The solution (more of a workaround) to this is to cut the font to just JIS X 0208 (containing Kanji level 1 and 2, total of 6,879 characters) or JIS X 0213 sub

The solution (more of a workaround) to this is to cut the font to just JIS X 0208 (containing Kanji level 1 and 2, total of 6,879 characters) or JIS X 0213 subset (containing Kanji level 1-4, total of 11,233 characters). It should cut the character count to the most commonly used ones, which should reduce file size by a lot (or skip JIS X and select only glyph for Kanji level 1 to reduce it even further). There is a Subset Maker Tool[1] (in Japanese) that can do this. But you need to provide the list of characters you want to keep by yourself (searching for JIS第1第2水準漢字 usually helps). If you do not want to do this by yourself, Google also provide a version of Noto Sans that has been stripped down to just JIS X 0208 subset in their Early Access program[1]. [1]: http://opentype.jp/subsetfontmk.htm http://opentype.jp/subsetfontmk.htm [2]: https://fonts.google.com/earlyaccess#Noto+Sans+Japanese https://fonts.google.com/earlyaccess#Noto+Sans+Japanese