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C# client library for the Api2Pdf.com REST API - Convert HTML to PDF, URL to PDF, Office Docs to PDF, Merge PDFs, HTML to Image, URL to Image, HTML to Docx, HTML to Xlsx, PDF to HTML, Thumbnail preview of office files

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Api2Pdf/api2pdf.dotnet

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api2pdf.dotnet

.NET bindings for Api2Pdf REST API

Api2Pdf.com is a powerful REST API for instantly generating PDF and Office documents from HTML, URLs, Microsoft Office Documents (Word, Excel, PPT), Email files, and images. You can generate image preview or thumbnail of a PDF, office document, or email file. The API also supports merge / concatenation of two or more PDFs, setting passwords on PDFs, and adding bookmarks to PDFs. Api2Pdf is a wrapper for popular libraries such as wkhtmltopdf, Headless Chrome, PdfSharp, and LibreOffice.

Add a dependency

nuget

Run the nuget command for installing the client Install-Package Api2Pdf -Version 2.0.1

Resources

Resources this API supports:

Authorization

Acquire API Key

Create an account at portal.api2pdf.com to get your API key.

Usage

Initialize the Client

All usage starts by initializing the client by passing your API key as a parameter to the constructor.

var a2pClient = new Api2Pdf("YOUR-API-KEY");

Once you initialize the client, you can make calls like so:

var request = new ChromeHtmlToPdfRequest
{
    Html = "<p>Hello World</p>"
};
var apiResponse = a2pClient.Chrome.HtmlToPdf(request);
Console.WriteLine(apiResponse.FileUrl);
Console.ReadLine();

For each endpoint there are common options you can specify too:

  • Inline - set to True if you would like the PDF to be opened up in a browser window. Set to false if you want the browser to "download" the file.
  • FileName - specify your own file name such as "sample.pdf". Inline option above should be set to false if you specify your own file name. If no file name is provided, a random file name will be generated for you.

Result Object

An Api2PdfResult object is returned from every API call. If a call is unsuccessful then success will show False and the error will provide the reason for failure. Additional attributes include the bandwidth out, seconds of compute, and the cost for the API call, typically very small fractions of a penny.

{
    'fileUrl': 'https://link-to-file-available-for-24-hours',
    'mbOut': 0.08830547332763672,
    'cost': 0.00017251586914062501,
    'seconds': 2,
    'success': True,
    'error': None,
    'responseId': '6e46637a-650d-46d5-af0b-3d7831baccbb'
}

wkhtmltopdf

Convert HTML to PDF

var request = new WkhtmlHtmlToPdfRequest
{
    Html = "<p>Hello World</p>"
};
var apiResponse = a2pClient.Wkhtml.HtmlToPdf(request);

Convert HTML to PDF (advanced wkhtmltopdf settings) View full list of wkhtmltopdf options available.

var options = new Dictionary<string, string>();
options.Add("orientation", "landscape");
options.Add("pageSize", "Letter");

var request = new WkhtmlHtmlToPdfRequest
{
    Html = "<p>Hello World</p>",
    FileName = "sample.pdf",
    Inline = true
    Options = options
}
var apiResponse = a2pClient.Wkhtml.HtmlToPdf(request);

Convert URL to PDF

var request = new WkhtmlUrlToPdfRequest
{
    Url = "https://www.api2pdf.com"
};
var apiResponse = a2pClient.WkHtml.UrlToPdf(request);

Convert URL to PDF (advanced wkhtmltopdf settings) View full list of wkhtmltopdf options available.

var options = new Dictionary<string, string>();
options.Add("orientation", "landscape");
options.Add("pageSize", "Letter");

var request = new WkhtmlUrlToPdfRequest
{
    Url = "https://wwww.api2pdf.com",
    FileName = "sample.pdf",
    Inline = true
    Options = options
}
var apiResponse = a2pClient.WkHtml.UrlToPdf(request);

Headless Chrome

Convert HTML to PDF

var request = new ChromeHtmlToPdfRequest
{
    Html = "<p>Hello World</p>"
};
var apiResponse = a2pClient.Chrome.HtmlToPdf(request);

Convert HTML to PDF (advanced Headless Chrome settings) View full list of Headless Chrome options available.

var options = new ChromeHtmlToPdfOptions
{
    Delay = 3000,
    HeaderTemplate = "<div style=\"font-size:12px;\">Header Content Here</div>",
    DisplayHeaderFooter = true,
    Landscape = true
}
var request = new ChromeHtmlToPdfRequest
{
    Html = "<p>Hello World</p>",
    FileName = "sample.pdf",
    Inline = true
    Options = options
};
var apiResponse = a2pClient.Chrome.HtmlToPdf(request);

Convert URL to PDF

var request = new ChromeUrlToPdfRequest
{
    Url = "https://www.api2pdf.com"
};
var apiResponse = a2pClient.Chrome.UrlToPdf(request);

Convert URL to PDF (advanced Headless Chrome settings) View full list of Headless Chrome options available.

var options = new ChromeUrlToPdfOptions
{
    Delay = 3000,
    HeaderTemplate = "<div style=\"font-size:12px;\">Header Content Here</div>",
    DisplayHeaderFooter = true,
    Landscape = true
}
var request = new ChromeUrlToPdfRequest
{
    Url = "https://www.api2pdf.com",
    FileName = "sample.pdf",
    Inline = true
    Options = options
};
var apiResponse = a2pClient.Chrome.UrlToPdf(request);

