Work out container image size savings instantly with clear inputs, formula shown and shareable results.
Image size affects pull time on every cold start, autoscaling event and node replacement, so a 1.2 GB image is a direct latency tax on elasticity. Multi-stage builds, distroless or Alpine bases, and removing build toolchains and package caches routinely cut images by 80 percent or more, which shortens both scale-out time and the vulnerability surface.
Image savings
saved per pull = current - optimised; daily transfer saved = saved x pulls; pull time = size / bandwidth
Only on nodes that already have the layers. Autoscaling onto fresh nodes and spot replacements pull the whole image, which is exactly when startup latency matters most.
A multi-stage build that copies only the compiled artefact into a minimal runtime base. That single change often removes most of the image.