![]() ![]() Used when photo editing and complex colour blending is required Objects and paths based on mathematical formulasĬould not be scaled at large size without losing qualityĬould be scaled to any size without losing the quality Vector files can be saved or edited in these formats: Vector images are generally saved according to the program used to create them and they often face compatibility issues with other programs. File size of vector images files are also much smaller compared to the raster images. A vector image will always look the same no matter how close you zoom in.Ī vector image never loses its resolution and that’s why they are the most preferred option when designing logos, illustrations and technical drawings. Vector images are made of lines and curves based on mathematical calculation. They are not pixel based and can be scaled and printed at any size without losing their quality. Raster files are saved in various formats, some of them are: Once a raster image is created at a certain size and resolution, you may not be able to use this image at a larger size without losing quality. Blending of colours from one to another is very smooth and soft in raster images just like using a paint brush while painting. It is preferred to use a raster image type when working on photographs based design. You can identify a raster image easily by looking at it very closely in zoom mode. Standard resolution of raster images for web viewing is at least 72 PPI and for print 300 PPI minimum. Image with more PPI has higher resolution than an image with lesser PPI. ![]() Quality of a raster image depends on its resolution. Raster images have a certain number of pixels in per inch called PPI (pixels per inch), for example a 300 PPI image has 300 pixels per inch. If you zoom a raster image, you will be able to see a pixel in the form of tiny squares. A pixel is the smallest single point in a display device. All photos with a digital camera or scanner are also raster image type. They are created with pixel-based programs such as Adobe Photoshop. Raster images are also called bitmap images. If it is a photographic design with multiple tones and blend of colours then a photo editing program would be a better choice which will save it in a raster image type.īut if you want your design to look like an illustration or drawing with different elements and colours then use a vector based program like Adobe Illustrator. When to use which file type depends on the designing project. There are two types of images we use in designing: Raster and Vector. ![]()
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