Files and uploading overviewFiles and uploading overview

Some features described on this page may not be available, as selling books on Google Play is limited to certain countries.

File formatsFile formats

Google accepts the following file formats:Google accepts the following file formats:

If you plan to sell your book on Google Play, provide your book content in both .epub and .pdf format to give your readers more view options. However, only one format is required.However, only one format is required.

Even when the cover image is embedded within the .epub or .pdf file, you may wish to submit the cover image in a separate file.Even when the cover image is embedded within the EPUB or PDF file, you may wish to submit the cover image in a separate file. Google will use this file to display the book cover as a thumbnail.

Content guidelinesContent guidelines

Before you upload any files, please ensure your content meets Google's guidelines.Before you upload any files, please ensure that your content meets Google's guidelines. If you plan to sell your books on Google Play, you should also review our publisher content policies for books on Google Play.

Size limitsSize limits

  • Each file (including cover image files) should be less than 2 GB.
  • The book should be at least four pages long.The book should be at least four pages long.

Format-specific guidelinesFormat-specific guidelines

.pdf.pdf
  • The .pdf file must consist of the complete book or be one of a set of specially named multi-part files.The PDF file must consist of the complete book (or be one of a set of especially named multi-part files). Do not upload sample content such as an excerpt. Your Google Search preview settings control the amount that a user can preview.
  • The .pdf file must not be password-protected, as this will prevent the file from processing.The PDF file must not be password-protected, as this will prevent the file from processing.
  • To automatically generate a table of contents, include bookmarks in the .pdf file.To automatically generate a table of contents, include bookmarks in the PDF file.
.epub.epub
  • The .epub file must contain the front cover image.The EPUB file must contain the front cover image.
  • The .epub file must consist of the complete book.The EPUB file must consist of the complete book. Do not upload sample content such as an excerpt. Your Google Search preview settings control the amount that a user can preview.
  • The .epub file should be validated by EpubCheck.The EPUB file should be validated by EpubCheck.

FilenamesFile names

Check the table below for example filenames, based on how you plan to submit your files.Check the table below for example filenames, depending on how you plan to submit your files.

A single .pdf file that includes the coverA single PDF file that includes the cover
  • Content and coverContent and cover
    • ISBN.pdf
A .pdf file that doesn't contain covers. Cover images provided in separate files *
  • Content, no cover (required)Content, no cover (required)
    • ISBN_interior.pdf
  • Front cover (required)Front cover (required)
    • ISBN_frontcover.jpg (file extension may differ, such as .jpg, .tiff, .pdf or .png)
  • Back cover (optional, but should be uploaded first if submitted)Back cover (optional, but should be uploaded first if submitted)
    • ISBN_backcover.jpg (file extension may differ, such as .jpeg, .tiff, .pdf or .png)ISBN_backcover.jpg (file extension may differ, such as JPEG, TIFF, PDF or PNG)

* An incomplete set of files will not process.* An incomplete set of files will not process. Read more.Read more.

A book split into multiple .pdf files *A book split into multiple PDF files *
  • Cover and contentCover and content
    • ISBN_1of3.pdf (numbering may differ)ISBN_1of3.pdf (numbering may differ)
    • ISBN_2of3.pdf (numbering may differ)ISBN_2of3.pdf (numbering may differ)
    • ISBN_3of3.pdf (numbering may differ)ISBN_3of3.pdf (numbering may differ)

* An incomplete set of files will not process.* An incomplete set of files will not process. Read more.Read more.

An .epub fileAn EPUB file
  • Content, including cover (required)Content, including cover (required)
    • ISBN.epub
  • Front cover (optional; used for marketing thumbnail)Front cover (optional; used for marketing thumbnail)
    • ISBN_frontcover.jpg (file extension may differ, such as .jpeg, .tiff, .pdf or .png)ISBN_frontcover.jpg (file extension may differ, such as JPEG, TIFF, PDF or PNG)

Which identifier to use:Which identifier to use:

  • If you upload files for a single book from the book's "Content" tab: You don't need to include the identifier in the filename.If you upload files for a single book from the book's 'Content' tab: You don't need to include the identifier in the filename. Otherwise, the identifier is necessary to associate the file with the correct book.Otherwise, the identifier is necessary to associate the file with the correct book. The filename extension will be used to determine what kind of file you've uploaded.The filename extension will be used to determine what kind of file you've uploaded.
  • If your books already have unique identifiers such as an ISBN or a Google-assigned GGKEY: Replace ISBN in the example filenames above with the book's actual identifier. (For GGKEY identifiers, you don't have to include the GGKEY: prefix).(For GGKEY identifiers, you don't have to include the GGKEY: prefix.) If you have both a print and an electronic ISBN, we generally recommend to name your .pdf files using the print ISBN, and name the .epub files using the electronic ISBN. See more information about ISBNs.
  • If your books don't have unique identifiers: You can use your own filenames. Replace ISBN in the example filenames above with text of your choice. A 10-digit or 13-digit number should be avoided, as they may be mistaken by our system to be ISBNs. We also recommend that you avoid usage of the underscore character (_) except as noted in the examples (e.g. _interior or _frontcover).

