The number of self-published books topped 1 million in 2017

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The number of self-published books topped 1 million in 2017

Oct 11 2018

The number of self-published books topped the 1 million mark for the first time in 2017, according to Bowker’s annual report on the number of ISBNs that were issued to self-published authors. The total number of ISBNs issued last year rose 28% over 2016, to 1,009,188.

It is important to note that these figures represent book editions not book titles - for example, a book that is published in three different formats (say hardcover, paperback and audio), would count for three ISBNs.

The gain was due entirely to the increase in the number of print ISBNs issued by Bowker last year: 879,587, an increase of 38% over 2016. The number of ISBNs issued for e-books released by self-published authors fell 13% from 2016, to 129,601.

While Bowker noted that the 2017 decline is the third consecutive year the number of ISBNs issued for e-books fell, the drop is more likely due to authors moving to Amazon’s KDP self-publishing platform than an overall decline in the number e-books that were self-published last year. Because KDP uses Amazon’s own ASIN identifiers rather than the industry standard ISBNs, KDP’s titles do not appear in the Bowker data. Amazon does not disclose the number of KDP titles that it releases annually.

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