Look Scanned is a pure frontend site that makes your PDFs look scanned! No need for printers and scanners anymore.

载入 PDF 之后，调整旋转、噪音值、模糊值、是否彩色、是否有边框之后，点击 PREVIEW 就能预览效果了。

See also:

• https://pdf.rere.re/ It's js only, nothing is sent to the server. It automatically makes the background of signatures transparent. The result is a raster pdf as if you printed, signed and scanned the document.