JPEG, GIF, and PNG are all raster image extensions. Raster images are constructed by a series of pixels, or individual blocks, to form an image. We've put together a useful outline to help you understand the difference between each file format, and when they are appropriate to use.įirst things first: What is the difference between vector and raster? Raster Image Files While the large variety of image formats may seem overwhelming, there is a method to the madness. Unless you're a graphic designer by training (like me), chances are you've never needed to understand things like what separates a TIF from a PDF or a PSD. So check your InDesign file after as some images might need to be scaled up to fill the frame.Have you ever wondered when you should use a JPG instead of a PNG? Or maybe you're just trying to figure out which program opens an INDD. This is not foolproof, for example PS will always rasterize the entire artboard containing the art, not just the artwork itself which may be much smaller. InDesign replaces all the placed AI files with their JPG equivalents. In the dialog box that appears where you select your JPGs folder, be sure to turn on the checkbox at the bottom "Match same filename but with this extension" and enter JPG. In InDesign, select all your AI files in the Links panelĬhoose Relink to Folder from the Links panel menu Select your folder of AI files as the Source folder, and create a new folder for Photoshop to save the JPGs toĬhoose JPG as the output format, set the quality level to 12 (highest) OR if you have an Action you've created, choose that option at the bottom of the Image Processor dialog boxĬlick Run, and verify your converted AI files are all there in the new folder with the same names but. In Photoshop, choose File > Scripts > Image Processor You can do so when exporting to EPUB or HTML (via Object > Object Export Options) but not PDF.
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