For web graphics with solid colors and sharp borders、PNG may be more suitable than JPG when uploading to the web.。It's fine on a computer monitor、There are often problems with displaying on smartphones.。
For images with gentle gradation, such as photographs, JPG compression must be 60% or higher.、It displays beautifully without any problems.、The same goes for electronic photo albums.、If the cover has a solid color logo like the one below、The area around the letters is shaky、It may make you feel tired。This is not just an issue of image size or JPG compression rate.。
For that reason, usually、When using the logo on the web、I often use PNG format image files.。
But、The problem with PNG is that the file size is larger than JPG.、As an image for an e-book、I think it is best to use it on the cover or colophon.。
on the computer monitor、Even though they look almost the same, PNG looks better on a smartphone, as shown below.。Both color spaces are sRGB。
460Create file format as png with x460px
460x460pxでファイル形式をjpg最高圧縮で作成
