About ZeriFlow
Built for Developers,
by Developers
ZeriFlow is an independent security tool focused on helping developers and small teams identify common security issues quickly — no enterprise budget required.
The Story Behind ZeriFlow
ZeriFlow was born from a gap in the market: security tooling was either enterprise-grade and priced to match, or a free single-purpose checker that only told you one thing. Neither option worked for independent developers, small agencies, or startup teams responsible for their own security posture.
The first version of ZeriFlow automated the manual security checks developers were already doing: TLS configuration, HTTP response headers, DNS records for SPF and DMARC, cookie flags, and information disclosure. It was designed to surface real issues in under 60 seconds — without installing agents, registering domains, or paying before you know whether you have a problem.
The project continues to evolve with a focus on practical security checks, transparency, and usability. New capabilities — source code analysis, CI/CD integration, scheduled monitoring — have been added based on direct feedback from developers using the tool in production.
ZeriFlow is maintained by an independent software publisher. If you are a developer or a small team responsible for a website, it was built for you.
Founder
Anay Pandya
Founder, ZeriFlow
Anay is building ZeriFlow to make practical website and application security more accessible for developers, startups, agencies, and small teams.
LinkedInWhy I Built ZeriFlow
As a developer, I kept running into the same problem: enterprise security tools were too expensive and complicated, while free security checkers only tested one thing at a time.
I built ZeriFlow to give developers, startups, agencies, and small teams a practical way to understand their security posture without needing a dedicated security team.
My goal is simple: make security visibility accessible to everyone.
80+
Security Checks
12
Security Categories
< 60 Seconds
Average Scan Time
Actionable
Fix Guidance
What ZeriFlow Does
ZeriFlow is a website and application security scanner that helps developers, startups, agencies, and small teams identify common security issues before they become real problems.
Instead of relying on separate tools for headers, TLS, DNS, cookies, email security, code analysis, and monitoring, ZeriFlow brings these checks into one developer-friendly workflow.
Each scan produces a clear security score, detailed findings, evidence, explanations, and practical fix guidance so teams can understand what is wrong, why it matters, and how to improve it.
How ZeriFlow Works
ZeriFlow runs non-intrusive checks against publicly available website and application signals. It analyzes areas such as TLS configuration, HTTP security headers, DNS records, cookies, exposed information, email security, and other common security controls.
Results are organized into categories with pass, warning, and fail states. Every issue includes context and remediation guidance designed for developers, not just security specialists.
ZeriFlow is built to support practical workflows: free scans, advanced scans, monitoring, reports, CI/CD checks, security badges, API access, and white-label outputs for agencies.
Our Values
Transparent by Design
Every finding includes evidence, explanations, and remediation guidance. No black-box scores. You can see exactly what was tested and why it matters.
Non-Intrusive
No agents. No installations. No infrastructure access. ZeriFlow analyzes only publicly available information and never modifies your systems.
Privacy First
Your scan data belongs to you. We collect only the information required to provide the service and never sell customer data.
What Does ZeriFlow Check?
TLS/SSL Configuration
Certificate validity, protocol versions (TLS 1.2/1.3), cipher suites, HSTS
HTTP Security Headers
Content-Security-Policy, X-Frame-Options, Referrer-Policy, Permissions-Policy, X-Content-Type-Options
Cookie Security
Secure, HttpOnly, and SameSite flags
DNS Security
DNSSEC validation, CAA records
Email Authentication
SPF, DKIM, and DMARC record validation
Information Disclosure
Server version exposure, directory listings, exposed files
Content Security
Mixed content detection, subresource integrity
Privacy
Cookie consent, tracker detection
Performance
Core Web Vitals, caching headers
Best Practices
robots.txt, sitemap, meta configuration
Pricing
ZeriFlow offers a free tier with 3 scans per day — no credit card required. Paid plans start at €9.99/month (Pro) for unlimited quick scans and advanced scan capabilities. Source code security analysis is available via GitHub integration or ZIP upload on Pro and above.
ZeriFlow is available in English and French at zeriflow.com.