Digital Signature Image Maker

Digital Signature Image Maker turns your handwritten signature into a clean transparent PNG you can drop into contracts, PDFs, invoices, offer letters and email footers. Draw it directly with a mouse, trackpad, stylus or finger, or upload a photo of a signature written on paper and let the tool strip the paper away.

When you upload a scan, everything lighter than the threshold you set is made transparent, leaving only the ink strokes. You can change the ink color, adjust the pen thickness while drawing, and export at high resolution so the signature stays smooth when a PDF is printed. Because the file never leaves your browser, your signature is never stored on any server.

Nothing you open here is uploaded. The entire operation runs inside your browser tab using the Canvas API and WebAssembly, which means there is no upload queue, no server-side file-size cap, no watermark and no account. You can even go offline after the page has loaded and the tool will keep working. When you close the tab, every trace of your file disappears from memory — which is exactly what you want when you are handling ID documents, contracts, private photos or unreleased product shots.

Because the work happens on your own hardware, processing is effectively instant for typical photos and still comfortable for 50-megapixel files on a modern laptop or phone. There are no daily limits, no paywalls after five files, and no queue behind other users. Everything is free, unlimited and ad-supported, and the layout reserves fixed space for ads so the page never jumps while you work.