Przewodnik 2025: Najlepsze biblioteki PDF dla C# (najpierw darmowe, płatne w razie potrzeby)

using IronPdf;
var renderer = new ChromePdfRenderer();

// 1. HTML String to PDF
var pdf1 = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>");
pdf1.SaveAs("html-string.pdf");

// 2. HTML String with Assets (Images, CSS, JS)
var pdf2 = renderer.RenderHtmlAsPdf(
    "<img src='logo.png'><link rel='stylesheet' href='style.css'>",
    @"C:\assets\"
);
pdf2.SaveAs("html-with-assets.pdf");

// 3. HTML File to PDF
var pdf3 = renderer.RenderHtmlFileAsPdf("example.html");
pdf3.SaveAs("html-file.pdf");

// 4. URL to PDF
var pdf4 = renderer.RenderUrlAsPdf("https://ironpdf.com");
pdf4.SaveAs("url.pdf");

Imports IronPdf

Dim renderer As New ChromePdfRenderer()

' 1. HTML String to PDF
Dim pdf1 = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>")
pdf1.SaveAs("html-string.pdf")

' 2. HTML String with Assets (Images, CSS, JS)
Dim pdf2 = renderer.RenderHtmlAsPdf("<img src='logo.png'><link rel='stylesheet' href='style.css'>", "C:\assets\")
pdf2.SaveAs("html-with-assets.pdf")

' 3. HTML File to PDF
Dim pdf3 = renderer.RenderHtmlFileAsPdf("example.html")
pdf3.SaveAs("html-file.pdf")

' 4. URL to PDF
Dim pdf4 = renderer.RenderUrlAsPdf("https://ironpdf.com")
pdf4.SaveAs("url.pdf")

using IronPdf;
using IronSoftware.Drawing;
using System.Collections.Generic;

// Load PDF document
var pdf = PdfDocument.FromFile("sample.pdf");

// 1. Extract All Text
string allText = pdf.ExtractAllText();

// 2. Extract Text from Specific Page
string pageText = pdf.ExtractTextFromPage(0); 

// 3. Extract Text from Multiple Pages
for (int i = 0; i < pdf.PageCount; i++)
{
    string text = pdf.ExtractTextFromPage(i);
    Console.WriteLine($"Page {i + 1}: {text}");
}

// 4. Extract All Images
var allImages = pdf.ExtractAllImages();
foreach (var image in allImages)
{
    image.SaveAs($"image_{allImages.IndexOf(image)}.png");
}

// 5. Extract Images from Specific Page
List<AnyBitmap> pageImages = pdf.ExtractBitmapsFromPage(0);

// 6. Extract Raw Images (as byte arrays)
var rawImages = pdf.ExtractAllRawImages();
for (int i = 0; i < rawImages.Count; i++)
{
    System.IO.File.WriteAllBytes($"raw_image_{i}.png", rawImages[i]);
}

// 7. Extract Both Text & Images from Each Page
for (int i = 0; i < pdf.PageCount; i++)
{
    string text = pdf.ExtractTextFromPage(i);
    List<AnyBitmap> images = pdf.ExtractBitmapsFromPage(i);

    Console.WriteLine($"Page {i + 1}: {text}");
    Console.WriteLine($"Found {images.Count} images");
}

Imports IronPdf
Imports IronSoftware.Drawing
Imports System.Collections.Generic
Imports System.IO

' Load PDF document
Dim pdf = PdfDocument.FromFile("sample.pdf")

' 1. Extract All Text
Dim allText As String = pdf.ExtractAllText()

' 2. Extract Text from Specific Page
Dim pageText As String = pdf.ExtractTextFromPage(0)

' 3. Extract Text from Multiple Pages
For i As Integer = 0 To pdf.PageCount - 1
    Dim text As String = pdf.ExtractTextFromPage(i)
    Console.WriteLine($"Page {i + 1}: {text}")
Next

