CoherentPDF is a .NET interface to the cpdf pdf tools. More information, including commercial licenses can be found at https://www.coherentpdf.com/
It is distributed under the AGPL - see LICENSE.md. If you are unable to abide by the terms of the AGPL, you will need a commercial license.
For commercial licenses, email contact@coherentgraphics.co.uk or visit https://www.coherentpdf.com/
- Quality Split and Merge, keeping bookmarks. Extract pages. Split on Bookmarks.
- Encrypt and Decrypt (including AES 128 and AES 256 encryption)
- Scale, rotate, crop and flip pages. Scale pages to fit
- Copy, Remove and Add bookmarks
- Stamp logos, watermarks, page numbers and multiline text. Transparency.
- Supports Unicode UTF8 text input and output
- Put multiple pages on a single page
- List, copy, or remove annotations
- Read and set document information and metadata
- Add and remove file attachments to document or page.
- Thicken hairlines, blacken text, make draft documents
- Reconstruct malformed files
- Detect missing fonts, low resolution images
- Read and write PDF as JSON
The DLL libcpdf is required. This is free for non-commercial use. Commercial
use requires a license. The DLL can be obtained here for all platforms here:
https://github.com/coherentgraphics/cpdflib-binary
Before using the library, you must make sure your project or build environment has access to the cpdf DLL, which is not part of the .NET assembly obtained from NuGet. You can add it to a Visual Studio project as a file, set to copy-to-output-folder. Or, you can install it in a standard location, such as the Windows system folder.
The DLL libcpdf.dll provided in this folder must be renamed to cpdf.dll, for .NET to be able to find it.
Full manual (required reading): https://coherentpdf.com/dotnetcpdflibmanual.pdf
Follow the instructions at the end of Chapter 1 to write your first program.
In addition, the NuGet package provides Intellisense documentation with each function.
mailto:contact@coherentgraphics.co.uk
Bug reports: https://github.com/coherentgraphics/dotnet-libcpdf