Global DOM Optimizer

Reduce offscreen rendering work on long pages with automatic viewport-aware containment. No content removal or data collection.

Make long, content-heavy websites feel smoother. Global DOM Optimizer automatically reduces offscreen rendering work while keeping webpage content intact. Tired of laggy scrolling in long AI conversations, documentation, articles, and endless feeds? Modern sites can have hundreds of text blocks, images, and interface elements on a single page. Global DOM Optimizer detects eligible content outside your view and applies native browser rendering containment, so the browser can skip unnecessary layout and painting work until you scroll back. **HOW IT WORKS** The extension finds suitable blocks within large pages—including deeply nested conversations and independent scroll areas—and uses Chromium's native content-visibility optimization to reduce work on offscreen sections. Content is not deleted, replaced, or downloaded. It remains in the page and is revealed automatically as you approach it. **KEY FEATURES** - **Automatic offscreen optimization** — Works in the background on supported HTTP and HTTPS websites, with no manual setup. - **Long-page support** — Targets eligible paragraphs, headings, articles, code blocks, lists, and image sections. - **Smooth content restoration** — Offscreen blocks are revealed as you scroll toward them. - **Smart detection** — Recognizes nested scrolling containers and dynamically added page content. - **Efficient scanning** — Uses cached spatial regions and incremental updates to avoid unnecessary full-page scans. - **Simple controls** — Turn optimization on or off globally, or disable it for a specific website. - **Live diagnostics** — See managed and hidden blocks, estimated offscreen coverage, scan counts, scan time, and scrolling-region details. - **Privacy by design** — Runs locally, without an account, analytics, or uploading page content to a server. **BUILT FOR LONG, BUSY PAGES** Especially useful for browsing long conversations (including ChatGPT), extensive documentation, research articles, tutorials, and content-heavy feeds. Installation is simple: add the extension, open a page, and it automatically identifies safe sections to optimize. **IMPORTANT TO KNOW** Global DOM Optimizer reduces rendering work where native containment is safe. It does not remove DOM nodes, suspend background scripts, block ads, or promise a particular FPS, CPU, or RAM improvement. The percentage in the popup estimates offscreen scroll-height coverage—not measured performance savings. Some interactive or complex page elements are intentionally left untouched to preserve functionality. If a website behaves unexpectedly, switch off optimization for that site with one click. Made with love by ArkFlame Studios https://arkflame.com