Dockerfile Analyzer
Paste a Dockerfile to get a full insight report — headline metrics, detailed statistics, warnings, and improvement suggestions. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
FROM node:20 RUN npm ci RUN npm run build
Example Output
stages, layers, security warnings
How to Use
- 1Paste the a Dockerfile you want to analyze into the input box.
- 2If options are available (e.g. SQL dialect or regex flags), set them as needed.
- 3Click Analyze (or press Ctrl+Enter).
- 4Read the report: headline metric cards, detailed statistics, warnings, and recommendations.
About Dockerfile Analyzer
Dockerfile Analyzer counts stages (FROM), RUN instructions, and an approximate layer count, then gives best practices: run as non-root (USER), combine RUNs with &&, pin the base image version (avoid :latest), use multi-stage, and ensure a CMD/ENTRYPOINT exists.
Useful for a quick audit of an image's security & efficiency before building.
FAQ
Is my data sent to a server?
No. The entire analysis runs in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.
How is this analyzer different from a parser, validator, or viewer?
An analyzer produces an insight report — metrics, statistics, warnings, and recommendations — to help you judge the quality or characteristics of the input. A parser breaks it into structure, a validator gives a valid/invalid verdict, and a viewer just displays it. An analyzer focuses on "how good / what are its characteristics".