A API Masters

Signature pad framework + PDF generator

Capture signatures. Generate signed PDFs.

API Masters sells a drop-in signature pad framework for websites and a PDF Generator script that turns captured signatures into polished contracts, forms, invoices, receipts, and approval records.

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Product mockup showing a signature pad interface and PDF previews

Two products, one signing workflow

Everything needed to collect, render, and deliver signed documents

Signature Pad Framework

A browser-ready signature capture framework for onboarding, agreements, consent forms, delivery proofs, contracts, and custom website flows.

  • Touch, mouse, and stylus signing
  • Works with PHP, React, Vue, and vanilla JS
  • Clear/reset controls and consent-ready events
  • Export signatures as image data for storage or PDFs

PDF Generator Script

A document generation script for turning form data and captured signatures into clean PDFs that can be downloaded, emailed, or saved with your application records.

  • Invoices, receipts, reports, and contracts
  • Signature placement inside PDF templates
  • Server-side friendly integration surface
  • Downloadable document output for users

Simple API hooks

Attach signature capture to any form and send the payload to your backend.

Audit-friendly flow

Collect buyer details, signing intent, timestamps, and generated references.

Bundle-ready

Use the pad alone, the PDF script alone, or combine both into one workflow.

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Individual

Solo license
$150

Best for freelancers, founders, and single-project signing flows.

Business

Team license
$250

Made for agencies, product teams, and businesses processing signed records.