<Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> UTF - 8 is a variable width character encoding capable of encoding all 1,112,064 valid code points in Unicode using one to four 8 - bit bytes . The encoding is defined by the Unicode standard, and was originally designed by Ken Thompson and Rob Pike . The name is derived from Unicode (or Universal Coded Character Set) Transformation Format--8 - bit . </P> <P> It was designed for backward compatibility with ASCII . Code points with lower numerical values, which tend to occur more frequently, are encoded using fewer bytes . The first 128 characters of Unicode, which correspond one - to - one with ASCII, are encoded using a single octet with the same binary value as ASCII, so that valid ASCII text is valid UTF - 8 - encoded Unicode as well . Since ASCII bytes do not occur when encoding non-ASCII code points into UTF - 8, UTF - 8 is safe to use within most programming and document languages that interpret certain ASCII characters in a special way, such as "/" in filenames, "\" in escape sequences, and "%" in printf . </P> <P> UTF - 8 has been the dominant character encoding for the World Wide Web since 2009, as it's most popular in every country, and as of April 2018 accounts for 91.2% of all (and 95.4% of top 1,000 highest ranked) Web pages (some of which are simply ASCII, a subset of UTF - 8; the next-most popular multibyte encodings, Shift JIS and GB 2312, have 0.6% and 0.5% respectively). The Internet Mail Consortium (IMC) recommended that all e-mail programs be able to display and create mail using UTF - 8, and the W3C recommends UTF - 8 as the default encoding in XML and HTML . </P>

Where are the ascii characters found in the utf-8 code points