Cropping and Post-Document Size

JC
Posted By
Jennifer_Castillo
Sep 25, 2008
Views
374
Replies
6
Status
Closed
Hi,

I need to crop my images at 500×500 pixels for a project. I do a Save For Web & Devices and use JPEG, optimize at 80%. When I open up the new JPEG file, the pixel size says 500×500, but the document size says 6.944×6.944 inches at 72 resoultion, instead of 5×5 inches at 100 resolution. I’ve been doing the same process for months and it was correct in pixel and document size until recently, but I haven’t changed any settings or my process. Does anyone know why this is happening?

Thank you,
Jennifer
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JJ
Jim_Jordan
Sep 25, 2008
When you ‘save for web’ all resolution data is removed from the image. The 72 ppi resolution is a default resolution that PS slaps on to images without ppi resolution data while you are working with the image. The ppi image resolution means nothing. Ignore it. All you need to concern yourself with is the 500 pixel by 500 pixel dimension, which appears to be covered already.
DM
dave_milbut
Sep 25, 2008
save for web strips out most meta-data. if you do file> save-as, the ppi (100) will be saved with the image.

is it for use on the web? if so ppi is meaningless and you just need to be aware that it’s 500×500 pixels.
DM
dave_milbut
Sep 25, 2008
oh you’re fast mr. jordan. 🙂
JC
Jennifer_Castillo
Sep 25, 2008
Thanks, that all makes sense. I’m just curious though, why would Photoshop display the document size differently, one as 5"x5" at 100ppi (files I did months ago) and then recently it seems to have just decided that it wanted to display the document size at the 6.944"x6.944" at 72ppi? We’ve always done a "Save for Web" and not "Save As." Other than that, thank you for your responses, I understand.
JJ
Jim_Jordan
Sep 25, 2008
Someone else recently reported a difference like this on the Mac or Windows Photoshop forum. There was also a report that Bridge may report a different default ppi than Photoshop when no resolution data is packed in the file. I can’t answer why for either of these cases but I would not recommend flexing too many brain cells on it – – since web pages do not care about ppi.
JC
Jennifer_Castillo
Sep 25, 2008
Okay, thank you Jim and Dave!

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