resolution on various occasions

[HosunK]

Hi,

I made a graphic with photos, shapes, and chracters in Ps and exported to a jpg file.

I opened the jpg file with Preview, Photos, Twitter on MacBook Pro.

I openened the jpg file wiht Photos, Twitter on iPhone.

Observation 1

The jpg file is presented, as I expected, with Preview on MacBook Pro and Photos on iPhone.

But the resolution turns poor in Twitter on MacBook Pro and iPhone.

Observation 2

On Twitter, jpg file looks a litter better than png file in terms of resolution.

So far, I see no difference between jpg and png.

Do you have any opinion?

(Dimension: 6827 × 8192

Resolution:  300 × 300

File size: 14 MB) 

[Derek Cross]

Do you really need such a large image for onscreen viewing?

[HosunK]

In the beginning, I drew the graphic with Illustrator.

The issue was the resolution, when the vector file was exported to png or jpg.

So, I reproduced the graphic with Photoshop.

I happen to keep all the parameters identical between Ai and Ps.

It sounds like; if I reduce the file size on Ps, I would get a better resolution on all occasions.

Does that what you mean?

Hosun