FreePub — PDF to ePub converter for quality preservation

Render Settings

Image Format

Kindle Model

Render DPI — screen is ~150dpi equivalent for most pages

150

JPEG Quality

82%

Auto-crop margins Fills text to the borders of the screen. Minimal text is padded for consistency.

Text-based ePubs Extracts real selectable text natively, with OCR as a fallback— tiny file, searchable, works with Kindle font controls.

Layout Mode

Reflowable: cover is the image, remaining pages are clean text paragraphs. Ideal for web upload and email (< 1 MB).

Greyscale mode Removes all colour data to reduce file size.

Book Title (optional)

~2 MB — email-safe

Under Gmail 25MB limit

Done! 100%

2.33 MB · 15 pages

› How To Ace Final 20180122.pdf · 15 pages› DPI:150 Format:JPEG Q:82% Grey:false› Pages 1–5 rendered› Pages 6–10 rendered› Pages 11–15 rendered› Assembling EPUB…› Output: 2.33 MB› Complete ✓

Output

How To Ace Final 20180122.epub

15 pages · fixed-layout · image-based

2.3 MB Email-safe

Save

Transfer to Kindle

Email to KindleBEST

Attach EPUB, send to your @kindle.com address.

Under 25MB — use any email

Web Upload

Drag & drop at send.amazon.com — up to 200MB.

Works up to 200MB

USB Cable

Connect Kindle as USB drive, copy to /documents.

No size limit

How it works: Each PDF page is rendered to an image then packed into a fixed-layout EPUB. Kindle receives crisp pixel-perfect pages with no reflow blur. Everything runs locally — nothing is uploaded.

Reducing file size:
Text ePub is the best option to reduce file size. All legible text is extracted from the PDF and repackaged as a text only document. The original layout is preserved as much as possible, but non text elements like images and tables will be removed. Lower DPI: if the screen is only 1236×1648px, rendering above ~150 DPI gives zero visible benefit and only adds to file bloat. JPEG quality depending on the quality of the original document, lowering this can be indistiguishable on some e-ink display. Greyscale removes all color data, only useful for full color scanned documents.