Page Size Checker
Measure the total weight of a page: HTML, images, JavaScript, CSS and fonts, see the largest files and get practical fixes to load faster.
What this tool checks
Every result comes with a clear explanation and a prioritised fix, so you know exactly what to do next.
Total weight
Estimated transfer size of the page and its files.
Images
Large and non-modern image formats.
JavaScript and CSS
Script and stylesheet weight and count.
DOM size
Number of HTML elements (Lighthouse warns above about 1,500).
Third parties
External domains your page depends on.
Compression
Gzip/Brotli and caching headers.
Three steps to better results
No account, no API key and no limits. Just enter your details and get answers in seconds.
Enter a URL
Any public page.
See the breakdown
Size by type and the largest files.
Slim it down
Follow the prioritised speed tips.
Frequently asked questions
Quick answers about the Page Size Checker.
Still have a question?
Email us and a real person replies within one business day.
What is a good page size?
Lighter is better. Aim for under about 1.5 MB on mobile pages; heavy pages over 3 MB load slowly on mobile networks.
Does page size affect SEO?
Indirectly. Page weight affects Core Web Vitals such as Largest Contentful Paint, which are part of Google’s page experience signals and strongly affect conversions.
Why is the real size sometimes bigger?
We measure files referenced in the HTML. Files loaded later by JavaScript or inside iframes are not included, so use PageSpeed Insights for the full picture.
What usually makes pages heavy?
Uncompressed images, unused JavaScript from plugins and widgets, multiple font files and page builder markup.
What is the quickest win?
Resize and compress images and serve them as WebP or AVIF. It often halves page weight.
Want us to fix it for you?
Our team turns these results into rankings. Book a free strategy call and get a clear, prioritised SEO plan for your website.
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