Closed skotniczny closed 6 years ago
marijnh
commented
6 years ago because hybrid file generated witch ebook-convert and sent to Kindle by e-mail has broken SVG images (all SVGs with CSS styles are black). The same file transferred via USB looks good.
That's... odd. Does the sending by email go through regular plain email or through some Amazon system?
skotniczny
commented
6 years ago Calibre creator explained me that
When you send books by email they are re-processed by amazon. calibre has no control over that. Stick to USB transfer as much as possible.
marijnh
commented
6 years ago Hah, I see, that's terrible, but not very surprising. But since ebook-convert creates a 2 mb file, whereas kindlegen's output is 4.5 mb, as well as being a closed-source program with a non-trivial EULA, I'm going to keep using ebook-convert for the build on the website.
skotniczny
commented
6 years ago Yes, that is clear to me. However if you mean output size this is a bit more complex.
By default Calibre generates mobi files that contains the old format, which actually means conversion to… HTML 3.2 (SVG images are rasterized). KindleGen equivalent is ebook-convert --mobi-file-type=both. Then both produces combo KF8/MOBI file (two formats in one file). KindleGen with maximum compression option (kindlegen -c2) creates 3,5 MB file which is comparable with Calibre output.
This enables generating correct mobi files with kindlegen. It seems that without
typeattribute Kindle ignores all styles.Now
ebook-convertgenerates only old mobi format. This can be changed with option--mobi-file-type=both. However, I prefer kindlegen because hybrid file generated witchebook-convertand sent to Kindle by e-mail has broken SVG images (all SVGs with CSS styles are black). The same file transferred via USB looks good.