What is the crowd's opinion of Nimbus Screenshot?

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Nimbus capture. Browser extension. Works well and if you put it in Chrome you have it accessible everywhere and any both Windows, OSX. https://nimbusweb.me/screenshot.php

If you're on Windows just use the Snipping tool.

If not, you can use a browser addon such as Nimbus Screenshot for Chrome/Firefox on desktop. Don't think mobile is supported, at least that's AFAIK.