Docker Image Size Calculator

Calculate the estimated size of your Docker image based on your Dockerfile and dependencies. Compare different base images to find the most efficient option.

1. Choose Base Image

Alpine Linux
~5 MB
Debian Slim
~80 MB
Ubuntu
~120 MB
Node Alpine
~110 MB
Node Full
~350 MB
Python Alpine
~45 MB
Enter a Docker Hub image name to estimate its size

2. Application Details

3. Dependencies

4. Advanced Options

If provided, we'll analyze your Dockerfile for more accurate size estimation

Image Size Analysis

142 MB
Total Image Size
110 MB
Base Image
25 MB
Dependencies
7 MB
Application Code

Layer by Layer Breakdown

FROM node:14-alpine
110 MB
COPY package*.json ./
0.2 MB
RUN npm install
25 MB
COPY . .
6.8 MB

Base Image Comparison

Alpine Linux

Minimal image size, fewer packages
37 MB
Base Image
5 MB
Dependencies
25 MB
App Code
7 MB

Debian Slim

Balance of size and compatibility
112 MB
Base Image
80 MB
Dependencies
25 MB
App Code
7 MB

Node Alpine

Recommended for your app type
142 MB
Base Image
110 MB
Dependencies
25 MB
App Code
7 MB

Recommendations

  • Use a more minimal base image

    Consider using Alpine Linux instead of Node Alpine to reduce your base image size by 105 MB.

  • Implement multi-stage builds

    Use a larger image for building and a minimal image for runtime to reduce final image size.

  • Optimize dependency installation

    Use production-only dependencies in the final image. This could save approximately 15 MB.

Want to Learn More About Docker Image Optimization?

Check out our tutorials on optimizing Docker images, including multi-stage builds, layer optimization, and caching strategies.

Browse Tutorials