They are not rivals. They answer different questions, they carry different risks and they suit different moments. This article sets out what each one does, what each one cannot see, and how a small business can decide where to start.
What a website security checker does
A security checker reads what your site says about itself from the outside, the way any visitor's browser would, and compares it with good practice. It checks whether your certificate is valid and how many days are left, whether visits to the insecure address are sent to the secure one, whether the security headers are present, whether cookies are marked Secure, HttpOnly and SameSite, whether the server reveals version numbers an attacker could use and whether the page loads insecure items.
It does not attack anything. It sends ordinary page requests, so it is safe to run on any site you are responsible for, as often as you like. The output is a list of settings to change, and for most of them the fix is a line in a configuration file or a setting in your host's panel.
What a vulnerability scanner does
A vulnerability scanner goes further. It crawls the site, then sends a large number of crafted requests to look for exploitable flaws: forms that accept dangerous input, outdated software with known holes, exposed admin pages and misconfigured servers. It is closer to what an attacker would do.
That depth has costs. A scan can be slow, noisy and, if configured badly, can disturb a live site by submitting forms or filling a database. Results need interpreting, because scanners flag many items that are low risk or false alarms, and some of the findings need a developer to confirm and fix. You should only run one against a site you own or have written permission to test.
What each one misses
A security checker will not find a flaw in your code, a weak password, a compromised plugin or a vulnerable form. A clean report means your public settings follow good practice. It does not mean your site cannot be hacked.
A vulnerability scanner will tell you about the flaws but is less useful for housekeeping like certificate expiry or missing headers, and a basic scan may not cover business logic problems, such as someone seeing another customer's orders. Neither replaces keeping your software updated, using strong unique passwords with two step sign in, taking backups and limiting who has access.
Which one should a small business use first?
Start with the checker. It is cheap, safe and fast, and it fixes the largest group of easy problems: expired or misconfigured certificates, missing headers, insecure cookies and mixed content. Most small sites will find several quick wins and no one is put at risk by running it.
Add a vulnerability scan when the risk justifies it: you take payments, hold customer accounts or personal data, run custom code or a lot of plugins. At that point the right move is often to ask a professional to test the site, scope it carefully and interpret the findings, instead of running a scanner yourself.
A sensible security routine
Run a security check after any hosting change, certificate renewal or redesign, and about once a month otherwise. Keep your platform and plugins updated, since most real world attacks use known flaws that have been fixed in newer versions. Use two step sign in for every admin account, keep backups somewhere that your site cannot overwrite and remove any plugin or account you no longer use.
Watch for the things that change quietly. A certificate that is days from expiring is the classic example, because the failure shows every visitor a warning in front of your site.
Where our checker fits
The Security and SSL Check is a checker, not a scanner. It reads your certificate and the days left, the redirects from http, the six main security headers, cookie flags, version leaks and mixed content, and tells you the exact setting to change. It costs one credit and does not attack or load your site. It also says what it did not check, because a good report is honest about its limits.
Read security headers explained for what to set, and the SSL certificate checker guide for certificates. To keep an eye on the wider health of your page every week, see weekly Monitoring.
Frequently asked questions
What is the difference between a website security checker and a vulnerability scanner?
A checker reviews your public settings such as the certificate, redirects, headers and cookies, without attacking anything. A scanner actively probes your site for exploitable flaws, which is deeper but more intrusive.
Is a security checker safe to run on my own website?
Yes. It sends ordinary page requests like a browser would, so it does not stress or alter your site.
Does a clean security check mean my site is secure?
No. It means your public settings follow good practice. It cannot see weak passwords, outdated plugins or flaws in your code.
Do I need a vulnerability scanner?
If you take payments, store customer data or run custom code, it is worth having your site tested. For a small brochure site, a checker plus good housekeeping usually covers most of the risk.
Can I scan any website I like?
No. Only test a site you own or have written permission to test, because intrusive scans against someone else's site can be illegal.