How it plugs in
—Public API
NoOpen source
YesFree tier
Signal on PDF SDKs6.5#3 of 31
The .NET PDF Library provides APIs to create, edit, secure, convert, and extract data from PDF documents in .NET applications.

Pricing
- Document SDK$1,199 / developer / year · Separate product license · per developer · annual document or end-user volume options$1,199/yr
As syncfusion.com lists them, checked 3 Oct 2026.