See exactly how heavy any web page is — in kilobytes and megabytes. Fast way to spot bloated HTML before running a full performance audit.
Page size matters for two big reasons: speed (every kilobyte takes time to download, especially on slow mobile connections) and crawl budget (Google has limits on how much it'll fetch from your site per day). The HTML is just one component — total page weight also includes images, CSS, JS, fonts and third-party scripts — but if your raw HTML is already 2 MB, you have a problem before a single image even loads.
Enter the URL. The tool fetches the page through a CORS-friendly proxy and measures the response size in bytes, then converts to KB and MB for display. A verdict label classifies the result as Excellent (under 500 KB), Good (500 KB – 1.5 MB), Heavy (1.5–3 MB) or Bloated (over 3 MB).
Use it whenever a page feels slow, before optimising a long-form article, when investigating a Core Web Vitals failure, or when auditing a competitor's site to see why theirs loads faster than yours. Run it after every redesign — bloat creeps in through tracking scripts, web fonts and inline data attributes.
Healthy HTML is under 100 KB for most blog posts. Over 500 KB usually means inlined CSS, base64 images, or massive JSON payloads inside data attributes. Move CSS to external files (browser caches them), serve images via <img> with lazy loading, and minify HTML in production.
No — only the raw HTML. Images, CSS and JS are loaded as separate requests. For total page weight use Chrome DevTools Network tab.
Under 500 KB HTML is excellent. Most well-built sites land between 50–200 KB.
Common culprits: inline base64 images, embedded JSON for client-side hydration, lots of inline SVG, no HTML minification.
Explore more website management tools on the tool hub — or jump straight to the Website SEO Score Checker, Online Ping Website Tool, Page Speed Test.