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Editorial Team
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Asked: 2026-06-17T23:55:30+00:00

My app has a background image and I would like to create different files

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My app has a background image and I would like to create different files of it for the sake of multiple screen support.

I sent this link (http://developer.android.com/guide/practices/screens_support.html) for a graphic designer but he asked me the dimensions in pixels that I want the images to be created with.

Considering that I have a graphic designer in my team and I don’t want to use a code to optimize the images loaded in memory (I only want to place the images in the correct folders for small, normal, large and xlarge screens), what are the most optimized size and dpi settings to generate it?

We are working with PNG files.

For the dpi we are following this:

  • ldpi Resources for low-density (ldpi) screens (~120dpi).
  • mdpi Resources for medium-density (mdpi) screens (~160dpi). (This is the baseline density.)
  • hdpi Resources for high-density (hdpi) screens (~240dpi).
  • xhdpi Resources for extra high-density (xhdpi) screens (~320dpi).

But for the dimensions I could only find this, which is in dp and not in px:

  • xlarge screens are at least 960dp x 720dp
  • large screens are at least 640dp x 480dp
  • normal screens are at least 470dp x 320dp
  • small screens are at least 426dp x 320dp
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1 Answer

  1. Editorial Team

    1 dp = 1 px on 160dpi screen.
    But your best bet for screen dimens is to look here
    http://developer.android.com/guide/practices/screens_support.html#testing
    and scroll down to where is shows the screen dimens in pixels (eg: 1920×1080) (Table 3)
    Then check which ones you need most by looking at the chart
    http://developer.android.com/about/dashboards/index.html#Screens

    but the first link will give you the most used screen dimensions in use by Android devices.

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