> For the complete documentation index, see [llms.txt](https://docs.snyk.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snyk.io/developer-tools/snyk-cli/scan-and-maintain-projects-using-the-cli/test-public-npm-packages-before-use.md).

# Test public npm packages before use

How to test public npm packages with the Snyk CLI before using them

You can use `snyk test` to **scrutinize a public package before installing it**, to see if it has known vulnerabilities or not. Use the package name to test the latest version of the package.

`snyk test ionic@1.6.5`

You can also provide a specific version or range using `snyk test module[@semver-range]`.

See also [Getting started with the CLI](/developer-tools/snyk-cli/getting-started-with-the-snyk-cli.md).


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