Quote:
Originally Posted by astra
LRF does perform better than ePub on my PRS-650.
All my LRFs are faster and less power hungry than any ePub.
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LRFs precalculate page info. It splits the text into hundreds of HTML files, based on the various font size options. This way, the it just grabs the next file in the archive, when you turn a page. Much quicker and lower resources needed.
For epub, it has to generate the screen on its own, when ever you change pages. If you have a poorly made ePub that is just one giant HTML file, this can really bog down things. I've had it where my 505 is chugging, for a couple seconds each time I change the page, because it is having to grab text starting with the next visible character, start laying out with reference to font size chosen and screen resolution, and then stopping when it reaches the limit for what can be shown on the screen. When you have one giant file, it has to keep the entire thing in memory, and parse further and further into it, every time you change page.