nopy's great but for the last couple things i downloaded my antivirus popped up ransomware warnings for all downloads when extracting them,it seems to be a false alarm since i scanned them with the antivirus and with windows defender and both showed nothing.
Some antivirus software is known to be paranoid, especially if they rely on community trust (Norton LifeLock, formerly Symantec before they tax-avoided to Ireland) or heuristics (Avast which used to be half-good).
Multi-AVS sandbox scanners like VirusTotal can help you scan files in a sandboxed environment. If the ransomware is on your computer already, that is not nopy's fault. Also, do get an adblocker - many are permissive with sites that don't run intrusive ads or suspicious ad rotators (e.g. juicyads) and redirect unwanted traffic to /dev/null.
If you have security concerns (mostly for server setup, but even client/local issues) the
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usually has good advice; make sure you check the date, as most stack posts can be quite old and you don't want to get advice that was exploited in the meantime without first checking on the situation on this.
Edit: Typo fix! Thanks for the quote, lol, didn't notice that one...