DevTeam Co., Ltd.

Posted on Sep 11

ShowDev: Building Web PSQC – From Idea to Website Certification Platform

#webdev #seo #security #performance

Hi everyone

I’d like to share the story behind building Web PSQC, a platform I developed to test and certify websites across Performance, Security, Quality, and Content.

This isn’t just a product announcement, but more of a tutorial-style breakdown of the process, the challenges, and the lessons learned.

Why I built this

Like many developers, I used multiple tools to audit websites:

GTmetrix for performance
SSL Labs for certificates
Lighthouse for SEO
Custom scripts for link checks

It worked, but it was fragmented and inefficient.

I wanted one unified platform where you could run everything in minutes and even get a verifiable certificate at the end. That became the starting point for Web PSQC.

Step 1: Defining the scope

I listed the core areas that matter most for web trust:

Performance – speed, load times, and responsiveness
Security – SSL/TLS, headers, and vulnerabilities
Quality – accessibility, compatibility, broken links
Content – SEO metadata, structured data, crawlability

This PSQC framework gave me a roadmap for what to automate.

Step 2: Choosing the tech stack

Backend: Laravel with PHP-FPM (fast to build with)
Frontend: Blade templates with Tabler CSS (lightweight and modern)
Infrastructure: AWS EC2, Cloudflare Tunnels
SSL automation: acme.sh for Let’s Encrypt certificates

For testing tools:

Lighthouse CLI for SEO and accessibility
testssl.sh for SSL/TLS validation
Custom crawlers for link and metadata validation
K6 for load testing (optional in advanced mode)

Step 3: Building the workflow

The workflow looks like this:

User enters a domain
The system queues multiple tests
Each test runs in isolation and stores structured results
Results are merged into a single PSQC report
A certificate is generated with a unique QR code

The QR code was important because it gives companies a way to show “proof” of their audit in client presentations or on their websites.

Step 4: Handling challenges

Performance bottlenecks: Running Lighthouse or SSL scans in parallel can eat CPU. I solved this by containerizing some tests and limiting concurrency.
Data normalization: Each tool outputs results differently. I wrote parsers to normalize into a consistent JSON schema.
Scalability: Currently I rely on AWS EC2 + Redis queues, but in the future I’ll support multi-region workers to run tests closer to the target website.

Step 5: Packaging the results

Instead of raw JSON or text logs, I designed a clear certificate that summarizes the score across the 4 pillars.

Businesses can download this as PDF and share it with clients.

This turned out to be one of the most appreciated features in early demos, because agencies could prove value to their clients instantly.

Lessons learned

Developers love detail, businesses love simplicity → I had to balance logs vs. summaries.
Running too many tests at once can overload servers → queue management is crucial.
Accessibility and structured data are often overlooked, but matter for long-term SEO.

What’s next

Add percentile benchmarking against other websites
Expand load testing into multi-region mode
Allow custom branding for agencies using the certificates

Closing thoughts

Building Web PSQC was both fun and challenging. It started as a way to scratch my own itch, but it’s grown into something agencies and businesses are already finding useful.

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