Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

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

share|improve this question
What type of files are they, and does if Infranview can't do it, does it have to be that program? – KCotreau Jun 29 '11 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 '11 at 7:12
The exact file type matters. Some scale (.jpg), some are pixels (.gif) – KCotreau Jun 30 '11 at 7:20
I'm talking about screenshots (taken with [Alt+]Print, then pasted), not about viewing files. – Mike L. Jul 1 '11 at 8:38
up vote 38 down vote accepted

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".

share|improve this answer
I had to adjust zoom for the setting to kick in. – NiteCyper Aug 6 '15 at 5:46

Is the image a high-resolution but low quality? As in, do you see blur before you see pixels? Irfanview isn't really meant as a pixel manipulation tool. You're probably looking more for a photoshop-esque tool. Try GIMP or similar to see if it isn't better suited for your needs.

share|improve this answer

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'.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.