VectSharp 与 IronPDF：技术比较指南

ImGearEvaluationManager.Initialize();
ImGearCommonFormats.Initialize();
using (FileStream fs = new FileStream("scan.tif", FileMode.Open))
{
    ImGearPage page = ImGearFileFormats.LoadPage(fs, 0);
    ImGearProcessing.Despeckle(page, ImGearDespeckleType.SmallNoise);
    ImGearProcessing.AutoOrient(page);
    using (FileStream outFs = new FileStream("scan-clean.jpg", FileMode.Create))
        ImGearFileFormats.SavePage(page, outFs, 0, ImGearSavingModes.OVERWRITE,
            ImGearSavingFormats.JPG, null);
}

Imports System.IO

ImGearEvaluationManager.Initialize()
ImGearCommonFormats.Initialize()
Using fs As New FileStream("scan.tif", FileMode.Open)
    Dim page As ImGearPage = ImGearFileFormats.LoadPage(fs, 0)
    ImGearProcessing.Despeckle(page, ImGearDespeckleType.SmallNoise)
    ImGearProcessing.AutoOrient(page)
    Using outFs As New FileStream("scan-clean.jpg", FileMode.Create)
        ImGearFileFormats.SavePage(page, outFs, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.JPG, Nothing)
    End Using
End Using

ImGearFileFormats.Filters.Add(ImGearPDF.CreatePDFFormat());
ImGearPDF.Initialize();
using (FileStream pdfStream = new FileStream("input.pdf", FileMode.Open))
{
    ImGearPDFDocument pdfDoc = (ImGearPDFDocument)ImGearFileFormats.LoadDocument(pdfStream);
    for (int i = 0; i < pdfDoc.Pages.Count; i++)
    {
        ImGearPage page = pdfDoc.Pages[i];
        using (FileStream outFs = new FileStream($"page_{i + 1}.png", FileMode.Create))
            ImGearFileFormats.SavePage(page, outFs, 0, ImGearSavingModes.OVERWRITE,
                ImGearSavingFormats.PNG, null);
    }
}
ImGearPDF.Terminate();

Imports System.IO

ImGearFileFormats.Filters.Add(ImGearPDF.CreatePDFFormat())
ImGearPDF.Initialize()

Using pdfStream As New FileStream("input.pdf", FileMode.Open)
    Dim pdfDoc As ImGearPDFDocument = CType(ImGearFileFormats.LoadDocument(pdfStream), ImGearPDFDocument)
    For i As Integer = 0 To pdfDoc.Pages.Count - 1
        Dim page As ImGearPage = pdfDoc.Pages(i)
        Using outFs As New FileStream($"page_{i + 1}.png", FileMode.Create)
            ImGearFileFormats.SavePage(page, outFs, 0, ImGearSavingModes.OVERWRITE, ImGearSavingFormats.PNG, Nothing)
        End Using
    Next
End Using

ImGearPDF.Terminate()

var renderer = new ChromePdfRenderer();
string html = @"<h1>Invoice 2026-0428</h1><p>Customer: Acme Corp</p><p>Total due: $1,240.00</p>";
using var pdf = renderer.RenderHtmlAsPdf(html);
pdf.SaveAs("invoice.pdf");

Dim renderer As New ChromePdfRenderer()
Dim html As String = "<h1>Invoice 2026-0428</h1><p>Customer: Acme Corp</p><p>Total due: $1,240.00</p>"
Using pdf = renderer.RenderHtmlAsPdf(html)
    pdf.SaveAs("invoice.pdf")
End Using

ImGearFileFormats.Filters.Add(ImGearPDF.CreatePDFFormat());
ImGearPDF.Initialize();
using (ImGearRecognition recog = new ImGearRecognition())
{
    recog.Languages.EnableLanguages(ImGearRecLanguages.English);
    using (FileStream input = new FileStream("scan.tif", FileMode.Open))
    {
        ImGearRecPage page = recog.ImportPage(input, 0);
        page.Recognize();
        using (FileStream output = new FileStream("searchable.pdf", FileMode.Create))
            page.Output.PageToPDF(output, ImGearPDFOutputType.SearchablePDF);
    }
}
ImGearPDF.Terminate();

Imports System.IO

ImGearFileFormats.Filters.Add(ImGearPDF.CreatePDFFormat())
ImGearPDF.Initialize()
Using recog As New ImGearRecognition()
    recog.Languages.EnableLanguages(ImGearRecLanguages.English)
    Using input As New FileStream("scan.tif", FileMode.Open)
        Dim page As ImGearRecPage = recog.ImportPage(input, 0)
        page.Recognize()
        Using output As New FileStream("searchable.pdf", FileMode.Create)
            page.Output.PageToPDF(output, ImGearPDFOutputType.SearchablePDF)
        End Using
    End Using
End Using
ImGearPDF.Terminate()

var ocr = new IronTesseract();
using var input = new OcrInput("scanned-document.png");
input.Deskew();
input.DeNoise();
var result = ocr.Read(input);
Console.WriteLine($"Confidence: {result.Confidence}");

Imports IronTesseract

Dim ocr As New IronTesseract()
Using input As New OcrInput("scanned-document.png")
    input.Deskew()
    input.DeNoise()
    Dim result = ocr.Read(input)
    Console.WriteLine($"Confidence: {result.Confidence}")
End Using

var client = new PrizmDocServerClient(
    baseUrl: "https://prizmdoc.example.local",
    apiKey: "YOUR_PRIZMDOC_API_KEY");
ViewingSession session = await client.CreateViewingSessionAsync(
    new CreateViewingSessionOptions { Source = new FileSource("contract.pdf") });
Console.WriteLine($"Viewer URL: https://prizmdoc.example.local/viewer.html?viewingSessionId={session.ViewingSessionId}");

Imports System

Dim client = New PrizmDocServerClient(
    baseUrl: "https://prizmdoc.example.local",
    apiKey: "YOUR_PRIZMDOC_API_KEY")

Dim session As ViewingSession = Await client.CreateViewingSessionAsync(
    New CreateViewingSessionOptions With {.Source = New FileSource("contract.pdf")})

Console.WriteLine($"Viewer URL: https://prizmdoc.example.local/viewer.html?viewingSessionId={session.ViewingSessionId}")

PrizmDocServerClient prizm = new PrizmDocServerClient(
    "https://prizmdoc.example.local", "YOUR_PRIZMDOC_API_KEY");
ConversionResult[] results = await prizm.ConvertAsync(
    input: "contract.docx",
    destinationOptions: new DestinationOptions(DestinationFileFormat.Pdf));
foreach (ConversionResult r in results)
    await r.RemoteWorkFile.SaveAsync($"converted_{r.PageCount}p.pdf");

Imports System.Threading.Tasks

Dim prizm As New PrizmDocServerClient("https://prizmdoc.example.local", "YOUR_PRIZMDOC_API_KEY")
Dim results As ConversionResult() = Await prizm.ConvertAsync(input:="contract.docx", destinationOptions:=New DestinationOptions(DestinationFileFormat.Pdf))
For Each r As ConversionResult In results
    Await r.RemoteWorkFile.SaveAsync($"converted_{r.PageCount}p.pdf")
Next