If you’re handling hundreds or thousands of images for a book or a web site, file size differences can add up quickly, not just affecting how much space you need to store your images but also how much time it takes to upload or download them from project servers, or to back them up.
However, while ZIP compressed TIFF may be the smallest, it can take much longer to save changes and may be compatible with fewer applications. The first two examples, Photoshop format and TIFF uncompressed, are close to the document size reported inside Photoshop.
But even that same photo can take up very different amounts of disk space depending on the file format and file compression you chose, as in the figure below. For example, the document we’ve looked at so far is a basic 8×10-inch photo at 300 pixels per inch (ppi).
Having seen the various document sizes reported in Photoshop, you might wonder why those sizes don’t match what your Mac or Windows desktop tells you. Why Are Document Sizes in Photoshop Different than on the Desktop? The second number accounts for layers, channels, and masks, so for layered Photoshop documents the second size would be both larger and more representative of the size on disk. The first number is the same as in Image Size: the document size if saved as a single layer. If you configure the Status bar or the Info panel to display the document size, you’ll notice two sizes listed for the same document, separated by a slash. Why Does a Photoshop Document Show Two Sizes? The 20.6 megabytes shown above is based on the document using 8 bits per channel (bpc). (If Resample is off, Image Size doesn’t change because the number of pixels remains constant no matter how you change the numbers.) If the Resample option is on, you can watch the Image Size number change as you adjust the Width, Height, or Resolution. This number tells you how much disk space the document would use it if it was saved as a single layer. The first place you might see a document size in Photoshop is at the top of the Image > Image Size dialog box. What’s the Document Size in the Image Size Dialog Box? And the answer isn’t just academic, because understanding why could save you a lot of storage space on your hard drive or in the cloud. Please contact Blurb's customer support team and let us know the steps you've tried here.How can one Photoshop image grow and shrink dramatically during production, even without compression? It’s a question that comes up regularly.
If Lightroom DOES successfully export a PDF and you're still unable to upload a book, please contact us. If you cannot export your book to PDF you'll need to contact Adobe customer support for further help so they can troubleshoot within Lightroom. If Lightroom does NOT successfully export a PDF, please contact Adobe. (You can leave the other export/quality settings as they are for now). Then scroll down and choose "Export Book to PDF". While in the Book module, click on Book Settings then choose PDF.Ģ. If Lightroom is unable to successfully export a PDF please contact Adobe customer support for further help.ġ.This will check to see if the book upload process is failing or if there's a problem with Lightroom's ability to simply create/export a PDF. Try exporting a PDF from within Lightroom If you have a comma in your title, please try removing it and then uploading again. Note: There is currently a bug within Lightroom where uploads will fail to complete if there is a comma in the title of your project. If you click the "Send Book to Blurb" button in Lightroom and your book upload fails, please to troubleshoot with these steps. Did your Lightroom book fail to upload after you clicked the "Send Book to Blurb" button?