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Mon, Nov 16, 2020 7:55 pm

Extracting image files from Google Chrome Cache

I wanted to save a local copy of an image on a webpage I was viewing in the Google Chrome browser on a Windows 10 system, but I couldn't right-click on it to download it, so I thought I could look for it in the Chrome browser cache, which is located at C:\Users\username\AppData\Local\Google\Chrome\User Data\Default\Cache where username is the name of the relevant account on a Windows system. I had the ChromeCacheView program from NirSoft on the system, which provides a command-line option to copy image files from the Chrome cache for a user, so I used it. Since I was logged into a regular user account, I opened a command prompt as the administrator and then made the working directory the directory where the ChromeCacheView program was located with cd C:\Program Files (x86)\Network\NirSoft\ChromeCacheView. Then from that directory I issued the command below:

chromecacheview -folder "C:\Users\JohnDoe\AppData\Local\Google\Chrome\User Data\Default\Cache\" /copycache "" "image/png" /CopyFilesFolder "c:\users\johndoe\documents\temp\chrome" /UseWebSiteDirStructure 0

You can use the -folder option to tell ChromeCacheView which user's cache file you wish to use while the /copycache option can be used to specify the directory where you want images, such as PNG files, to be copied—in this case I was looking for a .png file because when I examined the HTML code on the webpage I thought that the the image was a PNG file. I created a temp\chrome directory under the Documents directory for the user account prior to issuing the command to hold the images stored in the cache. After the command completed, I could see all of the PNG files that had been in the Chrome cache in that temporary directory I had created.

When I didn't see the image I was looking for, I thought I might have misidentified it in the code, so I copied all of the image files from the cache directory, not just the PNG ones by changing "image/png" to "image" in the command. I.e.:

chromecacheview -folder "C:\Users\JohnDoe\AppData\Local\Google\Chrome\User Data\Default\Cache\" /copycache "" "image" /CopyFilesFolder "c:\users\johndoe\documents\temp\chrome" /UseWebSiteDirStructure 0

That copied AVIF (.avif), BMP GIF (.gif), icon (.ico), JPEG (.jpg), JPEG File Interchange Format (JFIF) (.jfif), SVG (.svg), and WebP (.webp) files from the cache as well as the PNG ones.

[/network/web/browser/chrome] permanent link

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