On a Windows 10 system, I noticed that C:UsersPCAppDataLocalMicrosoftWindowsExplorer is taking up more than 17 GB. I expected it to be a relatively small cache, but it contains many oddly named files, including entries that look like "--". Is that size normal, and what are typical folder sizes on other systems?
5 Answers
Mine is about 544 MB, with thumbcache_1280.db taking up roughly 206 MB. That gives you an idea of how a single thumbnail cache can account for a substantial portion of the folder.
Most of the space usually comes from thumbnail caches and related image metadata. Systems used to browse lots of photos can accumulate very large thumbnail database files, so occasional cleanup may be necessary.
That’s much larger than usual. Mine is around 613 MB, and several hundred megabytes can be normal, but 17 GB is definitely an outlier.
The folder is about 31 MB on my machine. Its size can vary depending on how much image-heavy content you browse.
Mine is only about 66 MB on a fairly new workstation, although newer systems may have smaller caches. The thumbcache*.db and iconcache*.db files can generally be deleted; Windows will rebuild them as you browse folders and view files.
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