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+date = 2022-02-17
+title = "Stripping Image Metadata with exiftool"
+description = "A simple guide to remove exif data with exiftool."
++++
+
+## Why Strip Metadata?
+
+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`
+
+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:
+
+```sh
+sudo apt install exiftool
+```
+
+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
+
+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:
+
+```sh
+exiftool -r -all= -ext jpg -ext png /path/to/directory/
+```
+
+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.
+
+![exiftool
+results](https://img.cleberg.net/blog/20220217-stripping-metadata-with-exiftool/exiftool.png)