Kepiye carane ngoptimalake PDF?

Bukak situs: PDF . Seret lan selehake PDF file kanggo ngoptimalake lan kompres kanthi online. Utawa mung nganggo conto kode ing C#. Pasang Aspose.Words for .NET. Tambah referensi perpustakaan (ngimpor perpustakaan) menyang proyek C# sampeyan. Bukak PDF berkas sumber ing C#. Kompres PDF tanpa kelangan kualitas. Telpon metode Document.Cleanup(). Kode asil bisa beda-beda gumantung saka format file output. Entuk asil sing dikompres minangka PDF file.

Napa ngompres PDF file ing C#?

Ngompres PDF ngidini sampeyan nambah panggunaan spasi disk lan lalu lintas jaringan tanpa ngorbanake kualitas data.

Format file output apa sing bisa digunakake kanggo ngompres PDF file?

Kita ndhukung macem-macem format file output kanggo optimasi PDF, kalebu DOCX, DOC, RTF, ODT, EPUB, JPG, PNG, XLS, XLSX, WPS lan akeh liyane.

Apa ukuran maksimum PDF sing didhukung dening Aspose.Words for .NET?

Ora ana watesan ukuran kanggo ngompres PDF file nganggo Aspose.Words for .NET.

Kompres PDF Ing C#

Kompres PDF ing C#

Pustaka C# iki nyedhiyakake pangembang kanthi kemampuan kanggo ngompres PDF dokumen kanthi cepet lan efisien kanthi program. Gampang entuk output PDF sing dioptimalake siap kanggo dicithak, diarsipake utawa dienggo bareng liwat jaringan. Iki minangka solusi pangolahan PDF dokumen mandiri kanggo C# sing ora mbutuhake piranti lunak pihak katelu kanggo diinstal.

Ngurangi ukuran PDF nggunakake C#

Produk kita nyedhiyakake pangembang C# kanthi API terpadu kanggo nyuda ukuran PDF file. Kompresi PDF ditindakake kanthi rong pass. Sajrone pass pisanan, kabeh kaca PDF diowahi dadi format gambar. Produk kita nggunakake algoritma kompresi gambar sing adaptif lan efisien banget sing ngidini pangembang entuk output PDF sing kompak nalika njaga kualitas dokumen sing optimal. Ing pass sabanjure, urutan gambar dikompres lan digabungake kanggo mbentuk isi PDF file anyar sing dioptimalake.

Kompresi PDF digawe gampang karo 'Aspose.Words for .NET'. Conto ing ngisor iki nuduhake carane nyuda ukuran PDF file ing C#:

Conto kode ing C# kanggo ngompres PDF file

File input

Unggah file sing pengin dioptimalake / kompres

Kode roto

Format output

Pilih format target saka dhaptar

JpegQuality

50%

Wangun cache ^?

dotnet add package Aspose.Words

Nyalin

using Aspose.Words;
using Aspose.Words.Pdf2Word.FixedFormats;

using var pdfStream = File.OpenRead("Input.pdf");

var renderer = new PdfFixedRenderer();
var pdfReadOptions = new PdfFixedOptions
{
    ImageFormat = FixedImageFormat.Jpeg,
    JpegQuality = 50
};

const double maxPageDimension = 1584;
var pagesStream = renderer.SavePdfAsImages(pdfStream, pdfReadOptions);

var builder = new DocumentBuilder();
for (var i = 0; i < pagesStream.Count; ++i)
{
    // Setel ukuran kaca maksimal kanggo ngindhari skala gambar kaca saiki.
    var pageSetup = builder.PageSetup;
    SetPageSize(pageSetup, maxPageDimension, maxPageDimension);

    var pageImage = builder.InsertImage(pagesStream[i]);

    SetPageSize(pageSetup, pageImage.Width, pageImage.Height);
    pageSetup.TopMargin = 0;
    pageSetup.LeftMargin = 0;
    pageSetup.BottomMargin = 0;
    pageSetup.RightMargin = 0;

    if (i != pagesStream.Count - 1)
        builder.InsertBreak(BreakType.SectionBreakNewPage);
}

var saveOptions = new PdfSaveOptions
{
    CacheBackgroundGraphics = true
};

builder.Document.Save("Output.pdf", saveOptions);

private void SetPageSize(PageSetup pageSetup, double width, double height)
{
    pageSetup.PageWidth = width;
    pageSetup.PageHeight = height;
}

							using Aspose.Words;

var doc = new Document("Input.pdf");
doc.Cleanup();

var nodes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape shape in nodes)
{
    if (shape.IsImage)
    {
        // Iku nganti pangembang kanggo milih perpustakaan kanggo komprèsi gambar.
        using var image = Image.FromStream(shape.ImageData.ToStream());

        // ...
        // Compress gambar lan nyetel maneh menyang wangun.
        shape.ImageData.SetImage("yourCompressedImage");
    }
}

var saveOptions = new PdfSaveOptions
{
    CacheBackgroundGraphics = true
};

doc.Save("Output.pdf", saveOptions);
 
							using Aspose.Words;

var doc = new Document("Input.pdf");
doc.Cleanup();

var nodes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape shape in nodes)
{
    if (shape.IsImage)
    {
        // Iku nganti pangembang kanggo milih perpustakaan kanggo komprèsi gambar.
        using var image = Image.Fromstream(shape.ImageData.ToStream());

