Guide
Scan your website for free
You can scan your website for security holes for free by pasting its URL into a passive scanner like Plaintext, which reads the public page, the JavaScript, and the response headers and reports what is exposed. The first scan is free and needs no install, no login, and no access to your code.
What a free scan gets you
A free passive scan reads what your site already sends to every visitor and flags the openings in it: exposed keys, an open database, missing security headers, and leaked source. That covers the mistakes AI builders most often leave, which is the majority of what breaks a new site.
That covers the mistakes AI builders most often leave.
What to look for in the result
- Critical: a secret key in the browser or a database anyone can read. Fix these first.
- Medium: missing headers, a permissive cross-origin policy, published source maps.
- Low: disclosed versions and other information leaks.
Where a scan stops
A passive scan confirms what is exposed in what the browser receives. It cannot confirm whether your database rules are correct without querying that database, which needs your permission. A clean scan means nothing was found in what was tested, not that the app is guaranteed safe. Run it on Plaintext to see your result now.
Frequently asked
Is there a free website security scanner?
Yes. Plaintext scans your live URL for free, reading the public page, the JavaScript, and the headers to report exposed keys, an open database, and missing protections. The first scan costs nothing and needs no install.
How can I check my website security for free?
Paste your URL into a free passive scanner. It reads what your site sends to the browser and lists the security holes worst first. It is the same view an attacker has, so you catch the issues before they do.
Check your own app in about a minute. Paste your URL and Plaintext reads the shipped JavaScript, the public endpoints, and the database rules for the exact holes AI code generators leave open. The first scan is free.
Scan my app