As usual, some files barely changed at all, but the program did make its advertised 80 percent reduction in other cases - more, sometimes - and without having much effect on quality. At a minimum the program just needs an input and output folder, and you can adjust how it works in a simple Settings dialog (turn off downscaling, maybe, or choose which content to remove). ORPALIS also claims that the program analyses layout, finds similar bitmaps and uses that information to optimize compression, but we’re not sure how that works or what it can achieve.Īll this is extremely easy to set up. If this isn’t enough, you can opt to resample images to a lower DPI. The program applies multiple compression techniques on some images, reducing file size without losing any quality. PDF Reducer detects any which are just black and white, then re-encodes them as plain black and white images, often with dramatic savings. If the file contains scanned documents, they’ll all be encoded as full color images. Any which aren’t used are stripped out of the file, and you can optionally remove other items you may not need: annotations, bookmarks, embedded files and more. This starts by checking individual PDF objects. Unlike some of the competition, the program doesn’t just cut your document DPI: it applies multiple techniques to deliver the best results. ORPALIS PDF Reducer is an effective tool for optimizing PDF documents, reducing their size by up to 80 percent.
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