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diff --git a/blog/2022-02-17-exiftool.org b/blog/2022-02-17-exiftool.org deleted file mode 100644 index 790e1a1..0000000 --- a/blog/2022-02-17-exiftool.org +++ /dev/null @@ -1,67 +0,0 @@ -#+title: Stripping Image Metadata with exiftool -#+date: 2022-02-17 - -** Why Strip Metadata? -:PROPERTIES: -:CUSTOM_ID: why-strip-metadata -:END: -Okay, so you want to strip metadata from your photos. Perhaps you take -pictures of very rare birds, and the location metadata is a gold mine -for poachers, or perhaps you're just privacy-oriented like me and prefer -to strip metadata from publicly-available images. - -There are various components of image metadata that you may want to -delete before releasing a photo to the public. Here's an incomplete list -of things I could easily see just by inspecting a photo on my laptop: - -- Location (Latitude & Longitude) -- Dimensions -- Device Make & Model -- Color Space -- Color Profile -- Focal Length -- Alpha Channel -- Red Eye -- Metering Mode -- F Number - -Regardless of your reasoning, I'm going to explain how I used the -=exiftool= package in Linux to automatically strip metadata from all -images in a directory (+ subdirectories). - -** Installing =exiftool= -:PROPERTIES: -:CUSTOM_ID: installing-exiftool -:END: -First things first: we need to install the tool. I'm running Debian 11 -on my server (Ubuntu will work the same), so the command is as simple -as: - -#+begin_src sh -sudo apt install exiftool -#+end_src - -There are different tools that can accomplish the same thing across -distributions, but I really only care to test out this one package. - -** Recursively Strip Data -:PROPERTIES: -:CUSTOM_ID: recursively-strip-data -:END: -I actually use this tool extensively to strip any photos uploaded to the -website that serves all the images for my blog (=img.cleberg.net=). - -The following command is incredibly useful and can be modified to -include any image extensions that =exiftool= supports: - -#+begin_src sh -exiftool -r -all= -ext jpg -ext png /path/to/directory/ -#+end_src - -See below for the results of my most recent usage of =exiftool= after I -uploaded the image for this blog post. You can see that the command will -let you know how many directories were scanned, how many images were -updated, and how many images were unchanged. - -#+caption: exiftool results -[[https://img.cleberg.net/blog/20220217-stripping-metadata-with-exiftool/exiftool.png]] |