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Device Display Resolution Chart

The comparison chart below shows the display resolution and aspect ratios of most of the major tablets and e-reading devices currently on the market, or generally still in use. It is not exhaustive, but it covers the primary reading devices being used by the majority of ebook readers, and consequently is a useful reference for making decisions regarding ebook formatting.

The chart includes both pixels-per-inch and aspect ratio, which most tech sites tend to neglect as part of their breakdown. These are handy to know when you're preparing cover art or internal illustrations, particularly for fixed layout ebooks aimed at a target market or platform.

DEVICE

Resolution

PPI

Pixels

Aspect

Kindle e-Ink [6”]

800x600

167ppi

480,000

4:3

Kindle Paperwhite [6”] (e-Ink)

1024x758

212ppi

776,192

4:3 *

Kindle Fire [7”]

1024x600

169ppi

614,400

5:3 **

Kindle Fire 7” (2nd Gen)

1280x800

254ppi

1,024,000

8:5

Kindle Fire HD 7”

1280x800

216ppi

1,024,000

8:5

Kindle Fire HD 8.9”

1920x1200

254ppi

2,304,000

8:5

Kindle Fire HDX 7”

1920x1200

323ppi

2,304,000

8:5

Kindle Fire HDX 8.9”

2560x1600

339ppi

4,096,000

8:5

Kindle Fire HD 8”

1280x800

189ppi

1,024,000

8:5

Kindle Fire HD 10.1”

1280x800

149ppi

1,024,000

8:5

iPad 2 [9.7”]

1024x768

132ppi

786,432

4:3

iPad 3-5 / Air 1-2 [9.7”]

2048x1536

264ppi

3,145,728

4:3

iPad Mini [7.9”]

1024x768

163ppi

786,432

4:3

iPad Mini 2/4 [7.9”]

2048x1536

326ppi

3,145,728

4:3

iPad Pro [12.9”]

2,732x2,048

264ppi

5,595,136

4:3

Google Nexus 7”

1280x800

216ppi

1,024,000

8:5

Google Nexus 7” (2nd gen.)

1920x1200

323ppi

2,304,000

8:5

Google Nexus 9 [8.9”]

1536x2048

288ppi

3,145,728

8:5

Google Nexus 10 [10.1”]

2560x1600

300ppi

4,096,000

8:5

Nook (eInk)

800x600

167ppi

480,000

4:3

Nook Color/Tablet

1024x600

169ppi

614,400

8:5

Nook HD 7”

1440x900

243ppi

1,296,000

8:5

Nook HD+ 9”

1920x1280

257ppi

2,457,600

3:2

Galaxy Tab (1-3) 7”

1024x600

171ppi

614,400

5:3 **

Galaxy Tab 8.9”

1280x800

169ppi

1,024,000

8:5

Galaxy Tab (1-3) / Note 10.1”

1280x800

149ppi

1,024,000

8:5

Galaxy Tab 3 / Note 8”

1280x800

189ppi

1,024,000

8:5

Galaxy Tab 4 Nook [7”]

1280x800

216ppi

1,024,000

8:5

Galaxy Note 3 [5.7”]

1920x1080

388ppi

2,073,600

16:9

Galaxy Note 10.1” 2014 Edition

2560x1600

299ppi

4,096,000

8:5

Galaxy Tab A [8”]

1024x768

163ppi

786,432

4:3

Galaxy Tab S2 8”

2048x1536

336ppi

3,145,728

4:3

Galaxy Tab S2 9.7”

2048x1536

262ppi [?]

3,145,728

4:3

Kobo Mini [5”] (eInk)

800x600

200ppi

480,000

4:3

Kobo Touch [6”] (eInk)

800x600

167ppi

480,000

4:3

Kobo Glo [6”] (eInk)

1024x758

213ppi

786,432

4:3 *

Kobo Aura HD [6.8”] (eInk)

1440x1080

265ppi

1,555,200

4:3

Kobo Vox [7”]

1024x600

169ppi

614,400

5:3 **

Kobo Arc [7”]

1280x800

215ppi

1,024,000

8:5

Kobo Arc [7”] (2nd gen.)

1024x600

169ppi

614,400

5:3**

Kobo Arc HD7 [7”]

1920x1200

323ppi

2,304,000

8:5

Kobo Arc HD10 [10.1”]

2560x1600

300ppi

4,096,000

8:5

Microsoft Surface RT [10.6”]

1366x768

149ppi

1,049,088

16:9

Microsoft Surface Pro [10.6”]

1920x1080

224ppi

2,073,600

16:9

* 10 pixels narrower than full 4:3 ratio

** Actual ratio is 128:75 = 10.24:6 - or 16:9.375 (i.e. 17:10)

As you can see the aspect ratios fall primarily into two categories - 4:3 and 16:10 - with a few peculiar discrepancies, particularly 10:6 on some common 7" devices. This is remarkably - and almost frighteningly - equivalent to the pan-and-scan / widescreen fight that went on for several years in the video industry (and is still continuing to some degree), and is, in fact, partially due to it, since the primary reason these multimedia devices have begun to appear in widescreen formats is to accommodate accurate video presentation.

However, a print book's natural aspect ratio is akin to old tube television's 4:3 standard, and so a comparative digital two-page spread fits nicely on an iPad but is miserably represented on the 10:6/16:10 devices. And since ebooks and print books will very likely continue to coexist for many years to come (and thus ebooks will naturally continue to emulate their printed counterparts, especially where fixed layout is concerned) the best scenario would be for the 4:3 format to triumph over widescreen (whereas the opposite was true for home video). This is due to the fact that black letterboxing does not affect the size of video presentation on a mobile device (since it still uses the full width), whereas the forced shrinking of a two-page book spread on a widescreen aspect display in many cases renders the text illegible. The fact that people are (surprisingly) willing to watch videos on their tiny 5" iPhones just goes to show it's nowhere near as critical as the legibility of text.

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