PNGs are amazing for interactive documents such as web pages, but are not suitable for print. Paying attention to the resolution and file size with JPEGs is essential in order to produce a nice looking project. You can use JPEGs for projects on the web, in Microsoft Office documents, or for projects that require printing at a high resolution. JPEGs are known for their “lossy” compression, meaning that the quality of the image decreases as the file size decreases. JPEGs might be the most common file type you run across on the web, and more than likely the kind of image that is in your company’s MS Word version of its letterhead.
JPEG (or JPG) – Joint Photographic Experts Group
Websites display images at 72dpi, which is low resolution however images at this resolution look really crisp on the web. The biggest thing to note when determining what DPI or PPI you require is if you are using an image for print or web. Have you heard your designer talk about DPI or PPI? DPI stands for “dots per inch” and PPI translates to “pixels per inch.” These units of measure are essential for determining if the density of pixels in an image is appropriate for the application you are using. Often they’ll have a vector file of your logo that they can send to you for your records. If you’re not sure whether you have a vector version of your logo, here’s a little trick for you: Call the company that printed your business cards or the vendor that embroidered your logo on a shirt. The real beauty of vectors lies in their ability to be sized as small as a postage stamp, or large enough to fit on an 18-wheeler! Your logo and brand graphics should have been created as a vector, and you should always have a master file on hand. EPS, AI, and PDF are perfect for creating graphics that require frequent resizing. They are constructed using proportional formulas rather than pixels. As a result, it is important to remember to save raster files at the exact dimensions needed for the application. In order to retain pixel quality, you cannot resize raster images without compromising their resolution. Pixels have a defined proportion based on their resolution (high or low), and when the pixels are stretched to fill space they were not originally intended to fit, they become distorted, resulting in blurry or unclear images. Every photo you find online or in print is a raster image. JPEG, GIF, and PNG are all raster image extensions.
#EXTENSION FOR INDESIGN FILES SERIES#
Raster images are constructed by a series of pixels, or individual blocks, to form an image. Rasterįirst things first: What is the difference between vector and raster? Rastor Image Files We’ve put together a useful outline to help you understand the difference between each file format, and when they are appropriate to use. While the large variety of image formats may seem overwhelming, there is a method to the madness.
#EXTENSION FOR INDESIGN FILES PDF#
Unless you’re a graphic designer by training, chances are you’ve never needed to understand things like what separates a TIF from a PDF or a PSD. This is ideal where you want a reusable template that won’t easily be written over by accident.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. These are basically InDesign Documents however when you go to File / Save they force you to give the document a new name, where as an INDD file will simply write over the old file. As such an IDML version of the document is often included when sending files between clients and their agencies, in order to ensure that it can be easily opened on older versions. These can be opened on any version of InDesign back to InDesign CS4 as they are a backward compatible XML based format. IDML files are InDesign markup language files.
If you need your document to be saved on an earlier version of InDesign then you are better saving it as an IDML file. These files can be opened on the version of InDesign they are created in or later, but are not generally backward compatible and as such can not be opened on earlier versions of InDesign. INDD files are InDesign documents and this is the standard file type for anybody saving a document within InDesign.
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