There are multiple options available to make it work offline without internet connection. 

Install Native Packages

DGtalSharp.Pdf has native Operating System packages to work offline without downloading any native dependency. Install any (or all) of these packages depending on target OS.

For Windows 64

Install-Package DGtalSharp.Pdf.Win64

For Windows 86

Install-Package DGtalSharp.Pdf.Win32

For Linux or Docker

Install-Package DGtalSharp.Pdf.Linux

For MAC

Install-Package DGtalSharp.Pdf.Mac

Use Local Browser

DGtalSharp Pdf can work with local browsers, already installed on target OS. If you have Google Chrome or Microsoft Edge already installed on machine, Set a flag to use local browser instance instead of downloading dependencies

To enable local browser preference, use following line before calling initialization

//Use local browser installed on target system
DGtalSharp.Pdf.PdfGlobalSettings.PreferLocalBrowser = true;

Preference can also be configured to use MS Edge instead of Chrome

//Use local browser installed on target system
DGtalSharp.Pdf.PdfGlobalSettings.PreferLocalBrowser = true;
DGtalSharp.Pdf.PdfGlobalSettings.PreferLocalChrome = false;

In summary, following code would use local browser instead of downloading dependent components

//Use local browser installed on target system
DGtalSharp.Pdf.PdfGlobalSettings.PreferLocalBrowser = true;

//Set global preference before initializing Pdf component
await DGtalSharp.Pdf.PdfInitializer.Initialize();

Target system must have Chrome or MS Edge browser installed

Docker Image

Self host docker image html2pdf and use REST endpoints to create Pdf

Pull image

docker pull hisabir/html2pdf

Run docker

docker run -p 80:80 hisabir/html2pdf

Now open url http://localhost/swagger/index.html in browser

Port can be changed using parameter '-p'. Following command will run docker on port 8888

docker run -p 8888:80 hisabir/html2pdf

Now open url http://localhost:8888/swagger/index.html in browser

OpenApi(Swagger) specs can be used to generate pdf from url/html. To create a pdf from url, simply send a request to

http://localhost:8888/api/Pdf/google.com/google

Note: change url port in above request.

For more details, please refer to Docker page