities for French characters. Fortunately, I found the following resource French Encoding and Language Tags from Penn State.
Here’s an example of the information available on the Teaching with Technology site:
Lowercase Vowels Ã à (225) Ã¢ â (226) Ã¤ ä (228) Ã¨ è (232) Ã© é (233) Ãª ê (234) Ã« ë (235) Ã® î (238) Ã¯ ï (239) Ã´ ô (244) Å“ œ (156) Ã¹ ù (250) Ã» û (251) Ã¼ ü (252) Ã¿ ÿ (255)