"The contained image masks that were not downsampled"
The contained image masks that were not downsampled pdf
by: Salvatore P.
What does the Acrobat error message "the PDF document contained image masks that were not downsampled" mean? In the PDF and PostScript languages (PDF is based on PostScript), it is possible to use a bitmap image as a mask for other images or content.2 answers. What does this mean and how can I get it so that the image masks are downsampled and it can effectively reduce the size.? Reply. Add. 1) I tried to reduce the file sizes, but it gets an error " The PDF contained image masks that were not downsampled. " and stops. 2) Can I split a large doent that it is 15 posts - 5 authors.
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However, with some of the PDF files and in reality the ones which are hardest to work with I constantly get this error message: "The PDF document contained image masks that were not downsampled. How can I make it so that Acrobat can reduce the file size? I have tried to extract each page individually, shrink that, and recombine, but it doesn't see to work. Image masks are often used when applying transparency which Acrobat might not be downsampling due to the risk of causing a visual change to your document.
It is possible to flatten transparency which again may cause an unwanted appearance for the image using the Preflight tool in Acrobat Pro. I'd suggest trying this to see if the appearance of the images is acceptable to you after doing this as it should reduce the file size.
Some common Word processors and similar applications use transparent images when it is not necessary so hopefully that is the case for you. Then I took that file and it let me reduce the size the regular way to 16MB. This isn't an expert answer, but this is what I've found. The file size is reduced by almost half and all the pages still look great. Sign up to join this community. The best answers are voted up and rise to the top. Asked 6 years, 5 months ago. Active 2 months ago.
Viewed 39k times. Hennes Jason Jason 2 2 gold badges 7 7 silver badges 15 15 bronze badges. Active Oldest Votes. Rowan Rowan 5 5 silver badges 11 11 bronze badges. Ethan Ethan 1. Linda Barrington Linda Barrington 1. Can you maybe give a link to an image or something to show that this works? Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.
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The choice depends on the targeted browsers and the time you want to invest. For a fully cross-browser result, I recommend the old fashioned way , but if you want more shapes maybe dynamic ones or more than just image masking, you could try svg or canvas. To update the answer, try clip-path see this css-tricks post.
Learn more. Asked 8 years, 6 months ago. Active 1 year, 3 months ago. Viewed 27k times. I was wondering what is the best way to mask images in HTML 5? So I have, in my opinion, two options : Canvas masking or old fashioned way Do you have others ideas? Best practices? Active Oldest Votes. Of course I would like a cross-browser viable result.. II will animate the mask and the size of the circle after all so I think using css3 border-radius is the most appropriate technique, don't you think?
Here's the method that works best for me: create an SVG of the shape of mask you want. Ryan Ryan 4, 4 4 gold badges 27 27 silver badges 31 31 bronze badges.
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