Page Size Checker
Check the HTML size and load weight of any web page. Returns KB size, load time, image/script/CSS counts and a visual size gauge with performance rating.
✅ Free 📏 Size + Load Time 📊 Asset Counts 🔒 Private
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Page Size Checker📏
HTML Size in KB
Returns the compressed HTML document size in kilobytes.
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Load Time
Measures actual time to fetch the page including network latency.
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Asset Counts
Counts img, script and CSS link tags in the HTML.
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Size Rating
Colour-coded gauge: green <50KB, amber 50–200KB, red >200KB.
⭐ User Reviews
A
Alex T.
Yesterday
⭐⭐⭐⭐⭐
Fast and accurate. Got the data I needed in under 3 seconds. Clean interface with no ads cluttering the results.
Network ToolsS
Sara K.
2 days ago
⭐⭐⭐⭐⭐
I use this daily for domain research. The structured output with copy buttons saves me tons of time compared to raw whois terminals.
Network ToolsD
Dan M.
1 week ago
⭐⭐⭐⭐⭐
The results are consistently accurate and the copy-per-field feature is incredibly useful for building reports.
Network ToolsL
Laura B.
2 weeks ago
⭐⭐⭐⭐⭐
Finally a tool that gives clean, readable output. The related tools panel lets me jump from one check to the next without losing my query.
Network Tools📖 How to Use
1
Enter URL
Type the full page URL you want to measure.
2
Click Check Size
The page HTML is fetched and its size measured.
3
Read the gauge
Colour-coded bar shows green, amber or red performance rating.
4
Review asset counts
Image, script and CSS tag counts give a quick asset inventory.
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❓ FAQ
What is a good page size for SEO and performance?+
Google recommends keeping page HTML under 100KB. Total page weight (including images and scripts) should ideally be under 1–2MB. Smaller pages load faster, reducing bounce rate and improving Core Web Vitals scores.
What is the difference between HTML size and total page size?+
HTML size is just the initial document. Total page size includes external CSS, JavaScript, images, fonts and other resources. A small HTML document can still produce a large total page weight.
How do I reduce page size?+
Minify HTML, CSS and JavaScript. Compress images using WebP format. Enable GZIP/Brotli compression on the server. Remove unused CSS and JavaScript. Use a CDN. Lazy-load images below the fold.
What are Core Web Vitals?+
Core Web Vitals are Google's performance metrics: LCP (Largest Contentful Paint — loading), FID/INP (First Input Delay / Interaction to Next Paint — interactivity), CLS (Cumulative Layout Shift — visual stability). Page size affects LCP directly.
Does this tool measure all resources (images, CSS, JS)?+
This tool measures the HTML document size only — not the total page weight including external resources. For complete page weight analysis, use browser DevTools Network tab or tools like GTmetrix and WebPageTest.