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If you have yet to receive an FTP account for ingestion purposes (which is distinct from that for production purposes), please create a support ticket.
Please be aware of the general FTP ingestion rules before uploading.
Image file specifications:
JPG format
RGB colorspace
Resolution of 150 dpi at actual size, cropped
Image file naming convention:
Front cover image = 13-digit ISBN + "_fc" + extension (e.g., 9781585368396_fc.jpg)
Back cover image = 13-digit ISBN + "_bc" + extension (e.g., 9781585368396_bc.jpg)
Spread image = 13-digit ISBN + "_int" + extension (e.g., 9781585368396_int.jpg)
Do not include hyphens in the ISBN
Note: The root directory of the FTP account is processed on regular basis. If your files do not appear in the ingestion list after a processing cycle, check the failed directory of the FTP account.