Lag In Adobe Reader For Mac

  1. Free Adobe Reader For Mac
  2. Lag In Adobe Reader For Mac Update

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Adobe's free PDF reader has long been a standard for handling its extremely popular document format, but you aren't limited to using it to view your PDF files. Adobe Reader’s speed and security have improved recently Adobe Reader X Adds Protected Mode for Windows Users, Android Gets New Features [News] Adobe Reader X Adds Protected Mode for Windows Users, Android Gets New Features [News] Read More, but they haven’t improved enough.

I have a handful of PDFs open. One of them in particular is extremely laggy, almost to the point of being unreadable. When I scroll through its pages, it's almost like an extreme version of v-sync being turned off. Overall system resources are plentiful, and all of the other PDFs cruise up and down with no stuttering or problems. I've tried closing and reopening the problem PDF to no avail. It's a small PDF, only 3MB in size, with no graphics (only programming code snippets).

Surely, it must be some type of problem with the specific PDF (I'll try opening it in another PDF-viewing program, rather than Acrobat X). Possible corruption? Could there be some type of GPU/hardware-acceleration intervening going on? I've never heard of such with PDF-viewing. EDIT One difference that I've noted is that the laggy file has -lots- of fonts in it, according to the PDF properties inside Adobe Acrobat. Probably 10x the amount of the other PDFs I have open.

Could this be the source of trouble? If so, is it possible to compress/strip fonts from it? TLDR; The quality and size of the data embedded within the PDF file can have a very big impact on the speed of scrolling. -- In simplistic terms, a PDF is a container format.

The content can vary widely and can be arbitrary. Typically, the text is stored as plain text with typeface markers, and there are few images, these would be quick to scroll. Some files have more images, which will degrade scrolling speed--worst case, the images need to be completely redrawn for every pixel of scrolling. Some PDFs are merely full-page image scans. Images are going to require more work from the computer to manipulate, since there is more data (more bytes). Images can be at arbitrary resolutions. If I am creating a magazine ad, I would use images that were 300dpi.


A 10x10 inch photo (for print) would be 3000 pixels square. /change-password-for-mac/. Expressed in bytes, this is 3000 x 3000 x 4 bytes (minimum for CMYK color for print). That same image displayed for the screen at a particular zoom might only require the display of 300px square (for RGB = 300x300x3 bytes min), but the reader must still manipulate the original LARGE image. Depending on the reader software, an image thumbnail may be created based upon zoom factor to speed this up. If I give you a draft version PDF of that ad using acrobat's 'standard' setting, it might be.5-1MB in size and be quick to display (but not very good quality if you print it out). The same ad using an 'offset press' preset (without JPG compression enabled) could be be 35MB in size and you would notice a difference in speed, but the screen quality will be improved a little and the print version would be immaculate.

Free Adobe Reader For Mac

If the image is a vector image, depending on layers and complexity, it may need to be recalculated each time you move the page. A lot all depends on the reader software and the manner in which the PDF was created.

Lag In Adobe Reader For Mac Update

AFAIK, the original PDF specification even allowed for the embedding and execution of arbitrary binary & executable files.

This entry was posted on 13.09.2018.