Quote:
Originally Posted by radamo
I wasn't recommending that... 
I am sideloading in AZW3 format if that makes any difference. |
Thanks for a tip.
Most bookstores in Poland send ebooks in mobi7 format to Kindle. I have just double checked that the FONT_RAMP hack works only for ebooks in AZW3(mobi8) format. It seems the hack does not affect default font sizes hardcoded in firmware for ebooks in neither MOBI(mobi7) format nor KFX one.
As I like to have my ebooks purchased from other bookstores than Amazon still available in Kindle cloud, the only option is to convert almost every newly purchased ebook in tool like Calibre to a file containing both mobi7 and mobi8 format versions. This can be achieved be setting MOBI file type to "both" on the MOBI output tab of the convert dialog box in Calibre.
Next, MOBI file type "both" can be manually sent to Kindle. PW3 chooses AZW3 over "old" MOBI so FONT_RAMP works.
As I prefer reading over hacking the PW3 the above steps seems to be too much hassle but anyway I do backup all my purchases in Calibre database that is mirrored to Dropbox.
Well honestly, I backup my new purchases from time to time. So tweaking font sizes may have a side effect that I not so easily forget about an impulse purchase.
Sorry, for my off-topic ramble, but maybe someone may find this useful.
The below is my FONT_RAMP file that in theory should have the smallest possible font size increase step supported by FW 5.9.2 for Bookerly font face on PW3:
7.82 8.16 8.50 8.84 9.18 9.52 9.86 10.20 10.54 10.88 11.22 11.56 11.90 12.24
It should give same sweet point between standard size 4 and size 5, possibly with higher setting in case of my FONT_RAMP.
I guess the final size depends on CSS parameters inside AZW3 file. E.g.:
.calibre {
font-size: 1.125em;
}
The CSS may be a root cause for the phenomenon that for some book the font size 4 looks good in my eyes, but the font size 5 is better for an another book. Irritably, I have some ebooks that the size 4 look to small and the size 5 to big.
Possibly, I'm getting old and becoming picky. I had used to read quite a lot on Palm Vx equipped with the sexy green backlight screen. At least fonts had used to have standard sizes in those days.
Just curious, is this CSS font-size value multiplied by a value in FONT_RAMP?
I empirically checked that changing font-size in CSS indeed affects font step increases. So it works somehow, but how exactly it works it is puzzle to me.
What font size in px is equivalent to 1em on the PW3 (300dpi) display?