Sizing for entering professional painting exhibit online.

If it's a scan or photograph of an actual canvas, you'll need to reduce the image size in Photoshop.

Use File > Export > Export As > JPG at whatever is a proportionally reasonable image size to achieve a max file size under 4 MB.   See screenshot.

Reduce quality to reduce file size.   Scroll down and select Metadata: None; Color Space: Convert to sRGB. 

That should get you where you need to be.

Hope that helps.  Happy New Year! 

 and suggest at least 1920 pixels on longest side it is  300 pixels by 456 pixels and 72 ppi. How do I get this correct. 

 

 

By @Moira22475328uwbt

You need to create a larger image.

When you post a question you always need to tell the program you are using
There are MANY programs in a full subscription, plus other non-subscription programs
Please post the exact name of the Adobe program you use so a Moderator may move this message to that forum