Known Participant

Question

Since latest update Adobe is exporting in 72 dpi and massively increases file size

Forum|Forum|6 years ago
October 21, 2019
5 replies
2361 views

I am having a very serious problem since the latest update of Adobe, which is making it worse than not useful for commercial printing.

When I go to export artwork from PSD to jpg or png to send to printers - it changes from 300 dpi to 72 dpi and massively increases the file size. This happens whether RGB or CMYK is checked, or whether resampling is checked or not.

Is anyone else having this problem? Is there a way to work around it, bar using a different program?

This topic has been closed for replies.

davescm

Community Expert

Hi

Let's try again 🙂

When you re-open a compressed jpeg it will take the same space in RAM as the image prior to saving i.e

The number of pixels x 3 / 1048576

That is the space it takes after it has been uncompressed and loaded into RAM.

It is not the size of the file on disk

Dave

Per Berntsen

Community Expert

The image size you see in Photoshop (281.6 MB) is the uncompressed size, not the size on disk.

To see the compressed size, select the file in your OS, using File Explorer or Finder (Mac).

And, has been mentioned, Export and Save for web are not designed for print.

Use Save as, which will not change the ppi value.

T

TheThinkProject2018Author

Known Participant

Hi again,

Thank you. I tried the Save As (Jpg) option - which revealed a new issue.

When I "Save As", the physical dimensions now remain the same, but the size of the file shows it has not been compressed. (It's the same as the original PSD file).

Attaches is a screengrab of the "Save As" Jpg file with the image data (massive size same as original PSD)

If other people are not having this problem, maybe my version of PS has become corrupted (though I don't see how).

If other people are having the problem, there will likely be a lot of complaints by artists and commercial users because of the serious impact on printing - then it's likely a programming bug thing, which needs urgent attention by Adobes experts.

In the meantime, any other suggestions are welcome because I have a deadline.

T

Test Screen Name

Legend

Again, you are not showing us the file size. You seem to be basing all your complaint on looking at the wrong number.

Kevin Stohlmeyer

Community Expert

Are you including a color profile when exporting? Embedded color profiles can seriously increase file sizes.

T

TheThinkProject2018Author

Known Participant

I turned off the metadata, and the Convert to sRGB and the embed colour profile (See below). It still is huge.

The Printer prefers CMYK; but it does the same in that mode

T

Test Screen Name

Legend

You're still not showing us the size on disk. Are you even looking at the size on disk? DON'T look at any sizes shown in Photoshop, they are not the size on disk. I observe your JPEG file is half the dimensions and a quarter of the number of pixels of the PSD file; I don't know what reduced it. Maybe that's a new bug, or feature.

D Fosse

Community Expert

That's right. Export is not intended for this. It's for web/screen/mobile devices, not print. Export strips ppi altogether. A file out of Export has no ppi at all, not 72, not 300, not anything else. It doesn't apply on screen.

But I have no idea how Export could increase file size. Are you sure you're not confusing file size with something else? Print dimensions naturally increase as a lower ppi is assigned by the opening application. Just change ppi back (without resampling) and print size returns to what it was.

T

TheThinkProject2018Author

Known Participant

Thank you for your information. But I think it may be a bug in the recent upgrade.

I will attach a copy of the original PSD image description; and the exported JPG image description from it, so you can see.

The same happens when I use Export As options.

I've got two artworks that need to be printed for an exhibition by the weekend. The printer does not take PSD files (probably partly due to size issues), but look at what happened below. Normally a jpeg export is under 50 MB for what I do.

davescm

Community Expert

Those screenshots do not show file size on disk. The number at the top is size in RAM in MB i.e.

Pixel size x 3 / 1048576 for an 8 bit/channel image
and

Pixel size x 6 / 1048576 for a sixteen bit/channel image

so in your first example 22500 x 15000 x 3 /1048576 = 965.6MB

File size on disk depends on the compression used in the file format being saved

Dave

(NB : 1048576 comes from 1024 x 1024 bytes in 1 MB)

T

Test Screen Name

Legend

When you Export it never sets a resolution. This is shown by other apps as 72 ppi, their default, usually, though some show 90.

Not sure where you see CMYK and resample options in Export?

For making PNG and JPG for print, use Save As.

What is your specific Photoshop version (not "latest" please)?

T

TheThinkProject2018Author

Known Participant

I'm not sure what you are referring to. Commercial printers often don't take PSD so there has to be a conversion. I have been using the Quick Export with no problem until recently.

Adobe does have a resolution setting on Export. I will attach a copy of the original PSD image details vs what happened when I exported it. It went from 300 to 72 DPI and the dimensions increased astronomically - which affected the size.

I hadn't done anything to the file in the interim.

This has happened exporting using the "quick export", or using "export as". It happens whether saving as jpg or png. It happens whether resampling is selected or not.

If this had been happening before, I would not have been able to upload files to the printer due to a 50 MB cut-off, so I would have noticed.