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Raster forms of graphic files

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Raster forms of graphic files

T-shirt printing is nowadays a very common method not only for individual distinction among the crowd, but above all an ideal form of promoting your business. However, it should be remembered that in addition to a beautiful photo or polished graphics, its format is also important. This is because it determines whether the prints on T-shirts will look realistic and will not lose their aesthetic qualities after several washings. It can also happen that when you enlarge the graphic it will blur and most of the contours will no longer be visible. So let’s make sure to adjust the graphic format of the file in accordance with the requirements of individual printers.

What graphic file formats do we have to choose from?

Looking for information on graphic file formats, you will probably find a division into raster and vector. The first type is common and available to everyone. Vector formats, on the other hand, are those in the professional category, for which you need appropriate software. They are most often used by graphic designers, bookbinders and printing houses.

Raster formats, meaning what kind of formats?

One of the simplest definitions of raster graphics says that it is the presentation of an image on a rectangular pixel grid with predetermined dimensions. The most important feature to know is that both shrinking and enlarging affect the quality of the file. So it is most often used to save photos in digital form.

What happens when we shrink or enlarge raster files?

In the simplest terms, when we shrink our file, the pixels also shrink, creating a kind of approximation. On the other hand, when we zoom in, we stretch them, which makes our graphics blur, thus losing their original shapes.

Raster graphics – advantages

The main advantage for which everyone appreciates raster files is the ability to preview them without the need for professional software. However, it is worth noting that the most important role in this case is played by resolution. You have probably experienced this yourself more than once, but you may not even know it. This is because there is such a phenomenon as succumbing to lossy compression, which manifests itself when a reduced file decides to enlarge it again. It then becomes fuzzy and the pixels become more visible. Such an effect is often achieved when we send photos through various communicators.

When deciding to send image files in one of the raster formats, we recommend using archiving programs, that is, programs that create “packages”. We are, of course, talking about files packed in .zip or .rar formats. This is all because raster formats are vulnerable to external actions and our files, can “magically” disappear. When we pack them, we have the option of lossless and lossy compression. Which option we choose is up to us. When we want to preserve the quality of the file, we choose the first option. On the other hand, having documents that take up too much space, we opt for the second option. File archive is a very useful tool, which is worth using when sending various data to other people.

Types of raster image files you may be familiar with

There are many types of image files, but it’s worth being aware of the ones most commonly used by most people, which are:

Open Haft raster file formats

T-shirt prints must be made from graphics with the best resolutions. This has a huge impact on the effect you will see after the printing work is completed. In Open Haft, files should be sent in TIFF or PNG format.

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