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Signature Detector

Find signatures in documents with one API call

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A REST API that finds signatures in images and PDFs and returns bounding boxes with confidence scores. Check whether contracts, forms and KYC documents are signed. $0.0001 per image or PDF page, 10 free credits, credits never expire, no subscription.

PH · launched Nov 6, 2026 · 1 upvote (top 65%) · 0 views

Niche: document processing and ocr software · 202 launches, 16 in the last 7 days ▼ -27% · Explore this niche →

Category and tags
  • Horizontal
  • Dev tools
  • Developer
  • AI-native
  • Commercial product
  • API
  • Developer Tools
  • Artificial Intelligence

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More like this: all 202 launches in document processing and ocr software →

Could you build this?

Partial The API wrapper and billing are simple, but reliable signature detection requires a trained computer-vision model, and off-the-shelf models won't perform well on scans without labeled data.

What it would actually take: Start from an open object-detection model such as YOLO or DETR and fine-tune it on a labeled dataset of signed and unsigned documents, served behind a REST API with per-page metering. The hard part is acquiring and labeling diverse document-signature data and reaching accuracy suitable for KYC, which requires ML engineering expertise.

Competitors

Other products that read as similar to this one : 306 launches clear the similarity bar, closest 8 shown.

Attention rank: #127 of 307 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 370 days after the earliest competitor.

  • DollarSign.io · ph · 2026-09-19 · 2 upvotes · similarity 0.57
  • Docustay · ph · 2026-10-27 · 1 upvotes · similarity 0.56
  • Sign PDF · ph · 2026-11-03 · 1 upvotes · similarity 0.53
  • Psygned · ph · 2026-10-20 · 2 upvotes · similarity 0.52
  • Firma.dev · ph · 2026-06-12 · 324 upvotes · similarity 0.51
  • SignWith · ph · 2026-10-16 · 216 upvotes · similarity 0.50
  • Receipt Keeper · ph · 2026-09-12 · 1 upvotes · similarity 0.48
  • PAdES Studio · ph · 2026-10-07 · 2 upvotes · similarity 0.46

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