Containers & Docker
Multi-Stage Build Size Analyzer
Enter build and runtime image sizes to compute final image size with and without multi-stage builds, and expected size reduction.
No data is transmitted — everything runs locallyTool
Example — Representative default scenario — builder MB 950 · final MB 180.
Single-stage size
1,150 MB
build image + deps + artifact
Multi-stage size
57 MB
runtime base + artifact only
Size reduction
1,093 MB
95% smaller
Attack surface
Dramatically reduced
fewer packages in runtime
About this tool
Multi-Stage Build Size Analyzer
The Multi-Stage Build Size Analyzer computes single-stage vs multi-stage image sizes from build and runtime component sizes, showing expected size reduction and pull time improvement.
• Quantify multi-stage build savings before refactoring a large Dockerfile
• Calculate final image size for a Go binary using distroless base
• Model size reduction from separating devDependencies in a Node.js build
• Show size savings to a team evaluating multi-stage build adoption
Affiliate disclosure
Developer-friendly cloud infrastructure. DigitalOcean provides cloud compute, networking, and managed databases with predictable pricing.
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FAQ
What does this tool tell you?
The Multi-Stage Build Size Analyzer computes single-stage vs multi-stage image sizes from build and runtime component sizes, showing expected size reduction and pull time improvement.
What affects the result most?
Single-stage size: base + all build tools + source + dependencies + compiled artifact. Multi-stage savings: final image = base + compiled artifact only — no build tools. Typical savings: Go binary = distroless/static (2MB) + binary (~10MB) vs golang:alpine (300MB+).
How should I use the result?
The calculation is deterministic — the same inputs always produce the same output — so the most useful workflow is to vary one input at a time and see which factor moves the result most. That tells you where to focus your attention before committing to a decision.
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