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An HD screenshot and a 15 second GIF, with a sleekshot.net mark. No account required.
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GIFs up to 10 minutes at HD. Sign up, then put the same email into the desktop app.
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4K, no watermark, MP4, blur, a bug-pack zip, and a command-line capture. Local recordings run until you stop them, with a 3 hour safety stop so a forgotten take cannot fill the disk. Video uploaded to this site stops at 10 minutes and is compressed.