Building a chrome extension with C#? Let us review it.
Expert code review for chrome extensions built with C#. We fix C#-specific security gaps, optimize performance, and handle deployment. From $19.
Common C# issues we find
Real problems from C# codebases we've reviewed.
Async void methods
Using async void instead of async Task in non-event-handler methods, causing unhandled exceptions that crash the process silently.
Missing IDisposable implementation
Database connections, HTTP clients, and file streams not disposed properly, causing resource exhaustion under load.
Insecure deserialization
Using BinaryFormatter or Newtonsoft with TypeNameHandling.All to deserialize untrusted data, enabling remote code execution.
Missing authorization attributes
ASP.NET controller actions without [Authorize] or policy-based checks, exposing endpoints to unauthenticated users.
Chrome Extension challenges to solve
Key chrome extension concerns that AI-generated code often misses.
Manifest V3 compliance
Chrome is migrating to Manifest V3, which changes how extensions work — service workers instead of background pages, restricted remote code execution, and new permission models. AI tools sometimes generate Manifest V2 code that won't be accepted.
Permission minimization
Chrome Web Store reviews extensions for excessive permissions. Request only the permissions you actually need. AI tools often request broad permissions ('tabs', 'storage', 'activeTab') when narrower permissions would suffice.
Content Security Policy
Extensions must comply with strict CSP rules. No inline scripts, no eval(), no remote code loading. AI-generated code sometimes violates these rules, causing the extension to fail silently.
Data privacy
Extensions that access browsing data must have a privacy policy, explain what data is collected, and handle it securely. Chrome Web Store requires this disclosure for approval.
What we check
Key areas we review for C# chrome extension projects.
Manifest V3 compliance — service workers, permissions, CSP
Permission minimization — only requesting what's needed
Content security — no eval(), no inline scripts, no remote code
Data handling — privacy policy, secure storage, no unnecessary collection
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Start with a self-serve audit
Get a professional review of your C# chrome extension project at a fixed price.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Can you review a chrome extension built with C#?
Yes. We regularly audit C# chrome extension projects and understand the specific patterns and pitfalls of this combination. Our review covers security, performance, and deployment readiness.
What issues do you find in C# chrome extensions?
Common issues include async void methods and missing idisposable implementation on the C# side, combined with chrome extension-specific concerns like manifest v3 compliance and permission minimization. We check for all of these and more.
How do I make my C# chrome extension production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For C# chrome extension projects, the typical path is: fix security gaps, address chrome extension-specific requirements, optimize C# performance, then configure deployment. We provide a fixed quote after the audit.
How long does it take to audit a C# chrome extension?
Our code audit delivers a full report within 24 hours. For C# chrome extension projects, we check security, architecture, performance, and deployment readiness across all C#-specific patterns. Fixes are scoped separately with a fixed quote.
Related resources
C# by Use Case
Need help with your C# chrome extension?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.