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yamlfmt vs Prettier: catalog facts
yamlfmt	Prettier
Free The open-source application is available without a license fee.	Free Free and open source; an enterprise support offering is available.
Windows, macOS, Linux	Web, Command line
Batch formatting and pre-commit integration	Consistent formatting with very little configuration Wide language support with community plugins
The project is not officially supported by Google.	Few options, so it may not match an existing house style Some languages depend on community plugins
Downloadable app	Downloadable app, Web application
Open source	Open source
License: Apache-2.0	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.