Part of the Speed audit
Check your page speed in under 60 seconds
Slow pages lose visitors and rank lower. SiteCurl checks 11 speed factors and tells you where the biggest wins are.
No signup required. Results in under 60 seconds.
What this check does
SiteCurl checks 11 factors that affect page load speed: HTML page size, JavaScript file count, CSS file count, response compression (gzip/brotli), font loading strategy, resource hints (preconnect), render-blocking stylesheets, third-party scripts, image dimensions, lazy loading, and responsive images.
These are server-side and markup checks. They catch the issues you can fix in your code or server setup without needing a browser-based performance lab. Each finding includes what was measured and what the recommended threshold is.
Why it matters
Every extra second of load time costs you visitors. Studies show that a one-second delay in page load can drop conversions by 7%. Mobile users are even less patient. If your page takes more than 3 seconds to load, over half your visitors may leave.
Speed is also a search ranking factor. Google has confirmed that page speed affects rankings, especially on mobile. Faster pages get more traffic and keep more of the visitors they get.
How to fix it
Start with the biggest wins: enable compression (gzip or brotli) on your server, reduce JavaScript file count by combining or deferring scripts, and add lazy loading to images below the fold.
For large pages, check if you are loading content that is not needed on first render. Defer non-critical CSS, remove unused JavaScript, and serve properly sized images using srcset. These changes often cut page size by 50% or more.
After each round of fixes, run another scan to see the impact. SiteCurl tracks your speed score over time so you can see if your optimizations are holding.
Example findings from a scan
Page size is 245 KB (warning threshold: 100 KB)
12 JavaScript files loaded (recommended max: 10)
No gzip or brotli compression detected
Related checks
Frequently asked questions
Does SiteCurl measure Core Web Vitals?
No. SiteCurl checks server-side and markup factors like page size, compression, and script count. For Core Web Vitals (LCP, FID, CLS), use Lighthouse or PageSpeed Insights.
What is the most common speed issue?
Missing compression and large page sizes are the two most common. Enabling gzip or brotli on your server is usually a one-line change that cuts transfer sizes by 60 to 80 percent.
How often should I check page speed?
Monthly is a good start. New plugins, tracking scripts, and content updates can slow pages down over time. A regular scan catches regressions early.
Can I check speed without signing up?
Yes. The free audit checks all 11 speed factors on your home page as part of a full seven-category scan. No signup required.
Is this the same as Lighthouse performance?
No. Lighthouse measures browser-based metrics like paint times and layout shift. SiteCurl checks server and markup factors. They complement each other.
Check your page speed now