Developer Uses IndexedDB to Cut Repeated HTML Transfers on Lightweight Sites

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A developer has built a system that stores a site's main HTML document in the browser's IndexedDB on a user's first visit, then restores it locally on all subsequent visits instead of re-downloading it. The approach uses two files — a lightweight loader and the main HTML body — hosted on the same domain, since IndexedDB is managed per origin. A drag-and-drop tool has been released that converts any standard HTML file into this two-file format and packages the output as a ZIP archive. The method is best suited for near-single-page sites with large HTML files that are opened repeatedly by the same users. External resources such as images, CSS, and JavaScript are still fetched normally, and browser caching continues to function alongside this system.

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