Questions tagged [compression]

The re-encoding of a file or data into a form that uses fewer bits of information than the original data.

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Why does Image Capture scan tiff files with different compression formats?

I'm scanning some old family photos using Image Capture. I want a lossless image using TIFF and LZW compression. What I'm seeing, thanks to the tiffutil -info <file> command, is that the .tiff ...
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What is the full name for LZVN, the compression algorithm?

The LZVN algorithm, like the better-known LZFSE, is introduced in macOS 10.9 for decmpfs. It was discovered in 2014 as a kernelcache compressor before the official WWDC 2016 release of LZFSE, which ...
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Can I turn off memory compression for one specific app?

I am using MATLAB on my Mac. Well, MATLAB is running well but not fast -- while there are plenty of free memory, my Mac still compresses MATLAB's memory - from ~2GB to ~600MB -- not to mention the ...
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Exponential PDF File Size in Preview

I have word document (.docx on a mac) at 3.4 MB. When I save it to PDF it becomes a whomping 90 MB. I can't make it smaller and I can't figure out why it's happening. Here are the details: I've tried ...
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Batch compress contents within a folder using Mac Automator

I've seen an automator service that can zip multiple folders into separate zip files: Batch compress multiple folders into individual zip files Can this be modified to enter the folder, compress the ...
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kernel: decmpfs repeated error messages origin?

I am in the process of evaluating different anti-virus on Mac OS X (Mountain Lion, Mavericks, Yosemite…). Upon running a full scan to test Sophos on a Mountain Lion Mac I witnessed a total slow down ...