Dockerfile Formatter & Linter
Clean up, normalize instruction casing, trim excessive spaces, and validate standard Dockerfiles instantly in your browser.
Sample Inputs:
Awaiting Input
Invalid Dockerfile instruction syntax.
Why Format Your Dockerfiles?
Consistent code formatting in Dockerfiles ensures that instruction identifiers (like FROM, RUN, and COPY) use proper uppercase casing conventions. Normalizing whitespace, fixing inconsistent line continuations, and organizing multi-stage builds improves readability and maintainability across team projects.
Frequently Asked Questions (FAQ)
No. All formatting and validation logic runs locally within your browser using client-side JavaScript, guaranteeing complete data privacy.
The formatter preserves backslash line-continuation sequences (
\) correctly, maintaining the integrity of multi-line shell commands and arguments.