For FreeCodeCamp Learners
You learned to make it work. Now learn whether it's safe.
We scan, then we forget. You keep what you want.
Courses, tutorials, and forum answers teach you how to get something working — they rarely stop to show you what makes it secure. So the code from your first projects, and then your first paid client work, ships with patterns you were never taught to question. AllScanTool is a safe way to find out: paste your source and the Delivery-Layer Engine flags SQL injection, XSS, hardcoded credentials, and insecure functions, then explains each one in plain language. It runs in your browser, and your code never leaves your machine. No logs. No storage. No retention. Your code stays private.
The gap between “it works” and “it's safe”
When you are still learning, working code feels like the finish line. These are the moments where that confidence can hide a real vulnerability.
Tutorials teach features, not security
A lesson shows you how to query a database or take user input — not how to do it safely. You copy the working version and never see what was left out.
Forum answers solve one problem at a time
The reply that fixed your error was written to unblock you fast. Whether it is safe for a real project is a different question no one answered.
Your first client work uses learning code
The patterns you picked up in practice projects go straight into your first paid build — now with a real user's data behind them.
You can't spot what you weren't taught
SQL injection and XSS are not in most beginner curricula. It is hard to catch a vulnerability when you have never been shown what one looks like.
Example keys end up in real code
Tutorials hardcode an API key right in the file to keep things simple. Copied as-is into your project, that becomes a credential leak.
No senior dev reviewing your work
As a new developer you usually do not have a mentor checking every commit. A clear, private scan is a way to learn what to fix — and why.
Ask AST
The questions new developers should be able to ask — answered without judgment.
QI followed a tutorial to build a login — how do I know if it's actually secure?
Paste the code you wrote. AST checks how it handles input, queries, and credentials, then flags SQL injection, XSS, and hardcoded secrets in plain language so you learn what to fix before a real user touches it.
QThis is my first paid project — what should I check before I hand it to the client?
Run the files that handle user input and data. AST surfaces the high-risk issues — injectable queries, unescaped output, exposed keys — with a short explanation of each, so you deliver work you can stand behind.
QI copied a database query from a course — is it open to SQL injection?
Paste it in. If the query builds SQL by joining strings with user input, AST flags it and shows the parameterized version — the safe pattern most beginner tutorials skip.
QThe tutorial put an API key right in the code — is that a problem?
Yes. AST detects hardcoded keys and credentials in your source and explains how to move them into environment variables, so a copied example does not turn into a leaked secret in your project.