Popular Formats

PDF 13,679,474
ePub 13,021,016
Kindle 4,507,808
eReader 3,261,822
FictionBook 2,189,084
Large Print PDF 1,914,931
Mobipocket-mobi 1,871,608
Plucker 1,777,951
Palm Doc 1,765,673
iSilo 1,385,445
RTF 1,193,252
Cellphone (.jar) 1,024,796
Plain text 887,569
Sony (Librie, Reader) 691,300
Mobipocket 619,264
Microsoft LIT 392,245
Custom HTML 373,640
iPod 261,658
zTXT 66,235
Rocketbook 63,436
TCR 14,908
iPhone Books.app 5,757
Newton 3,143
Total: 50,972,015 downloads since June 1, 2009, or thereabouts.