Tab Sharing Without Screencasting
Hi HN, I've developed a Chrome extension that provides tab-sharing functionality without the use of screencasting. The product works by keeping the DOM on a mirrored page in sync with the driver's display. This is achieved by listening for DOM events on the driver's page and relaying them to the mirror as display instructions (e.g. add/remove a node, change attribute, scroll page, etc.). While the mirrored page gets the DOM structure directly from their peer via a WebRTC connection, the bulk of the resources and visible content (e.g. images, fonts, stylesheets, etc.) are downloaded…
Tab Sharing Without Screencasting launched on October 21, 2019 with 12 votes, #908 of 3,363 launches that month and more than 75% of that year's launches.
In plain words
Tab Sharing Without Screencasting is a Chrome extension that allows users to share browser tabs by synchronizing the DOM between two peers rather than screencasting. The driver's page sends DOM events to a mirrored peer via WebRTC, while both pages download resources directly from the original website. This approach delivers identical full-resolution displays and uses less bandwidth than traditional screencasting. It is designed for anyone needing to collaborate on web browsing.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hi HN, I've developed a Chrome extension that provides tab-sharing functionality without the use of screencasting. The product works by keeping the DOM on a mirrored page in sync with the driver's display. This is achieved by listening for DOM events on the driver's page and relaying them to the mirror as display…
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