Syncfusion PDF 查看器 HTML 转 PDF 比较

using IronPdf;

// Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = true;

// Instantiate Renderer
var renderer = new ChromePdfRenderer();

// Create a PDF from an HTML string using C#
var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");
pdf.SaveAs("output.pdf");

// Advanced Example with HTML Assets
// Load external HTML assets: images, CSS and JavaScript.
// An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\");
myAdvancedPdf.SaveAs("html-with-assets.pdf");

Imports IronPdf

' Disable local disk access or cross-origin requests
Installation.EnableWebSecurity = True

' Instantiate Renderer
Dim renderer = New ChromePdfRenderer()

' Create a PDF from an HTML string using C#
Dim pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>")
pdf.SaveAs("output.pdf")

' Advanced Example with HTML Assets
' Load external HTML assets: images, CSS and JavaScript.
' An optional BasePath 'C:\site\assets\' is set as the file location to load assets from
Dim myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", "C:\site\assets\")
myAdvancedPdf.SaveAs("html-with-assets.pdf")

using Syncfusion.Pdf;
using Syncfusion.HtmlConverter;

HtmlToPdfConverter htmlConverter = new HtmlToPdfConverter();
PdfDocument document = htmlConverter.Convert("http://www.syncfusion.com");
FileStream fileStream = new FileStream("HTML-to-PDF.pdf", FileMode.CreateNew, FileAccess.ReadWrite);
document.Save(fileStream);
document.Close(true);

Imports Syncfusion.Pdf
Imports Syncfusion.HtmlConverter

Private htmlConverter As New HtmlToPdfConverter()
Private document As PdfDocument = htmlConverter.Convert("http://www.syncfusion.com")
Private fileStream As New FileStream("HTML-to-PDF.pdf", FileMode.CreateNew, FileAccess.ReadWrite)
document.Save(fileStream)
document.Close(True)

using IronPdf;
using System;

// Open an Encrypted File, alternatively create a new PDF from Html
var pdf = PdfDocument.FromFile("encrypted.pdf", "password");

// Edit file metadata
pdf.MetaData.Author = "Satoshi Nakamoto";
pdf.MetaData.Keywords = "SEO, Friendly";
pdf.MetaData.ModifiedDate = DateTime.Now;

// Edit file security settings
// The following code makes a PDF read-only and will disallow copy & paste and printing
pdf.SecuritySettings.RemovePasswordsAndEncryption();
pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key");
pdf.SecuritySettings.AllowUserAnnotations = false;
pdf.SecuritySettings.AllowUserCopyPasteContent = false;
pdf.SecuritySettings.AllowUserFormData = false;
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights;

// change or set the document encryption password
pdf.Password = "my-password";
pdf.SaveAs("secured.pdf");

Imports IronPdf
Imports System

' Open an Encrypted File, alternatively create a new PDF from Html
Private pdf = PdfDocument.FromFile("encrypted.pdf", "password")

' Edit file metadata
pdf.MetaData.Author = "Satoshi Nakamoto"
pdf.MetaData.Keywords = "SEO, Friendly"
pdf.MetaData.ModifiedDate = DateTime.Now

' Edit file security settings
' The following code makes a PDF read-only and will disallow copy & paste and printing
pdf.SecuritySettings.RemovePasswordsAndEncryption()
pdf.SecuritySettings.MakePdfDocumentReadOnly("secret-key")
pdf.SecuritySettings.AllowUserAnnotations = False
pdf.SecuritySettings.AllowUserCopyPasteContent = False
pdf.SecuritySettings.AllowUserFormData = False
pdf.SecuritySettings.AllowUserPrinting = IronPdf.Security.PdfPrintSecurity.FullPrintRights

' change or set the document encryption password
pdf.Password = "my-password"
pdf.SaveAs("secured.pdf")

using Syncfusion.Pdf;

PdfLoadedDocument document = new PdfLoadedDocument("input.pdf");
PdfSecurity security = document.Security;
security.UserPassword = "syncfusion";
security.Algorithm = PdfEncryptionAlgorithm.AES;
security.KeySize = PdfEncryptionKeySize.Key256Bit;
security.Permissions = PdfPermissionsFlags.Print

document.Save("encrypted.pdf");
document.Close(true);

Imports Syncfusion.Pdf

Private document As New PdfLoadedDocument("input.pdf")
Private security As PdfSecurity = document.Security
security.UserPassword = "syncfusion"
security.Algorithm = PdfEncryptionAlgorithm.AES
security.KeySize = PdfEncryptionKeySize.Key256Bit
security.Permissions = PdfPermissionsFlags.Print document.Save("encrypted.pdf")
document.Close(True)

using IronPdf;

PdfDocument pdf = PdfDocument.FromFile("novel.pdf");

// Redact 'are' phrase from all pages
pdf.RedactTextOnAllPages("are");

pdf.SaveAs("redacted.pdf");

