If it's a scanned PDF (image based) there are several solutions PaperCrop, PDFLRF, and PDFRead.
- PaperCrop is my favorite, imaged base reflow, customizable crop. Only outputs (PNG, JPG, TIFF, or PDF)
- PDFLRF is no longer on MobileRead you'll have to torrent it. Only produced LRF but makes the BEST LRF
- PDFRead : Supports the most devices (IMP, MOBI, LRF). But the LRF does not look very good.
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