' 4. Extract All Images
Dim allImages = pdf.ExtractAllImages()
For Each image In allImages
    image.SaveAs($"image_{allImages.IndexOf(image)}.png")
Next

' 5. Extract Images from Specific Page
Dim pageImages As List(Of AnyBitmap) = pdf.ExtractBitmapsFromPage(0)

' 6. Extract Raw Images (as byte arrays)
Dim rawImages = pdf.ExtractAllRawImages()
For i As Integer = 0 To rawImages.Count - 1
    File.WriteAllBytes($"raw_image_{i}.png", rawImages(i))
Next

' 7. Extract Both Text & Images from Each Page
For i As Integer = 0 To pdf.PageCount - 1
    Dim text As String = pdf.ExtractTextFromPage(i)
    Dim images As List(Of AnyBitmap) = pdf.ExtractBitmapsFromPage(i)

    Console.WriteLine($"Page {i + 1}: {text}")
    Console.WriteLine($"Found {images.Count} images")
Next

using IronPdf;
using System;
var renderer = new ChromePdfRenderer();

// 1. Add Footer with Page Numbers
renderer.RenderingOptions.HtmlFooter = new HtmlHeaderFooter()
{
    HtmlFragment = "<center><i>{page} of {total-pages}</i></center>",
    MaxHeight = 15, // mm
    DrawDividerLine = true
};
renderer.RenderingOptions.MarginBottom = 25;

// 2. Add Header with Logo
renderer.RenderingOptions.HtmlHeader = new HtmlHeaderFooter()
{
    HtmlFragment = "<img src='logo.png'>",
    MaxHeight = 20, // mm
    BaseUrl = new Uri(@"C:\assets\images\").AbsoluteUri
};
renderer.RenderingOptions.MarginTop = 25;

// 3. Render HTML to PDF
var pdf = renderer.RenderHtmlAsPdf("<h1>Document Title</h1><p>Content...</p>");
pdf.SaveAs("output.pdf");

Imports IronPdf
Imports System

Dim renderer As New ChromePdfRenderer()

' 1. Add Footer with Page Numbers
renderer.RenderingOptions.HtmlFooter = New HtmlHeaderFooter() With {
    .HtmlFragment = "<center><i>{page} of {total-pages}</i></center>",
    .MaxHeight = 15, ' mm
    .DrawDividerLine = True
}
renderer.RenderingOptions.MarginBottom = 25

' 2. Add Header with Logo
renderer.RenderingOptions.HtmlHeader = New HtmlHeaderFooter() With {
    .HtmlFragment = "<img src='logo.png'>",
    .MaxHeight = 20, ' mm
    .BaseUrl = New Uri("C:\assets\images\").AbsoluteUri
}
renderer.RenderingOptions.MarginTop = 25

' 3. Render HTML to PDF
Dim pdf = renderer.RenderHtmlAsPdf("<h1>Document Title</h1><p>Content...</p>")
pdf.SaveAs("output.pdf")

using IronPdf;

// Load existing PDF with form fields
var pdf = PdfDocument.FromFile("EditableForm.pdf");

// Fill text fields
pdf.Form.FindFormField("firstname").Value = "John";
pdf.Form.FindFormField("lastname").Value = "Smith";
pdf.Form.FindFormField("email").Value = "john.smith@example.com";

// Fill radio button
pdf.Form.FindFormField("gender").Value = "Male";

// Fill dropdown/combobox
pdf.Form.FindFormField("country").Value = "USA";

// Fill checkbox ("Yes" to check, "No" to uncheck)
pdf.Form.FindFormField("subscribe").Value = "Yes";

// Fill textarea (use \r\n for line breaks)
pdf.Form.FindFormField("comments").Value = "This is a comment.\r\nSecond line here.";

// Save filled form
pdf.SaveAs("FilledForm.pdf");

Imports IronPdf

' Load existing PDF with form fields
Dim pdf = PdfDocument.FromFile("EditableForm.pdf")

