The "Beyond" will be for the die-hards (like me) who like to squeeze out every last KB out of the EPUB (and where I can promote more ScriptPNG and/or other PNG optimization tools).
Or I might just split it into another Tutorial, and link to it from here, I haven't decided yet (need a few nights of rest, this was a lot of work).
I will definitely be doing a Tutorial on:
SVG -> PNG
(Was requested in this topic:
https://www.mobileread.com/forums/sho...d.php?t=222825)
I might do:
Images of Tables -> LibreOffice Calc -> HTML
(Very wide tables, or pixelated JPG, or hideous ant-sized images with unreadable text).
and whatever else comes to my head.... I have stumbled upon so much stuff in my conversions, so I might as well teach others the methods that I use. Might save lots of people lots of time, and in the end, get higher quality books out there.
Quote:
Originally Posted by grannyGrumpy
I do want to warn about 16-shade pngs though. They display badly on some readers and some apps. See the thread I posted recently https://www.mobileread.com/forums/sho...51#post2633151
Jellby responded that it is a bug in the ADE engine, dealing poorly with 2-bit and 4-bit color. |
Indeed. I noticed the same thing months ago when reducing my formulas to 4 color grayscale, my Nook rendered the formula PNGs with large "streaks".
I was going to be posting some of my information/tests in your topic within the coming days.
Quote:
Originally Posted by grannyGrumpy
I tried GMcG's suggestion for reducing to 16-shades and then back to 256 (8-bit). It does make a smaller size than an image with the full 256 shades, and in my testing came out about 10-25% bigger than the original 16-shade png. The resulting display seems to work fine. I was not working with web-safe palettes --- those would be a lot smaller, and should be fine for text.
|
Testing testing testing!!! I am glad to see you are still chipping away at those Tom Sawyer images.
Quote:
Originally Posted by Toxaris
Uhmmm, Why don't use the codecogs site? You can save it as gif/png/svg and others. That would only require one step. |
You have ruined me!
