Online Page Source Viewer
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Why you need to view a page's source code
When a web browser loads a website, it receives the source HTML from the server and as it processes that HTML, it can execute JavaScript that significantly changes the page structure, loads additional content, and forms the final DOM. That's why what you see through "View Page Source" in a browser is often different from what actually gets displayed to the user. Search engine crawlers, in turn, don't always fully execute dynamic scripts, which makes the difference between raw HTML and the rendered version of a page an important factor in SEO.
Raw HTML and DOM after JavaScript rendering
Our online tool lets you get both versions of a page. The "Source HTML" mode shows the HTML exactly as the server sends it to the browser, without executing any scripts. The "After JavaScript Execution" mode loads the page in an isolated, real browser environment, waits for JavaScript to finish running, and returns the final DOM, including elements added dynamically. Comparing these two versions helps you understand which content search engines can index without issues and which requires full rendering.
Besides the HTML code, the tool shows the network requests a page makes while loading, browser console messages including JavaScript errors and logs, and page load and DOM build timing. This data helps you spot broken scripts, slow-loading resources, and issues with third-party file loading.