How do I export a Docker image to inspect here?

Run docker save my-image:latest -o image.tar and upload or drag-and-drop the resulting .tar file into this tool.

Is my container archive uploaded to any external server?

No. The tar archive header parser and JSON config extractor run 100% inside your browser using JavaScript typed arrays (Uint8Array). No image layers or files leave your device.

Docker & OCI Image Inspector

Analyze Docker saved tarballs (docker save) and OCI image configs. Unpack image layers, inspect original RUN/COPY commands, and audit environment variables 100% offline.

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Drag & drop a "docker save" (.tar) archive here

Or click "Open Image .tar" to parse offline

IMAGE LAYER HISTORY & BUILD STEPS 0 layers

CONTAINER CONFIGURATION & RUNTIME Metadata

Frequently Asked Questions

How does the browser read large Docker .tar archives?

The parser reads standard POSIX ustar 512-byte headers to discover manifest.json and configuration JSON payloads without having to extract large filesystem layers into memory.

Can I see which commands inflated layer sizes?

Yes. Each layer card displays the build instruction (e.g. RUN apt-get update && apt-get install -y ...) alongside its layer sequence number.