Jump to content

Affinity - DPI can't be changed

Recommended Posts


I want to change my photos from 72 DPI to 300 DPI for printing purposes. However when I tried to change the DPI, it seemed to work in Affinity but when I checked the edited photo's DPI in Preview (I use Mac), it still shows as 72 DPI. However, when I compared and zoomed in on the original photo and the edited photo with the 300 DPI, the edited photo seems much more clearer and less pixelated than the original, and its image size in pixels became bigger as well.

The procedure I did the DPI change was: 

  1. Select your image. 
  2. Select Document > Resize document.
  3. Change the dpi from 72 to 300 (Resample is ticked). Resample method is Bicubic. 
  4. Click OK.

What can I do to be able to change the DPI to 300 for printing?


Link to comment
Share on other sites

6 hours ago, Vienna said:

I want to change my photos from 72 DPI to 300 DPI for printing purposes.

OK, i may be missing something here but if you import an image at 72 ppi and simply change the resolution to 300 ppi you will get a much smaller image but definitely print ready. I do not know what you mean by previewing it, in what may I ask?  Did you export it as a 300 ppi image after changing the resolution? In other words save it as Jpeg or PNG or something and then preview that saved image?   May I ask what you understand about changing resolutions of an image and enlarging them?

This is Photoshop, but the concepts are exactly the same in Affinity and for any software that re-sizes, don't know if this helps?


Microsoft - Like entering your home and opening the stainless steel kitchen door, with a Popup: 'Do you really want to open this door'? Then looking for the dishwasher and finding it stored in the living room where you have to download a water supply from the app store, then you have to buy microsoft compliant soap, remove the carpet only to be told that it is glued to the floor.. Don't forget to make multiple copies of your front door key and post them to all who demand access to all the doors inside your home including the windows and outside shed.

Apple - Like entering your home and opening the oak framed Kitchen door and finding the dishwasher right in front you ready to be switched on, soap supplied, and water that comes through a water softener.  Ah the front door key is yours and it only needs to open the front door.


Link to comment
Share on other sites

Hi Vienna,

I obviously have no idea how much you know about resolution etc. so please excuse me if I'm advising you on matters which you already know about.


If you have a 1000px X 1000px image @ 72dpi, and then simply increase the resolution to 300 dpi - the image will shrink in size but become sharper.

HOWEVER - if you increase the dpi to 300 but still want the image to be the same dimensions (1000 x 1000) the image will pixelate badly.

With regards to resolution (dpi) - an image can always be downscaled (resulting in a sharper but smaller image) - but not upscaled, without degradation.

This is obviously a simplified answer, as there are multiple factors with regards to resolution, but I hope this helped somehow.

High-End Photographic Prints



Link to comment
Share on other sites

If you use resize to simply change the dpi from 72 to 300 without Resampling, then the pixel dimensions are unchanged but the physical dimensions will be reduced. It will not affect any pixillation when viewed at 100%.


Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC

CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

Please note there is currently a delay in replying to some post. See pinned thread in the Questions forum. These are the Terms of Use you will be asked to agree to if you join the forum. | Privacy Policy | Guidelines | We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.