The captures are usually a little clearer than a different screenshot Add-on I've tried before, but when my Firefox "automatic update"d it made the button that was right there by the address bar go away! Yet it still had the name in the "Library" but it didn't work! So I had to search for it & reinstall to actually use it again (another thing I'm beginning to hate about Firefox auto reset after updating like Windows & Smartphone servers did/does). Glad it still exists, because sometimes the only way to explain &/or show evidence of something you see/saw on the screen is by screenshot capture. lol