SignatureClear

SignatureClear is deliberately narrow, and that is its main selling point. Instead of a general cutout engine that guesses at edges, it is tuned for the specific problem of pen ink on paper: black and blue stroke extraction, preservation of fine lines and pen pressure, and removal of the yellow tint, shadows, and dark spots that show up in phone photos of a signature. The v1.0.0 feature set is small but coherent — upload, review against the original, download a 4K transparent PNG, and revisit past results from a history drawer. Two practical touches stand out: automatic client-side compression of high-resolution smartphone photos, which keeps uploads fast on a data connection, and the fact that the PNG stays transparent when placed into Word or a PDF, so you are not converting back to JPG and reintroducing a white box. The bilingual English/Chinese interface is unusual for a tool this size and suggests the vendor is targeting cross-border document and e-commerce work. Where it falls short is scale. There is no documented API, no batch processing, and no manual edge-refinement control — you get the model's output, and the vendor's own sample still shows a little light edge residue. Credits are per-image and the free tier does not refresh monthly, so a 30-day trial is genuinely a trial rather than an ongoing free tier. The retired Starter tier widens that gap: at $9.99/month for 300 credits, you are paying roughly three cents per signature, which is fine for steady professional use and poor value if you only need a handful of PNGs a year. Compare that with general removers that bill less per image but are not tuned for pale ink and faint strokes. As a privacy posture, auto-deletion within 2 days plus a no-training commitment is about as much as a web upload tool can offer, but the honest framing is still: only upload signatures you are authorized to use, and check the privacy policy yourself.