Signature on a transparent PNG Turn a photo of ink on white paper into a cropped PNG with the paper removed. Details Photograph ink on white paper, then use this to crop the signature and drop the paper. The result is a PNG you can stamp onto another page. The paper needs to be close to one color. Lines, creases, and shadows stay behind as specks. This does not create a legal certificate. Category: File conversion Page: /tools/signature-png Text: /tools/signature-png.txt Limits The paper must be close to one flat color. Lined paper and shadows will leave specks. Raise tolerance carefully. Steps 1. Photograph the signature on a plain background. 2. Sample the paper color. 3. Download the trimmed PNG. Questions Is this a legal signature? No. It is an image of ink. It does not certify anything. Why is the file still large? Use the compressor afterward if a portal has a size cap. Nothing is uploaded. Closing the tab drops the file. The photo is not uploaded.