' Fill text fields
pdf.Form.FindFormField("firstname").Value = "John"
pdf.Form.FindFormField("lastname").Value = "Smith"
pdf.Form.FindFormField("email").Value = "john.smith@example.com"

' Fill radio button
pdf.Form.FindFormField("gender").Value = "Male"

' Fill dropdown/combobox
pdf.Form.FindFormField("country").Value = "USA"

' Fill checkbox ("Yes" to check, "No" to uncheck)
pdf.Form.FindFormField("subscribe").Value = "Yes"

' Fill textarea (use vbCrLf for line breaks)
pdf.Form.FindFormField("comments").Value = "This is a comment." & vbCrLf & "Second line here."

' Save filled form
pdf.SaveAs("FilledForm.pdf")

using Aspose.Pdf;
using Aspose.Pdf.Text;

using (var document = new Document())
{
    // Add page objects
    var page = document.Pages.Add();

    // Add image - requires Rectangle positioning (You can add tiff images as well)
    page.AddImage("logo.png", new Rectangle(20, 730, 120, 830));

    // Add text - requires manual positioning
    var header = new TextFragment("Company Report");
    header.TextState.Font = FontRepository.FindFont("Arial");
    header.TextState.FontSize = 24;
    header.HorizontalAlignment = HorizontalAlignment.Center;
    header.Position = new Position(130, 720);
    page.Paragraphs.Add(header);

    // Add table - extensive configuration required
    var table = new Table
    {
        ColumnWidths = "100 100 100",
        Border = new BorderInfo(BorderSide.Box, 1f, Color.Black),
        DefaultCellBorder = new BorderInfo(BorderSide.Box, 0.5f, Color.Gray),
        DefaultCellPadding = new MarginInfo(4.5, 4.5, 4.5, 4.5)
    };

    // Add header row
    var headerRow = table.Rows.Add();
    headerRow.Cells.Add("Name");
    headerRow.Cells.Add("Age");
    headerRow.Cells.Add("City");

    // Style each header cell individually
    foreach (Cell cell in headerRow.Cells)
    {
        cell.BackgroundColor = Color.LightGray;
        cell.DefaultCellTextState.FontSize = 12;
    }

    // Add data row
    var dataRow = table.Rows.Add();
    dataRow.Cells.Add("John Doe");
    dataRow.Cells.Add("30");
    dataRow.Cells.Add("New York");

    page.Paragraphs.Add(table);

    // Save document
    document.Save("Report.pdf");
}

Imports Aspose.Pdf
Imports Aspose.Pdf.Text

Using document As New Document()
    ' Add page objects
    Dim page = document.Pages.Add()

    ' Add image - requires Rectangle positioning (You can add tiff images as well)
    page.AddImage("logo.png", New Rectangle(20, 730, 120, 830))

    ' Add text - requires manual positioning
    Dim header = New TextFragment("Company Report")
    header.TextState.Font = FontRepository.FindFont("Arial")
    header.TextState.FontSize = 24
    header.HorizontalAlignment = HorizontalAlignment.Center
    header.Position = New Position(130, 720)
    page.Paragraphs.Add(header)

    ' Add table - extensive configuration required
    Dim table = New Table With {
        .ColumnWidths = "100 100 100",
        .Border = New BorderInfo(BorderSide.Box, 1.0F, Color.Black),
        .DefaultCellBorder = New BorderInfo(BorderSide.Box, 0.5F, Color.Gray),
        .DefaultCellPadding = New MarginInfo(4.5, 4.5, 4.5, 4.5)
    }

    ' Add header row
    Dim headerRow = table.Rows.Add()
    headerRow.Cells.Add("Name")
    headerRow.Cells.Add("Age")
    headerRow.Cells.Add("City")

    ' Style each header cell individually
    For Each cell As Cell In headerRow.Cells
        cell.BackgroundColor = Color.LightGray
        cell.DefaultCellTextState.FontSize = 12
    Next

