Boost Your Google Rankings with a Free Core Web Vitals Checker
Agencies Charge $500/Month for Speed Audits. I Built a Free Alternative.
Over the past year, I've noticed something interesting.
Many SEO agencies charge anywhere from $300 to $500+ per month just to monitor website speed and provide performance recommendations. While these audits are valuable, they can be out of reach for freelancers, startups, and small business owners.
So I decided to build something for myself.
The result is Core Web Vitals & Speed Forensics, a free tool available through SerpSpur.
Why I Built It
I wanted a tool that would:
Crawl an entire website
Analyze Core Web Vitals
Detect performance bottlenecks
Highlight technical issues impacting speed
Provide actionable fixes instead of generic scores
Most tools tell you what is wrong.
I wanted something that would also help explain why it's happening.
The Surprise Discovery
When testing the tool on my own site, it uncovered a major issue I had completely overlooked.
A render-blocking CSS file was delaying page rendering and hurting my Largest Contentful Paint (LCP).
The fix took only a few minutes.
After implementing the recommendation:
✅ Mobile Performance Score: 65 → 92
✅ Faster page rendering
✅ Better user experience
✅ Improved Core Web Vitals metrics
Sometimes one small issue can have a massive impact.
What the Tool Checks
Core Web Vitals & Speed Forensics analyzes:
Largest Contentful Paint (LCP)
Cumulative Layout Shift (CLS)
Interaction to Next Paint (INP)
Render-blocking resources
CSS and JavaScript bottlenecks
Image optimization opportunities
Caching and compression issues
Mobile performance problems
Technical SEO speed factors
Who It's For
SEO professionals
Website owners
Freelancers
Agencies
SaaS founders
Bloggers
Ecommerce stores
If page speed affects your traffic, conversions, or rankings, you'll probably find something useful.
The Goal
The goal wasn't to create another flashy dashboard.
I wanted a practical tool that surfaces real performance problems and gives clear next steps.
No fluff.
Just data.
If you'd like to test your website and see what might be slowing it down, you can try it here:
