Mappertje is a productivity chrome extension. it's a free extension , it has 65 active users since released its first version, it earns an average rating of 0.00 from 0 rated user, last update is 1243 days ago.
This extension is supposed to be used with a beamer/projector, preferably as a second monitor. You can aim the projector at a rectangular area, where you want your source feed to appear. Use your webcam, your screen or any window open on your desktop as a source. You can correct the source (perspective, rotate, flip) by dragging each corner. Additionally you can crop out a rectangular area in case the source feed contains stuff you don't need. Mappertje also integrates directly with my other extension: Pop-out Jitsi Meet: https://chrome.google.com/webstore/detail/pop-out-jitsi-meet/boklbbjieahngbnhdmlhldjjibdnnbcn When you've got both extensions installed you can also use all (remote) videos in the Jitsi conference as a source for projection mapping.
You could download the latest version crx file or older version files and install it.
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You could find more help information from mappertje support page.
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More about manifest_file of mappertje.
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