    ' Add data row
    Dim dataRow = table.Rows.Add()
    dataRow.Cells.Add("John Doe")
    dataRow.Cells.Add("30")
    dataRow.Cells.Add("New York")

    page.Paragraphs.Add(table)

    ' Save document
    document.Save("Report.pdf")
End Using

using iText.Kernel.Colors;
using iText.Kernel.Pdf;
using iText.Layout;
using iText.Layout.Element;
using iText.Layout.Properties;

public void CreateStyledTable(string dest)
{
    using var writer = new PdfWriter(dest);
    using var pdf = new PdfDocument(writer);
    var document = new Document(pdf);

    // Create a 2-column table
    Table table = new Table(2, false);

    // Header cells with gray background
    Cell cell11 = new Cell(1, 1)
        .SetBackgroundColor(ColorConstants.GRAY)
        .SetTextAlignment(TextAlignment.CENTER)
        .Add(new Paragraph("State"));

    Cell cell12 = new Cell(1, 1)
        .SetBackgroundColor(ColorConstants.GRAY)
        .SetTextAlignment(TextAlignment.CENTER)
        .Add(new Paragraph("Capital"));

    // Data cells
    Cell cell21 = new Cell(1, 1)
        .SetTextAlignment(TextAlignment.CENTER)
        .Add(new Paragraph("New York"));

    Cell cell22 = new Cell(1, 1)
        .SetTextAlignment(TextAlignment.CENTER)
        .Add(new Paragraph("Albany"));

    Cell cell31 = new Cell(1, 1)
        .SetTextAlignment(TextAlignment.CENTER)
        .Add(new Paragraph("New Jersey"));

    Cell cell32 = new Cell(1, 1)
        .SetTextAlignment(TextAlignment.CENTER)
        .Add(new Paragraph("Trenton"));

    // Add all cells to table
    table.AddCell(cell11);
    table.AddCell(cell12);
    table.AddCell(cell21);
    table.AddCell(cell22);
    table.AddCell(cell31);
    table.AddCell(cell32);

    document.Add(table);
    document.Close();
}

Imports iText.Kernel.Colors
Imports iText.Kernel.Pdf
Imports iText.Layout
Imports iText.Layout.Element
Imports iText.Layout.Properties

Public Sub CreateStyledTable(dest As String)
    Using writer As New PdfWriter(dest)
        Using pdf As New PdfDocument(writer)
            Dim document As New Document(pdf)

            ' Create a 2-column table
            Dim table As New Table(2, False)

            ' Header cells with gray background
            Dim cell11 As New Cell(1, 1)
            cell11.SetBackgroundColor(ColorConstants.GRAY) _
                  .SetTextAlignment(TextAlignment.CENTER) _
                  .Add(New Paragraph("State"))

            Dim cell12 As New Cell(1, 1)
            cell12.SetBackgroundColor(ColorConstants.GRAY) _
                  .SetTextAlignment(TextAlignment.CENTER) _
                  .Add(New Paragraph("Capital"))

            ' Data cells
            Dim cell21 As New Cell(1, 1)
            cell21.SetTextAlignment(TextAlignment.CENTER) _
                  .Add(New Paragraph("New York"))

            Dim cell22 As New Cell(1, 1)
            cell22.SetTextAlignment(TextAlignment.CENTER) _
                  .Add(New Paragraph("Albany"))

            Dim cell31 As New Cell(1, 1)
            cell31.SetTextAlignment(TextAlignment.CENTER) _
                  .Add(New Paragraph("New Jersey"))

            Dim cell32 As New Cell(1, 1)
            cell32.SetTextAlignment(TextAlignment.CENTER) _
                  .Add(New Paragraph("Trenton"))

            ' Add all cells to table
            table.AddCell(cell11)
            table.AddCell(cell12)
            table.AddCell(cell21)
            table.AddCell(cell22)
            table.AddCell(cell31)
            table.AddCell(cell32)

            document.Add(table)
            document.Close()
        End Using
    End Using
End Sub

using PdfSharp.Pdf;
using PdfSharp.Drawing;

