Top 6 E-books in Japan
This curated ranking covers the 6 largest e-books in Japan, ordered by estimated audience size from Rascasse's anonymized search-behavior signals. Amazon Kindle, Kobo Inc. and Open eBook lead the list with a combined estimated audience of 5,963,600 people. Across all 6 entries the average audience size is 995,043, and the largest, Amazon Kindle, reaches around 4,815,763 people in Japan. Audience size is the estimated number of unique people in Japan who actively engage with each e-books, derived from search demand signals. Rankings reflect search-behavior signals collected across Japan and are refreshed weekly.
Ranking
| Rank | Name | Audience size | Country share | Subtype | Category |
|---|---|---|---|---|---|
| 1 |  Amazon Kindle |
4,815,763 | 11.6% | E-books | Literature |
| 2 |  Kobo Inc. |
699,487 | 9.0% | E-books | Literature |
| 3 |  Open eBook |
448,350 | 8.8% | E-books | Technology & Electronics |
| 4 |  Smashwords |
5,535 | 0.9% | E-books | Literature |
| 5 |  Kobo eReader |
570 | 0.0% | E-books | Literature |
| 6 |  Barnes & Noble Nook |
553 | 0.0% | E-books | Literature |
Frequently asked questions
How is this Top 6 list compiled?
Rascasse aggregates anonymized search-behavior signals across Japan and ranks each e-books by its estimated audience size. Only entries with at least 5 measured entities are listed.
How often is the list updated?
The ranking is refreshed weekly from the latest search-behavior data and re-published as a static page.
What is the largest e-books in Japan?
Amazon Kindle currently leads with an estimated audience of 4,815,763 people in Japan.
Methodology
Audience sizes are estimated from anonymized search-behavior signals across Japan. Lists below 5 entries are not published. See methodology for full details.