Participant

Question

72 dpi- saved as 96 dpi

Forum|Forum|7 years ago
January 23, 2019
5 replies
11771 views

Hi, when im save filae in 72 dpi- after i export the image i go to the file properties but the dpi set as 96.

For now I converting it to 72 dpi in a website. but can anyone know why is that happening and how can i fix it?

tnx!

This topic has been closed for replies.

L

Lumigraphics

Legend

:sigh:

Adobe writes a resolution tag into the TIFF XMP namespace. If that tag is deleted (Save for Web IF you don't choose All or All except camera data) then Adobe will default to 72 ppi. I haven't checked to see if Preview or other viewers add a resolution tag or just have a default for a missing tag.

You can look at tags in Bridge or Photoshop File Info and see this. A script that removes the tag or entire TIFF namespace will give you that change.

Having said all that, ppi is irrelevant on screen. Total pixel dimensions are what matters.

T

Test Screen Name

Legend

No, Laurence-Baker, NONE of those will output at 72 ppi. Rather, they will output with no ppi at all, which is the root of this problem (I agree, of course, for web use, it is best not to look at or care about ppi). Of the Photoshop means of saving, only Save As will preserve the ppi metadata. If the customer ABSOLUTELY DEMANDS a ppi that is set to 72, Save As is the only way.

Laurence-Baker

Known Participant

YOU ARE WRONG

Take an image of 300 PPI for example. Export the image using Export As. Open the exported image using let's say with Preview on a Mac. Go Tools/Show inspector - you will the see the PPI (or DPI as Apple wrong call it) will be 72.

If you actually carry this experiment out and you come up with any other PPI than 72. Or no PPI is shown at all, which is what you are suggesting) - I will apologise.

And as I said previously PPI doesn't matter to a screen at all, it's just a bit of Metadata embedded in the file.

T

Test Screen Name

Legend

A lot of software does not tell you that no ppi is available, and instead show their default, which might happen to be 72. Never blank. I believe Finder is exactly such software. So is Photoshop.

Eilona, may I ask you, if you're still with us, what app or system is showing the 96 ppi.

T

Test Screen Name

Legend

Absolutely do not mess with the image. Send the files you've made, they are NOT 96 ppi and NOT 72 ppi either.

Laurence-Baker

Known Participant

PPI or DPI does not matter to a screen. Only pixel dimensions matter.

So, exporting at 72 PPI is fine. Exporting at 96 PPI is also fine. It's just a bit of pointless metadata to a screen

When you go to print, PPI does matter. Because you are saying represent 300 pixels on one linear inch of paper.

It's very confusing, but it's not be helped by companies like Adobe, not adding the word Print in front of the word 'Resolution' in some dialogue boxes.

E

eilona74866288Author

Participant

tnx, but i have a customer that need all the files to be 72 dpi (it's a requiment for the website or something...) he don't really care about the quality.

any other options? maybe to export as 60 dpi?

Derek Cross

Community Expert

As already mentioned, the image resolution is irrelevant in this context, (and by the way the measurement terminology is PPI – Pixels per inch, not DPI) as the pixels will be matched to the screen resolution.

T

Test Screen Name

Legend

Export removes the resolution so you see the defsult. Different apps and systems have different defaults.

For online use this is all fine. For print use don‘t Export.

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