For Screaming Frog Users
You audit the site. Who audits the code?
We scan, then we forget. You keep what you want.
You crawl client sites for broken links, redirect chains, duplicate titles, thin content, and Core Web Vitals. You know a site’s technical health down to the status code. But the tracking scripts, schema snippets, plugins, and third-party widgets you recommend and install on those same sites are almost never read for security — they are pasted in because they work and they help rankings. A crawl tells you the page is indexable and fast; it cannot tell you that the chat widget in the footer writes untrusted input to innerHTML, or that the “analytics” snippet a previous agency left behind hides a hardcoded key. AllScanTool closes that gap: paste the script or snippet before it goes on the client’s site and the Delivery-Layer Engine flags SQL injection, XSS, hardcoded credentials, and insecure functions — each with the line number, a severity, and a concrete fix. It runs in your browser and forgets the code the moment you leave. No logs. No storage. No retention. Your code stays private.
You measure everything on the site. The code on it goes unmeasured.
These are the gaps where an SEO audit signs off the page but never looks at what the installed code actually does.
Third-party scripts recommended but never read
Tag managers, chat widgets, and conversion pixels get added to boost performance and tracking. They run with full access to the page — and almost none of them are audited first.
Schema and snippet code pasted from blog posts
JSON-LD, custom JavaScript, and “just paste this in your header” snippets come from SEO articles and forums. They help rankings — but their security is taken entirely on faith.
Plugins installed for SEO, not vetted for safety
The redirect manager, the schema generator, the speed plugin — chosen because they fix a crawl issue. Their code touches the whole site, and no one checked it line by line.
Inherited tracking code from previous agencies
Client sites accumulate years of analytics, A/B test, and marketing scripts. You crawl around them — but that legacy code is still executing, and it may be hiding keys or unsafe calls.
The audit covers the site, not the code you add
Your report rates titles, speed, and indexability. The moment you paste in a new script to act on a recommendation, you have added code your own audit never evaluated.
It is your name on the recommendation
You told the client to install it. If that script turns out to be the breach, “it came from a popular plugin” is not the answer a client who trusted your audit wants to hear.
Ask AST
The questions SEO professionals and web consultants run into when client work means adding code — answered with the specific line, the severity, and the fix.
QA client wants me to add a third-party chat widget for conversions — how do I check the script before I install it on their site?
Paste the widget’s script and AST reads it for XSS sinks like innerHTML, suspicious external calls, and hardcoded keys — with the line and a fix — so you know what it does on the page before it ever touches the client’s site.
QI inherited a client site loaded with tracking and analytics code from a previous agency — where do I start checking it?
Paste the snippets one block at a time. AST flags hardcoded credentials, insecure functions, and unsafe DOM writes left behind in that legacy code — each with a line number — so you can clean up what is actually risky before you take ownership of the site.
QThis SEO plugin fixes a crawl issue perfectly — but its custom code touches the whole site. Is it safe?
Helping your crawl report says nothing about how the plugin handles input or secrets. Paste its source and AST checks for SQL injection, XSS, and exposed keys, marks the severity, and shows the fix — so a ranking win does not become a security liability.
QI copied a JSON-LD and JavaScript snippet from an SEO blog to add to a client header — does it have any vulnerabilities?
A snippet that produces rich results can still carry unsafe JavaScript alongside the markup. AST scans the whole block, flags any XSS or insecure calls with the line, and shows the safe version — before it goes live in the client’s header.