visual-testing

Capture and compare image snapshots automatically and manually, in Storybook and in Vitest Browser Mode.

Package	What it is for	npm	Docs
storybook-addon-vis	Capturing and comparing image snapshots of your stories, automatically and manually, from Storybook Vitest addon tests.	npm	Storybook addon
vitest-plugin-vis	Capturing and comparing image snapshots in tests that run in Vitest Browser Mode, without Storybook.	npm	Vitest plugin

Which one do I need

If you test your stories with Storybook, use storybook-addon-vis. It uses vitest-plugin-vis internally to do the heavy lifting. If you do not use Storybook and write tests in Vitest Browser Mode directly, use vitest-plugin-vis, which was extracted from the addon to be used directly in Vitest.

The existing Storybook is still available.