Convert HTML to Image or HTML to PNG

var request = new ChromeHtmlToImageRequest
{
    Html = "<p>Hello World</p>"
};
var apiResponse = a2pClient.Chrome.HtmlToImage(request);

Convert URL to Image or URL to PNG

var request = new ChromeUrlToImageRequest
{
    Url = "https://www.api2pdf.com"
};
var apiResponse = a2pClient.Chrome.UrlToImage(request);

LibreOffice

Convert any office file to PDF, image file to PDF, email file to PDF, HTML to Word, HTML to Excel, and PDF to HTML. Any file that can be reasonably opened by LibreOffice should be convertible. Additionally, we have an endpoint for generating a thumbnail of the first page of your PDF or Office Document. This is great for generating an image preview of your files to users.

You must provide a url to the file. Our engine will consume the file at that URL and convert it to the PDF.

Convert Microsoft Office Document or Image to PDF

var request = new LibreFileConversionRequest
{
    Url = "https://www.api2pdf.com/wp-content/themes/api2pdf/assets/samples/sample-word-doc.docx"
}
var apiResponse = a2pClient.LibreOffice.AnyToPdf(request);

Thumbnail or Image Preview of a PDF or Office Document or Email file

var request = new LibreFileConversionRequest
{
    Url = "https://www.api2pdf.com/wp-content/themes/api2pdf/assets/samples/sample-word-doc.docx"
}
var apiResponse = a2pClient.LibreOffice.Thumbnail(request);

Convert HTML to Microsoft Word or Docx

var request = new LibreFileConversionRequest
{
    Url = "http://www.api2pdf.com/wp-content/uploads/2021/01/sampleHtml.html"
}
var apiResponse = a2pClient.LibreOffice.HtmlToDocx(request);

Convert HTML to Microsoft Excel or Xlsx

var request = new LibreFileConversionRequest
{
    Url = "http://www.api2pdf.com/wp-content/uploads/2021/01/sampleTables.html"
}
var apiResponse = a2pClient.LibreOffice.HtmlToXlsx(request);

Convert PDF to HTML

var request = new LibreFileConversionRequest
{
    Url = "http://www.api2pdf.com/wp-content/uploads/2021/01/1a082b03-2bd6-4703-989d-0443a88e3b0f-4.pdf"
}
var apiResponse = a2pClient.LibreOffice.PdfToHtml(request);

PdfSharp

Merge PDFs from list of URLs to existing PDFs

To use the merge endpoint, supply a list of urls to existing PDFs. The engine will consume all of the PDFs and merge them into a single PDF, in the order in which they were provided in the list.

var pdfsToMerge = new List<string>() {"https://LINK-TO-PDF", "https://LINK-TO-PDF"};
var request = new PdfMergeRequest
{
    Urls = pdfsToMerge
};
var apiResponse = a2pClient.PdfSharp.MergePdfs(request);

Add PDF bookmarks to an existing PDF

var bookmarks = new List<PdfBookmark>()
{
    new PdfBookmark
    {
        Page = 0,
        Title = "Introduction"
    },
    new PdfBookmark
    {
        Page = 1,
        Title = "Second Page"
    }
}
var request = new PdfBookmarkRequest
{
    Url = "https://LINK-TO-PDF,
    Bookmarks = bookmarks
};
var apiResponse = a2pClient.PdfSharp.SetBookmarks(request);

Add password to existing PDF

var request = new PdfPasswordRequest
{
    Url = "https://LINK-TO-PDF",
    UserPassword = "password"
};
var apiResponse = a2pClient.PdfSharp.SetPassword(request);

Extract pages out of an existing PDF

More details here

var request = new PdfExtractPagesRequest
{
    Url = "https://LINK-TO-PDF",
    Start = 0,
    End = 0
};
var apiResponse = a2pClient.PdfSharp.ExtractPages(request);

Helper Methods

Delete a file conversion on command from API2PDF servers

By default, Api2Pdf will delete your generated file 24 hours after it has been generated. For those with high security needs, you may want to delete your file on command. You can do so by making an DELETE api call with the responseId attribute that was returned on the original JSON payload.

var a2pClient = Api2Pdf("YOUR-API-KEY");
var request = new ChromeHtmlToPdfRequest
{
    Html = "<p>Hello World</p>"
};
var apiResponse = a2pClient.Chrome.HtmlToPdf(request);

//delete file
a2pClient.Utilities.Delete(apiResponse.ResponseId);

void Api2PdfResult.SavePdf(string localPath)

On any Api2PdfResult that succesfully generated a file, you can use the handy SaveFile(string localPath) method to download the file to a local cache.

var a2pClient = Api2Pdf("YOUR-API-KEY");
var request = new ChromeHtmlToPdfRequest
{
    Html = "<p>Hello World</p>"
};
var apiResponse = a2pClient.Chrome.HtmlToPdf(request);
apiResponse.SaveFile("path-to-local-folder");

byte[] Api2PdfResult.GetFileBytes()

You can use GetFileBytes() method to download the file to a byte array.

var a2pClient = Api2Pdf("YOUR-API-KEY");
var request = new ChromeHtmlToPdfRequest
{
    Html = "<p>Hello World</p>"
};
var apiResponse = a2pClient.Chrome.HtmlToPdf(request);
var resultAsBytes = apiResponse.GetFileBytes();