Website Page Size Checker

Googlebot downloads and processes the first 2 megabytes (2,097,152 bytes) of a page's raw HTML. Any content beyond this limit is effectively invisible to Google. This applies to the HTML document itself — not external CSS, JavaScript, or images that are loaded separately. According to HTTPArchive data, the median webpage HTML is only 33 KB, so 99.99% of websites are well under this limit.

Raw HTML size is the total weight of the HTML document text that a browser (or crawler) downloads. It includes all markup tags like <div>, <span>, <script>, and <style>, as well as any inline JavaScript, inline CSS, and the text content itself. It does NOT include external files linked via <link> or <script src="..."> tags — those are separate requests.

Based on the latest HTTPArchive data, the median HTML page size is approximately 33 KB. The 75th percentile is around 80 KB, and the 90th percentile is about 155 KB. Pages exceeding 500 KB of raw HTML are considered unusually large and may benefit from optimization. Pages over 2 MB are extreme outliers.

Common causes of HTML bloat include: inline JavaScript and CSS (instead of external files), server-side rendered content with heavy hydration data (common in React/Next.js apps), excessive DOM elements (deeply nested divs), large inline SVGs, embedded base64 images, auto-generated code from page builders, and large data payloads embedded in the HTML for client-side rendering.

Key optimization strategies include: externalize inline JavaScript and CSS into separate files, minimize SSR hydration data, reduce DOM depth and element count, compress or externalize SVGs, remove unused HTML elements, use lazy loading for below-the-fold content, implement code splitting, and avoid embedding large JSON data blobs in the HTML. Server-side compression (gzip/brotli) also significantly reduces transfer size.

Yes, larger HTML files take longer to download, parse, and render, which directly impacts Core Web Vitals metrics like Largest Contentful Paint (LCP) and Interaction to Next Paint (INP). While the 2 MB crawl limit is rarely an issue, unnecessarily large HTML can slow down page rendering, increase Time to Interactive, and negatively affect user experience — all of which indirectly impact search rankings.

Google's 2 MB limit applies to the raw (uncompressed) HTML size, not the compressed transfer size. While gzip/brotli compression significantly reduces the data transferred over the network (typically by 60-80%), Googlebot measures the uncompressed HTML document size for its crawl limit. Our tool shows both the raw size and an estimated gzipped size for reference.