        // ...
        // Compress gambar lan nyetel maneh menyang wangun.
        shape.ImageData.SetImage("yourCompressedImage");
    }
}

doc.Save("Output.pdf");
 
							using Aspose.Words;

var doc = new Document("Input.pdf");
doc.Cleanup();

var nodes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape shape in nodes)
{
    if (shape.IsImage)
    {
        //  Iku nganti pangembang kanggo milih perpustakaan kanggo komprèsi gambar.
        using var image = Image.FromStream(shape.ImageData.ToStream());

        // ...
        //  Compress gambar lan nyetel maneh menyang wangun.
        shape.ImageData.SetImage("yourCompressedImage");
    }
}

var saveOptions = new OoxmlSaveOptions
{
  CompressionLevel = CompressionLevel.Maximum
};

doc.Save("Output.pdf", saveOptions);
 
							using Aspose.Words;

var doc = new Document();
var builder = new DocumentBuilder(doc);

var shape = builder.InsertImage("Input.pdf");

var saveOptions = new ImageSaveOptions(SaveFormat.Pdf)
{

};

shape.GetShapeRenderer().Save("Output.pdf", saveOptions);
 
							using Aspose.Words;
using Aspose.Words.Pdf2Word.FixedFormats;

using var pdfStream = File.OpenRead("Input.pdf");

var renderer = new PdfFixedRenderer();
var pdfReadOptions = new PdfFixedOptions
{
    ImageFormat = FixedImageFormat.Jpeg,
    JpegQuality = 50
};

const double maxPageDimension = 1584;
var pagesStream = renderer.SavePdfAsImages(pdfStream, pdfReadOptions);

var builder = new DocumentBuilder();
for (var i = 0; i < pagesStream.Count; ++i)
{
    // Setel ukuran kaca maksimal kanggo ngindhari skala gambar kaca saiki.
    var pageSetup = builder.PageSetup;
    SetPageSize(pageSetup, maxPageDimension, maxPageDimension);

    var pageImage = builder.InsertImage(pagesStream[i]);

    SetPageSize(pageSetup, pageImage.Width, pageImage.Height);
    pageSetup.TopMargin = 0;
    pageSetup.LeftMargin = 0;
    pageSetup.BottomMargin = 0;
    pageSetup.RightMargin = 0;

    if (i != pagesStream.Count - 1)
        builder.InsertBreak(BreakType.SectionBreakNewPage);
}

var saveOptions = new PdfSaveOptions
{
    CacheBackgroundGraphics = true
};

builder.Document.Save("Output.pdf", saveOptions);

private void SetPageSize(PageSetup pageSetup, double width, double height)
{
    pageSetup.PageWidth = width;
    pageSetup.PageHeight = height;
}
 
			

					Kode roto
				

Sampeyan bisa bebas nyalin kode iki lan nggunakake ing sembarang tujuan sing ditrapake

Carane ngompres PDF

Pasang Aspose.Words for .NET.
Tambah referensi perpustakaan (ngimpor perpustakaan) menyang proyek C# sampeyan.
Bukak PDF berkas sumber ing C#.
Kompres PDF tanpa kelangan kualitas.
Telpon metode Document.Cleanup(). Kode asil bisa beda-beda gumantung saka format file output.
Entuk asil sing dikompres minangka PDF file.

Pustaka C# kanggo ngoptimalake lan ngompres PDF file

Ana telung pilihan alternatif kanggo nginstal "Aspose.Words kanggo .NET" sistem sampeyan. Pilih salah siji sing cocog karo kabutuhan sampeyan lan tindakake pandhuan langkah demi langkah:

Instal Paket NuGet. Waca Dokumentasi
Instal perpustakaan nggunakake Package Manager Console ing Visual Studio IDE
Instal perpustakaan kanthi manual nggunakake Windows Installer

Syarat Sistem

Produk kita kanthi lintas-platform lan ndhukung kabeh implementasi .NET utama:

.NET ≥ 5.0
.NET Core ≥ 2.0
.NET Standard ≥ 2.0
.NET Framework ≥ 3.5
MonoMac
MonoAndroid
Xamarin

Nganti kode .NET ora gumantung ing hardware utawa sistem operasi sing ndasari, nanging mung ing Mesin Virtual, sampeyan bebas ngembangake piranti lunak apa wae kanggo Windows, macOS, Android, iOS lan Linux. Priksa manawa sampeyan wis nginstal versi .NET Framework, .NET Core, Windows Azure, Mono utawa Xamarin sing cocog.

Disaranake nggunakake Microsoft Visual Studio, Xamarin, lan lingkungan pangembangan terintegrasi MonoDevelop kanggo nggawe aplikasi C#, F#, VB.NET.

Kanggo rincian liyane, waca Dokumentasi Produk.

Sampeyan bisa ngoptimalake file ing akeh format file liyane: