SignatureClear

Pick SignatureClear if the job is literally "turn a paper signature into a transparent PNG for a document." It's built for that and nothing else, and the review step is the part that earns its keep: you see the cutout against a checkerboard for free, ten times a day, before a credit leaves your account. In practice that means a notary or HR coordinator can retry a bad phone photo without feeling nickel-and-dimed. When to pass: high-volume teams that need an API, batch upload or shared seats. None of those appear on the site, so if signature cleanup is a pipeline rather than a chore, look elsewhere. Same for anyone who wants manual edge refinement — this is adjust-nothing automation, and very blurry or shadowed sources are met with "retake the photo," not retouching tools. The closest alternative is a general remover such as remove.bg. Those handle portraits, products and arbitrary objects more broadly and are fine for casual cutouts. SignatureClear's argument is narrower and better: pen strokes stay, pale ink survives, and the output is a clean transparent PNG sized for insertion into Word or a PDF. If your only cutout need is a signature once a quarter, a general tool on a free tier may be enough — but the drag-to-compare check and the document-specific guidance are what make this the safer default for paperwork. Where it bites: credits sit on a 365-day clock, so stockpiling the 60-pack ahead of need is only smart if you actually sign documents regularly. Check each result before reuse anyway — the site's own before/after sample admits light edge residue remains, and results track source quality. And keep the original file; the vendor's guidance to preserve the PNG rather than re-saving to JPG is the difference between a transparent signature and a white box in