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Irfanview: how to zoom-in without having the image blurred; I need it for GUI development to see large pixels.

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  • What type of files are they, and does if Infranview can't do it, does it have to be that program?
    – KCotreau
    Jun 29, 2011 at 13:46
  • Usually, it are screenshots. Well, IrfanView is my choice of small and fast image viewer since ages. I've tried a couple of alternatives, but they lack at different areas - mostly in usability.
    – Mike L.
    Jun 30, 2011 at 7:12
  • The exact file type matters. Some scale (.jpg), some are pixels (.gif)
    – KCotreau
    Jun 30, 2011 at 7:20
  • I'm talking about screenshots (taken with [Alt+]Print, then pasted), not about viewing files.
    – Mike L.
    Jul 1, 2011 at 8:38

2 Answers 2

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I found the solution by reading changelog

New display option: Use Resample for zooming (Menu: View->Display options)

So from "View" menu, select "Display options" and turn off "Use resample".

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  • 9
    I had to adjust zoom for the setting to kick in.
    – NiteCyper
    Aug 6, 2015 at 5:46
  • Thanks--I've been wondering why suddenly Irfanview was no longer giving me a precise zoomed view of my images!
    – Jon Coombs
    Sep 11, 2016 at 1:25
  • Thanks! baffling to me that there are a separate set of options which are not under the Options menu.
    – uglycoyote
    May 28, 2019 at 23:22
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What you're looking for is technically known as "Nearest Neighbor Interpolation".

i would use an application like

  • Microsoft's ZoomIt
  • Magnifier
  • Photoshop

they all 'preserve hard edges of pixels'.

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