Website Performance Grader
Enter your website URL and get an instant performance grade across mobile responsiveness, page speed, SEO, security, and accessibility.
Last updated: March 2026
📊 This is a live demo. Marketing teams embed this tool on their website to qualify leads — visitors score themselves and you see their results before the first call. See plans →
↑ This is exactly what your website visitors see when you embed this tool. The only difference: their results are gated behind an email capture form, and every input is sent to your CRM.
What is Website Performance Score?
A website performance score grades your site across mobile responsiveness, page speed, SEO fundamentals, security, and accessibility. It identifies the specific technical issues that reduce conversions and search rankings.
The Formula
Performance Score = Sum of (Rule Weight × Pass/Fail) across 10 criteria
Each rule is weighted by its impact on user experience and SEO. Mobile and speed carry the highest weight.
Worked Example
A small business website is graded across 10 performance criteria.
- Mobile responsive: Pass (12 points)
- Page speed under 3 seconds: Fail (0 of 12 points)
- Meta title present: Pass (10 points)
- Meta description present: Pass (10 points)
- Heading hierarchy correct: Fail (0 of 10 points)
- SSL active: Pass (10 points)
- Images optimised: Fail (0 of 8 points)
- Alt text present: Pass (8 points)
- Clear CTA: Pass (10 points)
- Structured data: Fail (0 of 10 points)
📌 The site scores 60/100 — passing on fundamentals but losing 40 points on speed, headings, images, and structured data. Fixing page speed alone could improve conversions by 7% per second saved.
Why This Matters
Conversions
Each second of page load delay reduces conversions by 7%. A site scoring below 50 is likely losing half its potential leads to poor performance.
Search Rankings
Google uses Core Web Vitals as ranking signals. Sites with better performance scores rank higher and receive more organic traffic.
User Trust
Missing SSL, slow loading, and poor mobile experience make visitors leave. 53% of mobile users abandon sites that take over 3 seconds to load.
Common Mistakes
❌ Ignoring mobile performance
Over 60% of web traffic is mobile. Testing only on desktop misses the majority of your audience.
❌ Uploading uncompressed images
Large images are the most common cause of slow page loads. Compress images and use modern formats like WebP.
❌ Skipping structured data
Structured data enables rich snippets in search results, increasing click-through rates by 20-30%.
Industry Benchmarks
| Category | Good | Average | Poor |
|---|---|---|---|
| Small Business Sites | 80-100 | 50-70 | Below 40 |
| Agency/SaaS Sites | 85-100 | 65-80 | Below 55 |
| Ecommerce Sites | 75-100 | 55-75 | Below 45 |
Source: Google Core Web Vitals Report and HTTP Archive Data
Benchmark data sourced from Google Core Web Vitals Report and HTTP Archive Data.
From analysing marketing tool performance across hundreds of websites, the tools that let visitors grade or score themselves convert 4x better than generic contact forms — because the visitor gets personalised results, not a 'we'll get back to you' promise.
One of the most common mistakes we see when working with clients: ignoring mobile performance. Over 60% of web traffic is mobile. Testing only on desktop misses the majority of your audience.
Embed This Grader on Your Website
Every visitor who uses your embedded grader becomes a qualified lead. Their inputs, results, and marketing metrics are captured and sent to your CRM — before you ever pick up the phone.
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