// Create document
PdfDocument document = new PdfDocument();
PdfPage page = document.AddPage();
XGraphics gfx = XGraphics.FromPdfPage(page);

// Example of different font styles
XFont regularFont = new XFont("Arial", 12, XFontStyleEx.Regular);
XFont boldFont = new XFont("Arial", 12, XFontStyleEx.Bold);
XFont italicFont = new XFont("Arial", 12, XFontStyleEx.Italic);
XFont boldItalicFont = new XFont("Arial", 12, XFontStyleEx.BoldItalic);

// Position for the first text
double y = 50;
double x = 50;
double lineHeight = 20;

// Draw text in different styles - REQUIRES manual positioning
gfx.DrawString("Regular text in Arial", regularFont, XBrushes.Black, x, y);
y += lineHeight;
gfx.DrawString("Bold text in Arial", boldFont, XBrushes.Black, x, y);
y += lineHeight;
gfx.DrawString("Italic text in Arial", italicFont, XBrushes.Black, x, y);
y += lineHeight;
gfx.DrawString("Bold and Italic text in Arial", boldItalicFont, XBrushes.Black, x, y);

// Save document
document.Save("FormattedText.pdf");

Imports PdfSharp.Pdf
Imports PdfSharp.Drawing

' Create document
Dim document As New PdfDocument()
Dim page As PdfPage = document.AddPage()
Dim gfx As XGraphics = XGraphics.FromPdfPage(page)

' Example of different font styles
Dim regularFont As New XFont("Arial", 12, XFontStyleEx.Regular)
Dim boldFont As New XFont("Arial", 12, XFontStyleEx.Bold)
Dim italicFont As New XFont("Arial", 12, XFontStyleEx.Italic)
Dim boldItalicFont As New XFont("Arial", 12, XFontStyleEx.BoldItalic)

' Position for the first text
Dim y As Double = 50
Dim x As Double = 50
Dim lineHeight As Double = 20

' Draw text in different styles - REQUIRES manual positioning
gfx.DrawString("Regular text in Arial", regularFont, XBrushes.Black, x, y)
y += lineHeight
gfx.DrawString("Bold text in Arial", boldFont, XBrushes.Black, x, y)
y += lineHeight
gfx.DrawString("Italic text in Arial", italicFont, XBrushes.Black, x, y)
y += lineHeight
gfx.DrawString("Bold and Italic text in Arial", boldItalicFont, XBrushes.Black, x, y)

' Save document
document.Save("FormattedText.pdf")

using System;
using System.Collections.Generic;
using System.Linq;
using UglyToad.PdfPig;
using UglyToad.PdfPig.Content;

public static class Program
{
    public static void Main()
    {
        using (PdfDocument document = PdfDocument.Open(@"C:\path\to\file.pdf"))
        {
            foreach (Page page in document.GetPages())
            {
                // Extract all letters
                IReadOnlyList<Letter> letters = page.Letters;
                string text = string.Join(string.Empty, letters.Select(x => x.Value));

                // Extract words
                IEnumerable<Word> words = page.GetWords();

                // Extract images
                IEnumerable<IPdfImage> images = page.GetImages();
            }
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports UglyToad.PdfPig
Imports UglyToad.PdfPig.Content

Public Module Program
    Public Sub Main()
        Using document As PdfDocument = PdfDocument.Open("C:\path\to\file.pdf")
            For Each page As Page In document.GetPages()
                ' Extract all letters
                Dim letters As IReadOnlyList(Of Letter) = page.Letters
                Dim text As String = String.Join(String.Empty, letters.Select(Function(x) x.Value))

                ' Extract words
                Dim words As IEnumerable(Of Word) = page.GetWords()

                ' Extract images
                Dim images As IEnumerable(Of IPdfImage) = page.GetImages()
            Next
        End Using
    End Sub
End Module