A vector application such as Illustrator or InDesign is better for such a task as they only have to have the pixel overhead of the actual images, not the entire canvas represented as pixels.Īt this point in time the biggest question is why use 300 ppi? Because you have read that this is the resolution required for printing? Photoshop is not a great tool for combining images like this as the canvas size is pixel based. Are the files embedded or linked smart objects or just standard pixel layers? When you combine the separate original images onto the larger image, are you enlarging or reducing their size to fit on the new canvas at the required size? I'm guessing from the info provided that they are at 100% size. Photographic images are not as easy to compress using lossless compression, therefore the savings will not be as significant. The same 556.2 MB single layer white fill file saves as 9.3 MB on disk as the pure white fill is easy to compress. Photoshop uses lossless compression, which may be turned on or off. Each layer is smaller than the canvas, but they add up. If you are in CMYK mode, then the base file size would be 741.6 mb when open in Photoshop. Adding layers and you get an even larger file size. Your document size is 10,800 x 18,000 px which for a single layer file with a white canvas at 300ppi and 8bpc is 556.2 MB in RGB when open in Photoshop as flattened image.
Grateful for any wisdom or advice people can share, and I'm happy to answer any further questions.Īt the moment it is simply math. Attaching a photo of my document's Raw Data: I've never had this issue before, but several Adobe Creative Suite documents this week have been having the same bloat issue. And a removePhotoshopDocumentAncestors script from the Adobe website.Īnd have looked at Stephen Marsh's very helpful blog post! As well as lots of other questions on this forum. Where is this extra bloat coming from?Įven the JPG saves as unusually large (though perhaps more in line with what it should be):ģ. PSD file (usually I can print directly from Photoshop) comes in at a whopping 800MB. Issue at hand, that has come up before: 36" x 60" document, with 18 jpg images (8x10 each), 300 dpi, each of these images are anywhere from 2-5 MB.
I work in film, where I have to make and print huge files.
Grateful to everyone who has been posting about file bloat on here, I've combed through everything and have tried lots of different scripts but to no avail, as my issue doesn't seem to be a document-ancestors issue (I've successfull removed those from my files).