pixel displays sizes

i downloaded royalty free image 732(w) x 900(h) 72dpi. however, in browser, or in of default 'image' programs have in computer, image opens in 1/2 size. because if did math @ 72dpi, picture should display @ 10 inches.

 

it understanding computer monitor resolution determine size , monitor resolution 72 96dpi. yet picture being displayed in browser (and other programs) @ 140dpi, generating image 1/2 size expect (about 5 inches wide).

 

the funny thing when open in adobe acrobat, same 5inch display marked being 50% displayed, when change view 100%, picture closer 10inches expect.

 

can explain apparent default shrinking display??????

thank you,

s

most programs assume thye ppi when not in metadata. photoshop assumes 72ppi. make sure ppi in metadata. in photoshop use save instead of save web , devices.

save includes metadata, save web can save without metadata or portions of it, depending on settings , version of photoshop have. if remember correctly earlier versions did not add metadata @ since main use of save web was web @ time approx. 72ppi

 

in photoshop, make sure resample not checked in image size dialog box. having checked alter pixel dimentions, not want.

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