Answers.Body: <p>To prevent the images from scaling you should set the width of the image in pixels rather than in, eg, <code>100%</code>. It appears that the Kindle Paperwhite is 4.6 inches wide at 212 ppi (<a href="http://rads.stackoverflow.com/amzn/click/B00AWH595M" rel="nofollow">source</a>), which comes to an unlikely 975.2 pixels wide&mdash;but it's a place to start. I would suggest setting image width (or width of containing <code>div</code>) to 970 px for starters. If it's distorted, then there is probably a hard-coded margin for the page of greater than 2 pixels, so reduce a small amount and try again.</p>
  
  <p>Note that specifying the pixel size will mean that on other Amazon devices, the image will not resize to fit the screen&mdash;iPad and iPhone Kindle app users may not be happy with the end result.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-05-05T04:22:28.657Z
Answers.Text: >Kindle Paperwhite is 4.6 inches wide at 212 ppi (source), which comes to an unlikely 975.2 pixels wide  ---- This is almost certainly incorrect. I'm just looking for the final figure. According to various sources the full resolution of the display is either 768x1024 or 758x1024. k2pdfopt  v.2.32 gives 758x940
Answers.UserDisplayName: pgay
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-05-03T09:28:20.903Z
Answers.LastActivityDate: 2015-05-03T09:28:20.903Z
Answers.UserDisplayName: Tom
Answers.Body: <p>Screen shots from a Paperwhite 2 displaying a PDF file can be located <a href="https://www.mobileread.com/forums/showthread.php?p=3013298#post3013298" rel="nofollow noreferrer">here</a>.  These screen shots were the basis for the values used in the latest version of k2pdfopt.  My experience is that getting a 1-to-1 isn't trivial.  I had to work at it with my old Kindle 2.  You may need to adjust slightly the values of the width and height and the values used by the -pad option.  Also you should use the -mc option (on by default).  For each trial, you should take a screen shot of your PDF on your Kindle and see if it exactly matches the bitmapped file within it.</p>
  
  <p>You can see the values used for the Paperwhite 2 selection by running:</p>
  
  <pre><code>k2pdfopt -dev ?
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-04-03T16:12:17.977Z
Answers.LastActivityDate: 2017-04-03T16:12:17.977Z
Answers.UserDisplayName: willus
Answers.Body: <p>Calibre lists the paperwhite as having a pixel count of 658 x 940 and the paperwhite 3 as having a screen size of 1072 x 1430.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-02-28T01:52:10.840Z
Answers.LastActivityDate: 2016-02-28T01:52:10.840Z
Answers.UserDisplayName: SamKowald
Body: <p>My goal is to produce files which, when displayed, are rendered 1:1, pixel-for-pixel, in order to ensure maximum text clarity. The values provided in the GUI version of the k2pdfopt program, seem to be incorrect, and produce an obviously degraded result when displayed on the device.</p>
  
  <p>Of course, this should exclude the chrome at the bottom of the screen, and any margins that are drawn. Also, a means of preventing the software from automatically scaling the image would be useful to know.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-08-09T00:52:05.013Z
Comments.Text: To test if a bitmap image is resized you can use a 1-pixel checker pattern like this one: http://protie.sweb.cz/checkerboard_1920_1080.gif Resizing will probably show an aliasing artefacts. You can see the possible resulting effect on the fourth example image on this page: http://www.lagom.nl/lcd-test/clock_phase.php
Comments.UserDisplayName: pabouk - Ukraine stay strong
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-11-24T11:05:09.970Z
Comments.Text: What do people who want to increase the font size so that they can read the file do? It is not pixel accuracy that make things easier to read.
Comments.UserDisplayName: mmmmmm
Tags: <kindle><pdf><kindle-paperwhite>
Title: What is the native pixel resolution of the viewable area on a Kindle Paperwhite 2 when displaying a .pdf file?
UserDisplayName: pgay
ThreadText: # What is the native pixel resolution of the viewable area on a Kindle Paperwhite 2 when displaying a .pdf file?
  
  (Asked by: username_0 on 2015-05-03)
  
  My goal is to produce files which, when displayed, are rendered 1:1, pixel-for-pixel, in order to ensure maximum text clarity. The values provided in the GUI version of the k2pdfopt program, seem to be incorrect, and produce an obviously degraded result when displayed on the device.
  
  Of course, this should exclude the chrome at the bottom of the screen, and any margins that are drawn. Also, a means of preventing the software from automatically scaling the image would be useful to know.
  
  **Tags:** kindle, pdf, kindle-paperwhite
  
  > **Comments:**
  > **username_1**: To test if a bitmap image is resized you can use a 1-pixel checker pattern like this one: http://protie.sweb.cz/checkerboard_1920_1080.gif Resizing will probably show an aliasing artefacts. You can see the possible resulting effect on the fourth example image on this page: http://www.lagom.nl/lcd-test/clock_phase.php  
  > **username_2**: What do people who want to increase the font size so that they can read the file do? It is not pixel accuracy that make things easier to read.  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_3 on 2015-05-03. Score: 1
  
  To prevent the images from scaling you should set the width of the image in pixels rather than in, eg, `100%`. It appears that the Kindle Paperwhite is 4.6 inches wide at 212 ppi ([source](http://rads.stackoverflow.com/amzn/click/B00AWH595M)), which comes to an unlikely 975.2 pixels wide—but it's a place to start. I would suggest setting image width (or width of containing `div`) to 970 px for starters. If it's distorted, then there is probably a hard-coded margin for the page of greater than 2 pixels, so reduce a small amount and try again.
  
  Note that specifying the pixel size will mean that on other Amazon devices, the image will not resize to fit the screen—iPad and iPhone Kindle app users may not be happy with the end result.
  
  > **Comments:**
  > **username_0**: >Kindle Paperwhite is 4.6 inches wide at 212 ppi (source), which comes to an unlikely 975.2 pixels wide  ---- This is almost certainly incorrect. I'm just looking for the final figure. According to various sources the full resolution of the display is either 768x1024 or 758x1024. k2pdfopt  v.2.32 gives 758x940  
  
  ---
  
  ### Answer by username_4 on 2017-04-03. Score: 0
  
  Screen shots from a Paperwhite 2 displaying a PDF file can be located [here](https://www.mobileread.com/forums/showthread.php?p=3013298#post3013298). These screen shots were the basis for the values used in the latest version of k2pdfopt. My experience is that getting a 1-to-1 isn't trivial. I had to work at it with my old Kindle 2. You may need to adjust slightly the values of the width and height and the values used by the -pad option. Also you should use the -mc option (on by default). For each trial, you should take a screen shot of your PDF on your Kindle and see if it exactly matches the bitmapped file within it.
  
  You can see the values used for the Paperwhite 2 selection by running:
  
  ```
  k2pdfopt -dev ?
  
  ```
  
  
  ---
  
  ### Answer by username_5 on 2016-02-28. Score: 0
  
  Calibre lists the paperwhite as having a pixel count of 658 x 940 and the paperwhite 3 as having a screen size of 1072 x 1430.
  
  
  ---
  
  