Having problems with converting books from this site into calibre, help
Some books I downloaded from this site , work fine when I place them directly into my prs-505. But the problem is font sizes are too small ,even at highest zoom level. I then opened Calibre and when I went to convert the book, it said can not convert book because not in supported format. But the ebook ends in .LRF format and they work on prs-505.
What program would work to change font sizes in these type books.
Thanks for help in advance.
Think and grow rich and Big Book are the 2 that I downloaded from here that I could not convert in calibre.
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