Free Website Security Scanner for Chrome
SecSnapr: passive security insights for the page you’re viewing.
SecSnapr checks the page you’re viewing for browser-level security issues in headers, cookies, client-side behavior, and third-party scripts. Install the Chrome extension, open a page, and run a passive scan with explanations and suggested fixes.
SecSnapr Scan
Browser-level findings
Missing CSP header
Third-party scripts can execute with fewer guardrails.
Secure cookie attributes detected
Session cookies are protected against common transport risks.
Why this matters
SecSnapr connects findings so you can prioritize the issues that meaningfully change real attack paths.
Product Tour
See the extension before you install it.
A quick look at the on-demand scan flow, risk scoring, and the kind of findings SecSnapr surfaces in the browser.
What SecSnapr checks
A web security scanner for the page you have open in Chrome. SecSnapr helps you review browser-level evidence and decide what to investigate next.
HTTP security headers
Review browser-visible response headers for security configuration signals. Findings explain why a missing or weak protection may deserve attention.
Content Security Policy (CSP)
Review CSP-related findings, including a missing policy. CSP helps a page control which resources may load; a policy’s presence alone does not establish that it is effective.
Cookie security attributes
Inspect cookie-related findings and their attributes. Review suggested changes in the context of how your application handles sessions.
Client-side security
Review browser-observable signals, including client-side storage and page behavior. These findings describe what is visible in the current page, not the application’s entire backend.
Third-party scripts
Review third-party script and dependency-related findings, including scripts loaded dynamically. External code adds trust relationships that deserve review.
How to scan a webpage
- Install SecSnapr from the Chrome Web Store.
- Open the webpage you want to inspect in Chrome.
- Open the SecSnapr extension and click “Scan.” Analysis runs only when you initiate it.
- Review the findings, their explanations, and suggested remediation. Make appropriate changes and scan again.
What a passive scan can and cannot tell you
SecSnapr helps you spot browser-visible configuration issues and understand their potential impact. Results are scoped to the page you inspect and the evidence available in your browser.
Passive analysis does not prove that a website is completely secure. It is not equivalent to a full penetration test or authenticated vulnerability assessment, and cannot establish the security of server-side code, authorization rules, or every application workflow.
Frequently asked questions
What does SecSnapr check?
SecSnapr provides passive, on-demand analysis of the current webpage: HTTP security headers, CSP, cookies, client-side behavior, and third-party script risks.
Is SecSnapr free?
SecSnapr is a free Chrome extension. Install it from the Chrome Web Store to inspect the page you are viewing.
Does SecSnapr send scan data to a server?
Extension analysis runs locally in your browser. Scan data is not sent to an external server; results may be stored locally on your device. The SecSnapr website separately uses Google Analytics for visits and install-link clicks.
Is SecSnapr a vulnerability scanner?
SecSnapr is a passive browser-side security scanner. It highlights observable security signals without active probing. It is not a full penetration test or an authenticated vulnerability assessment.
Can SecSnapr prove that a website is secure?
No. A scan only covers the signals available in the page being inspected. A clean result cannot rule out vulnerabilities or replace a broader security assessment.
What browser do I need?
Use Google Chrome with the SecSnapr extension installed. This website provides product information and an installation link; it does not run a remote URL-input scan.
See what actually matters.
Understand your security findings
SecSnapr highlights observable browser-side configuration and security signals, explains why findings matter, and suggests practical fixes. Review findings in the context of your application before making changes.
Passive, on-demand scanning
Nothing runs until you click “Scan.” No background monitoring or noise.
Explainable risk insights
Understand not just what was found, but why it matters and what could go wrong.
Built for real-world apps
Handles modern patterns like dynamic third-party scripts and client-side rendering.
Actionable fixes
From quick wins to advanced improvements, with effort guidance included.
Privacy-first by design.
Privacy and local analysis
Extension scanning runs locally in your browser, and scan data is not sent to an external server. You choose when and what to scan. Separately, this website uses Google Analytics to measure page visits and extension-install link clicks. See the privacy policy below for details.
Privacy-first by design.
Extension scanning runs locally in your browser. Scan data is not sent to an external server.
You stay in control.
The extension runs only when you decide to scan, so there is no passive browsing surveillance.
Local storage only.
Results may be saved in the browser strictly to improve the experience on your device.
Scan first. Understand faster.
Install SecSnapr and get immediate, explainable security insight for the page you are looking at without active probing or external data collection.
👉 Install Chrome ExtensionPrivacy
SecSnapr Privacy Policy
SecSnapr is a Chrome extension that provides passive security analysis of webpages.
Data Access
SecSnapr analyzes the current webpage only when the user initiates a scan. This may include HTTP headers, cookies and their attributes, client-side storage (localStorage and sessionStorage), and limited page content necessary to evaluate security signals.
User Control
The extension only runs when the user clicks the "Scan" button. It does not run automatically or monitor browsing activity in the background.
Data Collection and Transmission
Extension analysis is performed locally in the user’s browser. The extension does not transmit scan data to external servers.
Data Storage
Scan results may be stored locally in the browser to improve user experience.
Third-Party Sharing
The extension does not sell, share, or transfer scan data to third parties.
Website Analytics
The secsnapr.com website uses Google Analytics to measure page visits and clicks on extension-install links. This website analytics is separate from extension scanning; the website does not receive your scan results.
Contact
For questions, contact: support@secsnapr.com.
Support
Support
For questions or issues, contact: support@secsnapr.com
We aim to respond within 24-48 hours.
This extension runs locally in your browser. If something looks incorrect, include a screenshot when reaching out.