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Sometimes you need to reuse one or more of the images from a PDF because you don't have the original ones; you just have the PDF that somebody sent to you that you grabbed from a web site. So, how can you get the images out of the PDF? Well, I did show earlier in this title how to copy and paste images, and just to review that really quickly, you could use the Selection tool to just click on an image, like this, and when you have selected an image, you can copy it, and then you can paste it. So like I will jump over to Word and Paste, right? So, it's just a regular image here in Word. Or if I go to Adobe InDesign even, I could choose Edit > Paste.
The image comes through there as well, but I can tell you that it's not a good idea to paste any images into InDesign, because you really want InDesign to be linking to the original one, if you want the most control, and you don't want a commercial printer to go crazy, when they get your file. So this is not the best way to get images into InDesign from a PDF. I will show you a better way in a second. Let me delete that. Let's go back to Acrobat. And then let me also mention that you could click on an image and then right-click and choose Save Image As, and when you do that, you have your choice of the format for the image.
It could be saved as a BMP-- bitmap image--as a TIFF file, or as a JPEG file. This is much better, if you are trying to get an image into InDesign, or if you need an original image to open in Photoshop, for example, because it's a stand-alone image; it's not embedded in any document. And then from here, you could always place it, or import it into any other program. Another benefit of doing a Save As by right-clicking on a selected image is that it retains the resolution that the image is currently in.
So if the image is 72-ppi, it will be saved as 72. If it is 300 pixels/inch, it will be saved as 300 pixels/inch. Now you might think, what if to export all the images at once, you go to the same place if you wanted to export all the text at once, which would be under the File > Save As menu? And indeed, there is an option here called Image. And let's try it. If you choose JPEG, and we'll just save them out to the Desktop, and click Save, and what does it do? Let's take a look. Why, it creates one whole JPEG file that is the entire page.
So if you had a 22-page PDF, and you said export to JPEG, you'd end up with 22 JPEGs, each one representing an individual page. I am sure that there are great reasons for ever wanting to do that. I don't know of any offhand. Maybe something having to do with faxing or processing or an image database, page database, I have no clue. I have never needed it myself. Instead, what I normally need is I am going to need to export all of these images as stand-alone images. Instead of selecting every individual image and choosing Save Image As, isn't there some automated way that Acrobat can do that? Yes, there is.
But it's not here under the File menu; it's over here under Document Processing in the Tools pane. If you don't see Document Processing as an option, by the way, look at the little tiny menu icon here, right underneath Tools, Comment, and Share, and select Document Processing so that it's showing. Now all these are available by default. So under Document Processing, you can choose Export All Images. And here I am going to create a new folder, and we'll call it "images from pdf". And then you can choose which type of image you want to export them to.
So you can export them to JPEG, to PNG, to TIFF, or JPEG 2000. I normally would choose TIFF or JPEG. Let's just leave it at TIFF for now. And then under Settings, depending on the option that you chose, you will see different settings. Up here, under File Settings, you can choose the quality of the TIFFs that it exports. For example, I might want all my color TIFFs exported as maximum quality JPEGs. The other ones I really don't care that much about.
Under Color Management, should I include profiles or not? Do I want to include any kind of CMYK profiles or Grayscale profiles? To me, the most important options here though, and these apply to any of the formats that you choose when you export all the images, are down here under Conversion. So, for example, Colorspace, you know PDF can contain a mix of RGB and CMYK images. If you want to keep CMYK images CMYK and RGB RGB, then leave them at Determine Automatically.
If all these images you're going to be say, reusing on a web site, they need to be RGB. So choose RGB, and it will go ahead and convert CMYK images, which are normally used for printing, to RGB. Under Resolution, the same thing. If an image has a 72 ppi resolution, it's going to export it with that resolution. If another one has 300, it's going to export it at 300. That's what Determine Automatically means. If you want them all downsampled at the time that it exported them--like, say that you are doing these for a web site-- then you probably want it automatically set to not 96, but maybe 72 pixels/inch when it exports.
Finally, under Extraction, it wants to know, "Gee! Should I export every single thing that I don't recognize as a character from a typeface?" That would be if we chose No limit here, under Exclude images smaller than. But it's assuming that you might have many tiny images, like little triangles and extra bullets, or something like that, that it doesn't recognize as a typeface, and for which you don't want to export a stand-alone image, right? So it's suggesting that any images smaller than 1 inch, it's not going to export. You can change it here of course if you want.
I am going to leave it at 1 inch. And you click OK, and then click Save. It just takes a second, and then you can check in your Windows Explorer, or Finder, take a look at that folder, images from pdf, and there are all the images. So it's very simple to export one image out to JPEG or bitmap or PNG or TIFF. It's also quite simple to export all the images at once and maintain their resolution and color settings.
Just remember that what you want to do is go to the Tools pane, go to Document Processing and choose Export All Images, if that's what you want to do. Don't go to the File > Save As image, which simply creates an image of every single page in the PDF.
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