Spire.PDF 12.9.1

Powerful .NET PDF Library for Processing, Editing, and Manipulating PDF Files

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Spire.PDF for .NET is a professional PDF API applied to creating, writing, editing, handling and reading PDF files without any external dependencies within .NET ( C#, VB.NET, ASP.NET, .NET Core, .NET 4.0，.NET 9.0, .NET10.0, MonoAndroid and Xamarin.iOS ) application.

Using this .NET PDF library, you can implement rich capabilities to create PDF files from scratch or process existing PDF documents entirely through C#/VB.NET without installing Adobe Acrobat.

PDF Processing Features

• Generate/write/read/edit PDF documents.
• Supports 14 core, Type 1, True Type, Type 3, CJK & Unicode fonts.
• Extract images, text, pages and attachments from a PDF document with great speed and accuracy.
• Merge/split PDF documents and overlay documents.
• Convert HTML to PDF, XPS to PDF, Text to PDF and images to PDF to PDF and convert PDF to Excel, convert PDF to Word, convert PDF to images with efficient performance.
• Encrypt/Decrypt PDF, modify PDF passwords and create PDF digital signatures.
• Add and modify text/image bookmarks.
• Add text in Footer/Header.
• Export database table and pictures to PDF.
• Add Hyperlinks, work with actions/Javascript Action/Action Chain/Action Annotation.
• Add/remove/edit/fill fields.

Conversions

• Convert Webpage HTML to PDF, HTML ASPX to PDF
• Convert Image to PDF
• Convert Text to PDF
• Convert PDF to HTML
• Convert XPS to PDF
• Convert PDF to SVG
• Convert PDF to XPS
• Convert PDF to Image
• Convert PDF to Word
• Convert PDF to Excel
• Convert PDF to Markdown

Support Environment

• Fully written in C# and also support VB.NET.
• Applied on .NET Framework 2.0, 3.5, 3.5 Client Profile, 4.0, 4.0 Client Profile,4.5 and .NET Standard 2.0, .NET Core, .NET 5.0, .NET 9.0, .NET10.0, MonoAndroid and Xamarin.Ios.
• Support Windows Forms and ASP.NET Applications.
• Support 32-bit OS
• Support 64-bit OS
• Support PDF Version 1.2, 1.3, 1.4, 1.5, 1.6，1.7 and 2.0.
• PDF API reference in HTML.
• Be Independent and do not need Adobe Acrobat or other third party PDF libraries.

Convert PDF to DOC in C#

            //Create a PDF document and load sample PDF.
            PdfDocument doc = new PdfDocument();
            doc.LoadFromFile("test.pdf");

            //Use SaveToFile method and set conversion target parameter as FileFormat.DOC.
            doc.SaveToFile("PDFtoDoc.doc", FileFormat.DOC);

Convert PDF to images in C#

            //Create a PDF document and load sample PDF.
            PdfDocument doc = new PdfDocument();
            doc.LoadFromFile("sample.pdf");

            Image bmp = doc.SaveAsImage(0);
            Image emf = doc.SaveAsImage(0, Spire.Pdf.Graphics.PdfImageType.Metafile);
            Image zoomImg = new Bitmap((int)(emf.Size.Width * 2), (int)(emf.Size.Height * 2));
            using (Graphics g = Graphics.FromImage(zoomImg))
            {
                g.ScaleTransform(2.0f, 2.0f);
                g.DrawImage(emf, new Rectangle(new Point(0, 0), emf.Size), new Rectangle(new Point(0, 0), emf.Size), GraphicsUnit.Pixel);
            }
            //Save as BMP
            bmp.Save("convertToBmp.bmp", ImageFormat.Bmp);
            System.Diagnostics.Process.Start("convertToBmp.bmp");

            //Save as EMF
            emf.Save("convertToEmf.png", ImageFormat.Png);
            System.Diagnostics.Process.Start("convertToEmf.png");

            //SAVE as ZoomImg
            zoomImg.Save("convertToZoom.png", ImageFormat.Png);
            System.Diagnostics.Process.Start("convertToZoom.png");

Convert HTML to PDF in C#

            //Create a pdf document.
            PdfDocument doc = new PdfDocument();

            PdfPageSettings setting = new PdfPageSettings();

            setting.Size = new SizeF(1000,1000);
            setting.Margins = new Spire.Pdf.Graphics.PdfMargins(20);

            PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
            htmlLayoutFormat.IsWaiting = true;
            
            String url = "https://www.wikipedia.org/";
         
            Thread thread = new Thread(() =>
            { doc.LoadFromHTML(url, false, false, false, setting,htmlLayoutFormat); });
            thread.SetApartmentState(ApartmentState.STA);
            thread.Start();
            thread.Join();

            //Save pdf file.
            doc.SaveToFile("output-wiki.pdf");

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