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MichaelSimons / RetrievingDockerImageSizes.md
Last active June 3, 2024 11:44
Retrieving Docker Image Sizes

Retrieving Docker Image Sizes

There are two metrics that are important to consider when discussing the size of Docker images.

  1. Compressed size - This is often referred to as the wire size. This affects how fast/slow images can be pulled from a registry. This impacts the first run experience on machines where images are not cached.
  2. Uncompressed size - This is often referred to as the size on disk. This affects how much local storage is required to support your Docker workloads.

The example commands shown below will work on Windows, MacOS, and Linux.

How to Measure the Compressed Size

1. Download your Twitter archive

You can find this feature in Settings > Download Twitter Archive. It might take 24 hours to receive. Unzip the file and open the data folder in your terminal:

cd ~/Downloads/twitter-archive-zip-you-downloaded/data

(I have seen reports that this function may no longer be working, so this guide is mostly useful to those who were lucky enough to already have downloaded their archive.)