![]() Currently, creation of a multi-page PDF file is only. Usually I would consider 300 DPI to suffice, but was just trying to push the pixel peeping quality in this test given your comment. XnConvert is a cross-platform batch image-converter and resizer with a powerful and ease of use experience. So you will inevitably need quite high dpi / large file sizes like this to keep it looking good. text or vector figures) will never be as sharp once converted to a bitmap format. What kind of content do the PDFs that you wish to convert contain? Any vector content (e.g. Converting to 600 DPI with PDF24 gave a 1.8 GB uncompressed tiff, and then finally a 95 MB compressed tiff by applying LZW compression with IrfanView. As an example I started with a ~ 6 MB PDF research paper with text and figures. Use IrfanView just to compress the outputs from that to compressed tiffīoth can be done as batch runs. ![]() Use PDF24 to convert the PDFs to uncompressed tiff (output is sharper than IrfanView and is improved as you would expect by increasing the DPI)Ģ. I've managed to get much better results now by combining the two suggestions I gave above in a two step process:ġ. I've just had a closer look at this, and I agree, the conversions from pdf in IrfanView do look a bit soft. Some other tools that might work as alternatives but I haven't tried myself include: Konwertuj wszystkie strony z pliku PDF do formatu JPG lub wyodrbnij wszystkie obrazy z pliku PDF do JPG. Note that depending on the contents of you PDFs, PNG could be significantly more space efficient compared to even compressed TIFF if you don't care about creating multi-page files. It has an option to create multipage TIFFs, as well as bit depth and DPI, but doesn't seem to include TIFF compression options (though you could always add that as a second step with IrfanView if there are any other options here not available in that). Select "Custom" output quality for full set of export options. It effectively works with batches in that you can open multiple files at once, and then you have the option to save them all in one operation. I have used this in the past for converting PDFs to PNG and it works well. Apparently there is a workaround to add dithering too:Ģ. Includes some different TIFF compression options, as well as bit depth and DPI in advanced settings. You can use XnView: In the viewer: Tools > Multipage file > Create. To create multipage TIFFs you need to tick advanced options and select the option near the end of that menu for "Apply changes to all pages (TIF/PDF saving)". Not using XnConvert, as an option to output to a multi-page file hasnt been added yet. The batch conversion option in IrfanView (shortcut "B").
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