What is the optimum size for the image on a summary card with large image?

[crosswebideas]

The key word is ‘optimum’. The information given by Twitter and repeated by dozens of blogs lists the minimum size. The optimum size is not given.

[andypiper]

We don’t restrict on resolution. It’s more a matter of image size, which is about 1MB.

[crosswebideas]

Thanks for getting back to me but maybe I’m missing something. There’s no optimum size for display?

There are minimum dimensions for Twitter to trigger the display of an image – but what are the dimensions for an image to fill the space? The dimensions I’ve seen quoted are 280px x 150px; this may trigger an image to be displayed but it doesn’t fill the space.

Is it possible you’re quoting for mobile screens and haven’t given information for desktops?

[CastineDesigns]

I have found that 600x300 works best for both Twitter and Facebook. I needed to find something for my work where it was just 1 image instead of two and easy to remember numbers. If you want to do 2, then FB would be 600 x 315 (1.91:1 ratio) and Twitter would be 600 x 321 (1.867:1 ratio). FB max is 1200x630 but twitter only gives a max on the MB not the dimensions.

[adrelanos]

and Twitter would be 600 x 321 (1.867:1 ratio)

That worked for me!

[ashokjp93]

Use 600 X 314 pixel as optimum size. I have tried all the above mentioned size, got minimal alignment issues.

And 600 X 314 works with facebook too.