Imports IronPdf

Private pdf As PdfDocument = PdfDocument.FromFile("novel.pdf")

' Redact 'are' phrase from all pages
pdf.RedactTextOnAllPages("are")

pdf.SaveAs("redacted.pdf")

using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;

PdfLoadedDocument loadedDocument = new PdfLoadedDocument("input.pdf");
PdfRedaction textRedaction = new PdfRedaction(new RectangleF(10, 40, 30, 30), Color.Black);
loadedDocument.Pages[0].Redactions.Add(textRedaction);
loadedDocument.Save("redacted.pdf");
loadedDocument.Close(true);

Imports Syncfusion.Pdf
Imports Syncfusion.Pdf.Graphics

Private loadedDocument As New PdfLoadedDocument("input.pdf")
Private textRedaction As New PdfRedaction(New RectangleF(10, 40, 30, 30), Color.Black)
loadedDocument.Pages(0).Redactions.Add(textRedaction)
loadedDocument.Save("redacted.pdf")
loadedDocument.Close(True)

using IronPdf;
using IronPdf.Signing;
using System.Security.Cryptography.X509Certificates;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>foo</h1>");

// Create X509Certificate2 object with X509KeyStorageFlags set to Exportable
X509Certificate2 cert = new X509Certificate2("IronSoftware.pfx", "123456", X509KeyStorageFlags.Exportable);

// Create PdfSignature object
var sig = new PdfSignature(cert);

// Sign PDF document
pdf.Sign(sig);
pdf.SaveAs("signed.pdf");

Imports IronPdf
Imports IronPdf.Signing
Imports System.Security.Cryptography.X509Certificates

Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>foo</h1>")

' Create X509Certificate2 object with X509KeyStorageFlags set to Exportable
Private cert As New X509Certificate2("IronSoftware.pfx", "123456", X509KeyStorageFlags.Exportable)

' Create PdfSignature object
Private sig = New PdfSignature(cert)

' Sign PDF document
pdf.Sign(sig)
pdf.SaveAs("signed.pdf")

using Syncfusion.Pdf;
using System.Drawing;

PdfLoadedDocument loadedDocument = new PdfLoadedDocument("input.pdf");
PdfCertificate certificate = new PdfCertificate("Syncfusion.pfx", "password");
PdfSignature signature = new PdfSignature(loadedDocument, loadedDocument.Pages[0], certificate, "Signature");
signature.Bounds = new RectangleF(0, 0, 100, 50);
loadedDocument.Save("signed.pdf");
loadedDocument.Close(true);

Imports Syncfusion.Pdf
Imports System.Drawing

Private loadedDocument As New PdfLoadedDocument("input.pdf")
Private certificate As New PdfCertificate("Syncfusion.pfx", "password")
Private signature As New PdfSignature(loadedDocument, loadedDocument.Pages(0), certificate, "Signature")
signature.Bounds = New RectangleF(0, 0, 100, 50)
loadedDocument.Save("signed.pdf")
loadedDocument.Close(True)

using IronPdf;

// Stamps a Watermark onto a new or existing PDF
var renderer = new ChromePdfRenderer();

var pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf");
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center);
pdf.SaveAs(@"C:\Path\To\Watermarked.pdf");

Imports IronPdf

' Stamps a Watermark onto a new or existing PDF
Private renderer = New ChromePdfRenderer()

Private pdf = renderer.RenderUrlAsPdf("https://www.nuget.org/packages/IronPdf")
pdf.ApplyWatermark("<h2 style='color:red'>SAMPLE</h2>", 30, IronPdf.Editing.VerticalAlignment.Middle, IronPdf.Editing.HorizontalAlignment.Center)
pdf.SaveAs("C:\Path\To\Watermarked.pdf")

using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;
using System.Drawing;

PdfLoadedDocument loadedDocument = new PdfLoadedDocument("input.pdf");
//Add a page to the document pdfpage page
PdfPageBase page = loadedDocument.Pages[0];
PdfGraphics graphics = page.Graphics;
PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 20);
PdfGraphicsState state = graphics.Save();
graphics.SetTransparency(0.25f);
graphics.DrawString("Watermark", font, PdfPens.Blue, PdfBrushes.Blue, new PointF(100, 100));
graphics.Restore(state);
loadedDocument.Save("watermarked.pdf");
loadedDocument.Close(true);

Imports Syncfusion.Pdf
Imports Syncfusion.Pdf.Graphics
Imports System.Drawing

Private loadedDocument As New PdfLoadedDocument("input.pdf")
'Add a page to the document pdfpage page
Private page As PdfPageBase = loadedDocument.Pages(0)
Private graphics As PdfGraphics = page.Graphics
Private font As PdfFont = New PdfStandardFont(PdfFontFamily.Helvetica, 20)
Private state As PdfGraphicsState = graphics.Save()
graphics.SetTransparency(0.25F)
graphics.DrawString("Watermark", font, PdfPens.Blue, PdfBrushes.Blue, New PointF(100, 100))
graphics.Restore(state)
loadedDocument.Save("watermarked.pdf")
loadedDocument.Close(True)

using IronPdf;
using IronPdf.Editing;

ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create text stamper
TextStamper textStamper = new TextStamper()
{
    Text = "Text Stamper!",
    FontFamily = "Bungee Spice",
    UseGoogleFont = true,
    FontSize = 30,
    IsBold = true,
    IsItalic = true,
    VerticalAlignment = VerticalAlignment.Top,
};

// Stamp the text stamper
pdf.ApplyStamp(textStamper);
pdf.SaveAs("stampText.pdf");

Imports IronPdf
Imports IronPdf.Editing

Private renderer As New ChromePdfRenderer()

Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>")

' Create text stamper
Private textStamper As New TextStamper() With {
	.Text = "Text Stamper!",
	.FontFamily = "Bungee Spice",
	.UseGoogleFont = True,
	.FontSize = 30,
	.IsBold = True,
	.IsItalic = True,
	.VerticalAlignment = VerticalAlignment.Top
}

' Stamp the text stamper
pdf.ApplyStamp(textStamper)
pdf.SaveAs("stampText.pdf")

using IronPdf;
using IronPdf.Editing;
using System;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>");

// Create image stamper
ImageStamper imageStamper = new ImageStamper(new Uri("https://ironpdf.com/img/svgs/iron-pdf-logo.svg"))
{
    VerticalAlignment = VerticalAlignment.Top,
};

// Stamp the image stamper
pdf.ApplyStamp(imageStamper, 0);
pdf.SaveAs("stampImage.pdf");

Imports IronPdf
Imports IronPdf.Editing
Imports System

Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Example HTML Document!</h1>")

' Create image stamper
Private imageStamper As New ImageStamper(New Uri("https://ironpdf.com/img/svgs/iron-pdf-logo.svg")) With {.VerticalAlignment = VerticalAlignment.Top}

' Stamp the image stamper
pdf.ApplyStamp(imageStamper, 0)
pdf.SaveAs("stampImage.pdf")

using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;
using System.Drawing;

PdfLoadedDocument loadedDocument = new PdfLoadedDocument("input.pdf");
PdfPageBase page = loadedDocument.Pages[0];
PdfGraphics graphics = page.Graphics;
PdfFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 12);
graphics.DrawString("Hello, World!", font, PdfBrushes.Black, new PointF(10, 10));
loadedDocument.Save("stamped.pdf");
loadedDocument.Close(true);

Imports Syncfusion.Pdf
Imports Syncfusion.Pdf.Graphics
Imports System.Drawing

Private loadedDocument As New PdfLoadedDocument("input.pdf")
Private page As PdfPageBase = loadedDocument.Pages(0)
Private graphics As PdfGraphics = page.Graphics
Private font As PdfFont = New PdfStandardFont(PdfFontFamily.Helvetica, 12)
graphics.DrawString("Hello, World!", font, PdfBrushes.Black, New PointF(10, 10))
loadedDocument.Save("stamped.pdf")
loadedDocument.Close(True)

using IronPdf;

// Instantiate Renderer
DocxToPdfRenderer renderer = new DocxToPdfRenderer();

// Render from DOCX file
PdfDocument pdf = renderer.RenderDocxAsPdf("Modern-chronological-resume.docx");

// Save the PDF
pdf.SaveAs("pdfFromDocx.pdf");

Imports IronPdf

' Instantiate Renderer
Private renderer As New DocxToPdfRenderer()

' Render from DOCX file
Private pdf As PdfDocument = renderer.RenderDocxAsPdf("Modern-chronological-resume.docx")

' Save the PDF
pdf.SaveAs("pdfFromDocx.pdf")

using System.IO;
using Syncfusion.DocIO.DLS;
using Syncfusion.DocIORenderer;
using Syncfusion.OfficeChart;
using Syncfusion.Pdf;

WordDocument document = new WordDocument("sample.docx", FormatType.Docx);
DocToPDFConverter converter = new DocToPDFConverter();
document.ChartToImageConverter = new ChartToImageConverter();
PdfDocument pdf = converter.ConvertToPDF(document);
pdf.Save("output.pdf");
pdf.Close(true);
wordDocument.Close();

Imports System.IO
Imports Syncfusion.DocIO.DLS
Imports Syncfusion.DocIORenderer
Imports Syncfusion.OfficeChart
Imports Syncfusion.Pdf

Private document As New WordDocument("sample.docx", FormatType.Docx)
Private converter As New DocToPDFConverter()
document.ChartToImageConverter = New ChartToImageConverter()
Dim pdf As PdfDocument = converter.ConvertToPDF(document)
pdf.Save("output.pdf")
pdf.Close(True)
wordDocument.Close()