![]() If you’re ordering a complex design, make sure the source file is included. The main difference between Raster and Vector Data is that the raster data represents data as a cell or a grid matrix while vector data represents data using sequential points or vertices. Raster data and vector data are two types of spatial data in GIS. Inside, however, the pixels remain pixels – with all the disadvantages described above.READ: Who was Nefertiti in the Ten Commandments? This is because the pixel files are then only put into a kind of “digital envelope”. What doesn’t work at all: Open a TIF, JPG or PNG file in Photoshop, for example, and save it again as a PDF or EPS. But even if it may be expensive – the effort is worth it – because once vectorized, the logo is then optimized for perfect reproduction for all printing processes. Depending on the complexity of a logo, this can take a few minutes, but also several hours. This is a job for experienced graphic and prepress specialists. The second – and only professional – method remains: The pixel graphics must be traced manually (sometimes there is also talk of “vectorizing”). Especially when very exact geometric shapes have to be traced (horizontal and vertical lines, rectangles, circles, etc.), this method is only an emergency solution. The emphasis is on “would be” – because the automatic function only works well in very rare cases. If you still can’t find a vector graphic, there are two ways to convert pixels into vectors:Ī convenient method would be to use the tracing function in illustration programs like Adobe Illustrator. So contact your advertising agency, advertising department or the graphics studio that created your Corporate Design and always ask for a vector file (too) – preferably as soon as you place your order. This is infinitely easier than vice versa. Most professional graphic designers create logos as vector graphics first and then convert them into pixel graphics as needed. That is not so easy – more about that in a moment.īut before you think about a conversion, you better ask once again whether a vector version, e.g. ![]() How can I convert a pixel graphic into a vector graphic? with “Preview” on the Mac or with the free Adobe Acrobat Reader: If the image remains sharp even when you zoom in drastically, it is a vector file. If you’re uncertain, open the file with programs such as Adobe Illustrator or inspect it visually, e.g. Conversely, PSD files can also contain vector-based layers. However, there is a catch: Some file types can contain both vector and pixel graphics: AI, EPS and PDF files are usually vector-based, but they can also contain pixel graphics. Pixel graphics are usually contained in the following files: Vector graphics are usually contained in the following files: In most cases the file type or the file extension provides the decisive hint. How can I tell whether I have a vector or a pixel graphic? They are rendered at the maximum available resolution on any device. Or to put it another way: vector files themselves have no resolution at all. ![]() The result: One and the same vector file is printed on the professional device with four times more pixels (twice the resolution to the square) than on the office printer. In addition to single-colour outlines or areas, you can also use colour gradients or patterns. In order for the output device to know which colour the outline is to be displayed, vector graphics include information on the outline thickness, outline colour and area colour. Screens and most printers have no use for vectors or outlines – they must first fill them with pixels (“render”) – and this is where the greatest advantage of vector graphics comes into play: The higher the resolution of the screen or printer, the more and smaller pixels are packed into the outline – and the more exact or sharper the shape is recreated.Īn average office laser printer can fill an arc, for example, with 600 dpi (dots per inch) (symbolic representation below, left), but a professional digital printing machine can fill it with 1200 dpi (right). ![]() How is a vector graphic displayed on screen or printed? ![]()
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