Commercial PDF toolkit for .NET
PDF editing for .NET, without licensing friction.
ZingPDF gives you a practical .NET API for page editing, forms, encryption, metadata, text extraction, watermarking, and save workflows. Evaluate it freely, then subscribe when commercial use begins.
- Edit pages, forms, metadata, watermarks, and text through one API
- Include HTML-to-PDF conversion when your product needs it
- No license server, no activation keys, no deployment hoops
- Bundling unmodified binaries in your own application is allowed
Intuitive API
using var pdf = Pdf.Load(stream);
var form = await pdf.GetFormAsync();
var metadata = await pdf.GetMetadataAsync();
metadata.Title = "Invoice Pack";
await pdf.AddWatermarkAsync("PAID");
await pdf.EncryptAsync("user-password");
await pdf.SaveAsync(output);Built for teams who want a PDF library that is easy to integrate, easy to evaluate, and simple to license.
Page editing
Forms
Encryption
Metadata
Watermarks
Text extraction
Platform Support
Built for .NET 8 on the platforms teams actually deploy to.
Licensing
Choose a license that fits your team.
Commercial use requires an active subscription with enough seats for the developers using ZingPDF. Non-commercial use and evaluation do not require a paid license. For larger teams, custom terms, or deals, contact us directly.
Why teams buy
Practical capabilities, small integration surface.
Useful PDF operations
Create, inspect, edit, merge, watermark, compress, encrypt, decrypt, and update metadata through one library designed for day-to-day product work.
Forms support
Work with text, choice, checkbox, radio, push button, and signature field types through the high-level API without dropping into low-level PDF internals for common tasks.
Straightforward licensing
Public packages, clear commercial terms, and a subscription model that stays out of the way during local development, CI, and deployment.
Developer docs
Quick start guidance, forms, metadata, encryption, save semantics, and API reference live on a dedicated documentation site.
FAQ
What buyers usually ask first.
What does the commercial license actually cover?
An active paid subscription with sufficient seats allows commercial use of ZingPDF, including bundling the unmodified binaries inside your own application.
Can I evaluate ZingPDF before paying?
Yes. Evaluation and other non-commercial use are allowed without a fixed trial period. You only need a paid subscription when commercial use begins.
Can I ship ZingPDF inside my own product?
Yes. Bundling the unmodified binaries in your own application is allowed, provided the required licensing terms, notices, and attribution remain intact.
What if my company needs procurement, invoicing, or custom terms?
That is what the Enterprise option is for. It gives you a direct path for larger seat counts, custom terms, and support expectations.
How mature is the library today?
ZingPDF already covers practical workflows like page editing, forms, metadata, encryption, watermarking, compression, extraction, and save behavior. The docs and API reference are public so you can assess fit before rollout.