Issue sizing and exporting files

[designerthesunshine]

Having what seems like a very basic issue but it's driving me crazy.

I have a photoshop file, image size has a height & width of 50CM's, canvas size is the same. All good, this is the size of the image I want.



I then export the image file > export > export as. Settings looks like this:



I export the image. When I open and check the image size is has increased the width and height:



I don't understand what is controlling this image size increase when I go to the export settings. It's like the export as settings are not the same as the image / canvas size settings.

What am I doing wrong?

My end goal is to export this PSD into a JPG and have it be 50 / 50cm and high-quality.

 

[JeffK]

I've never used Export so had to dig in a bit. One bit of information that I saw in your post is that your original image is 300ppi. But when you use Export, the resolution is now 72ppi. Apparently, from what I've read, Export strips the resolution metadata from the image. It would be restored if you resized and placed the image in a program such as InDesign.

Export is apparently also used primarily for saving as a Web or Mobile document.

If you want to save your image with the resolution your originally assigned to it, use the Save As function and not Export As.

 

[thebestcpu]

Thanks @JeffK
Did not realize that the quick export, export as, and Save for Web (Legacy) output to 72 dpi. I have also seen reports that for some versions (maybe international?) that it outputs to 96 dpi with those functions. Gives me the impression that somewhere deep in Photoshop there is a setting that is the default output dpi.

So I agree with the Save As recommendation or in new versions of Photoshop using the Save a Copy command.

There is a third way I found with a search with a more Export As interface and that is making your Layers an Artboard and the using File > Export > Artboard to Files. Unfortunately both this last option as well as Save As or Save a Copy don't give the option to covert to sRGB which is pretty common for Web based images. So I guess one would need to convert to sRGB in advance if their color space was not already in sRGB

One way that still works and allows one to optionally convert to sRGB, embed or not embed the color profile, and maintain the DPI document settings is File > Scripts> Image Processor.

Learn something new everyday.
John Wheeler