Nutrient (PSPDFKit)

Nutrient (formerly PSPDFKit) is a Vienna-based document SDK and platform that powers PDF and document workflows for over half a billion users worldwide. It supplies developer SDKs for creating, editing, converting, annotating, redacting, OCR, filling forms and signing PDFs across web, mobile and desktop, plus cloud-based document processing, low-code Microsoft 365 solutions and a workflow automation platform. The product offers hundreds of out-of-the-box features. Pricing is custom, set per usage, with the option to unlock more features and products as demand grows; reviews note that contracts often run for three years.