GUIDE深度 · Deep dive
PDF-to-Image Quality
PDFs are vector; converting to an image rasterizes them. Higher scale means sharper but larger files. Use PNG for text/charts to avoid JPEG ringing; JPEG 0.9 works for photos. 1.5x suits screens, 2x suits print/zoom.
1x: quick preview.
1.5x: screen reading.
2x: print/zoom.
PNG: crisp text/lines, larger files.
JPEG: smaller photos, possible text artifacts.
FAQ
Why is the text soft?
Scale too low or JPEG compression; raise scale/use PNG.
Can I convert one page?
All pages (first 30) for now; range may come later.