Free web security tools
Quick, free checks for your live app. No signup needed. Run one, then scan the whole app when you're ready.
Exposed API Key Checker
Find out if your API keys or secrets are leaking in your frontend JavaScript or a public .env file.
Try it→Security Headers Checker
Grade your site's HTTP security headers (HSTS, CSP, X-Frame-Options) and see what each missing one exposes.
Try it→Want everything checked at once?
These tools each check one thing. DeploySafe's full website security scanner probes your whole app and hands you a copy-paste fix for every finding.