Cover filesCover files

Cover files should be in .jpeg, .pdf, .tiff or .png format and have the appropriate filename extension.Cover files should be in JPEG, PDF, TIFF or PNG format and have the appropriate filename extension.

How to upload filesHow to upload files

There are two ways to upload files in the Partner Center:There are two ways to upload files in the Partner Centre:

  • Upload files for a single book from the Content tab of the book's settings.Upload files for a single book (from the Content tab of the book's settings).
  • Upload files for as multiple books at the same time from the Book Catalogue, using the Advanced and then Add multiple content files function.

Multiple files for a single bookMultiple files for a single book

For the following cases, you should submit all the required filenames in order to process your book:

  • A book split into multiple .pdf files, (e.g. ISBN_1of2.pdf and ISBN_2of2.pdf)a book split into multiple PDF files (e.g. ISBN_1of2.pdf and ISBN_2of2.pdf)
  • A .pdf file without a cover accompanied by a separate cover image file (e.g. ISBN_interior.pdf and ISBN_frontcover.jpg)a PDF file without a cover accompanied by a separate cover image file (e.g. ISBN_interior.pdf and ISBN_frontcover.jpg)

If you submit a separate back cover image file (ISBN_backcover.jpg), we recommend that you upload it before you upload the content file (ISBN_interior.pdf).

If all the required files aren't submitted at the same time, they will be listed under 'Pending Content' on the Content tab for the book and the content or cover will not process until all the expected files have been submitted.If all the required files aren't submitted at the same time, they will be listed under 'Pending Content' on the Content tab for the book, and the content or cover will not process until all the expected files have been submitted. For example, ISBN_frontcover.pdf will remain listed under "Pending Content" until ISBN_interior.pdf is uploaded.For example, ISBN_frontcover.pdf will remain listed under 'Pending Content' until ISBN_interior.pdf is uploaded.

Updates for these books are also processed differently.Updates for these books are also processed differently.

How to update filesHow to update files

You can update a file when you upload the new version. It will supersede the old version.It will supersede the old version. Any users who've already downloaded the old version will need to reload the book to see the new version. Read more about how to fix book loading issues.

If you submit an updated file from the Book Catalogue using the Advanced and then Add multiple content files function rather than from the specific book's Content tab, the updated file should either use the same filename as the original file, or use the identifier as a prefix. Use of a different filename or a filename that doesn't contain the identifier will generate a new book listing in your Book Catalogue.Using a different filename or a filename that doesn't contain the identifier will generate a new book listing in your Book Catalogue. The following exception exists for separate cover images in .pdf files.

Updating books with multiple files (filesets):Updating books with multiple files (filesets):
  • Multi-part .pdfs (e.g. ISBN_1of2.pdf and ISBN_2of2.pdf): You must re-submit all the files, even if not all of them are being updated.Multi-part PDFs (e.g. ISBN_1of2.pdf and ISBN_2of2.pdf): You must re-submit all the files, even if not all of them are being updated.
  • A .pdf file without the cover (e.g. ISBN_interior.pdf and ISBN_frontcover.jpg): You must resubmit the content (ISBN_interior.pdf) in order to trigger the process of the most recent set of files. Alternatively, if you update the cover image with a .pdf file and don't change any other files, name the file as ISBN_frontcoveronly.pdf.

File status and historyFile status and history

You can view the status of files that you've submitted by visiting your Book Catalogue, click the book title then go to the Content tab.

Your most recently uploaded files which haven't yet processed will display under "Pending Content" with a status message.Your most recently uploaded files which haven't yet processed will display under 'Pending Content' with a status message. If there are any issues, click the error message for more information.If there are any issues, click the error message for more information. If your files process successfully, the latest versions of each display type, (e.g. the most recent .epub file, the most recent .pdf file and the most recent cover image file) will be listed under 'Processed Content' or 'Cover Files'.If your files process successfully, the latest versions of each display type (i.e. the most recent EPUB file, the most recent PDF file and the most recent cover image file) will be listed under 'Processed Content' or 'Cover Files'.

Filenames listed in the history may differ from the filenames that you used when you submit files, as any files submitted through the 'Content' tab will be renamed to include the identifier in the filename. This won't interfere with the processing of your files.This won't interfere with the processing of your files.

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