Paste the contents of a script or stylesheet, or drop the file in, to get the integrity attribute that stops a compromised CDN serving your visitors something else.
In your browser nothing you paste is uploadedThe hash must be of the exact bytes the browser will fetch. One changed character, including a trailing newline, produces a different hash and the browser will refuse to run the file.
This checks one thing. A scan reads your whole repository and tells you what an attacker would find first.
Free scan