3. Which file should you upload?

The most reliable format is PDF. It best preserves layout structure, fonts, images and page sizes.

  • PDF — the recommended format for the finished layout.
  • EPUB, MOBI and FB2 — are supported, but are converted to PDF during processing.
  • Optimal size — up to 300–400 MB; the maximum is 1 GB.
After conversion: check text, hyphens, images, and overall layout. Automatic conversion of an e-book may change the arrangement of individual elements.
On screenSupported formats
Supported file formats for upload
3Document format For a ready-made layout, choose PDF; the site first converts electronic formats.
Video 3. File format and size23 seconds