The file format is also frequently used for submitting adverts to publishers or as a graphic file format for logos and drawings. Even though the file format itself is reliable, PDF files can still be troublesome. In 2017 GWG, a graphic arts association ran a survey regarding the use of PDF files in the graphic arts industry. I’ve included how many people reported seeing each issue.īelow are the main issues reported by the 1100 respondents.The resolution of images is too low (70+%).Low image resolution leads to a loss of sharpness. When the resolution is really low images get a blocky or ‘pixelated’ look and straight lines that are not perfectly horizontal or vertical will show a staircasing effect.Use of incorrect or unwanted color spaces (50+%). Many printers request CMYK files so any PDF file containing RGB or Lab data will be incorrect, even though modern workflow systems and RIPs are perfectly capable of properly processing such color spaces. Unless this is corrected a thin white line may appear between the paper edge and close by images or tinted areas.Fonts are not embedded in the PDF (40+%).This can lead to text getting printed with a wrong typeface. The PDF file contains an incorrect number of spot colors (30+%).There are problems with transparency (30+%).It can also cause the spacing of characters to be completely wrong, with characters partially overlapping each other while others have too much spacing inbetween them.
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