How to change the density (DPI) for specific applications?

Question

How do I change DPI for applications only (different density for system and separate for each app)? I suppose there exist some specific part of code to change DPI value.

Answer 1

Use App Settings for that. It needs a rooted device with Xposed Framework installed and its module be activated.

To change DPI for a specific app, launch App Settings → choose the app for DPI scaling (force-stop the app too) → switch the slider next to Settings → add DPI value and save.

See screenshots:

• first image -- before changing the DPI of the app
• last image -- after changing the DPI of the app

The rest is untouched, such as status bar or the keyboard app.

_{(Click image to enlarge)}

Answer 2

You can use Tasker (paid; 7 day free trial) as well provided that OS is rooted.

• Profile: Application → select app fro DPI scaling

• Task: Action: Code → Run Shell

  • Command: wm density <DPI>

    wm implies Window Manager. Replace <DPI> with the DPI you want.

  • Check Use Root

• Exit task: Action: Code → Run Shell

  • Command: wm density reset
  • Check Use Root

That's it. Launch the app and the density of the whole system will change. Exit or switch the app and DPI would revert back to normal. The fluidity of the switch is not up to the level of App Settings, but it's acceptable.

Answer 3

Use Xposed Installer + GravityBOX.