Accusoft.PdfXpress7.Net
Convert PDF to Image
| PDF Xpress for .NET - User Guide > How To > Convert PDF to Image |
To create an image-only PDF document:
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PDF Xpress™ does not offer viewing capabilities of images. ImagXpress® can be used in conjunction with PDF Xpress to provide image decompression, viewing, and format conversion. |
To render a page of a PDF document to bitmap, dib, encapsulated postscript, or data, use the "RenderPage" methods (e.g., RenderPageToDib, RenderPageToEps, RenderPageToImageData, RenderPageToBitmap).
| C# Example |
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// This code demonstrates converting a single page PDF file to an image file
Accusoft.PdfXpressSdk.PdfXpress pdfXpress1 = null;
RenderOptions renderOpts = null;
try
{
pdfXpress1 = new PdfXpress();
pdfXpress1.Initialize();
renderOpts = new RenderOptions();
int index = pdfXpress1.Documents.Add("C:\\test.pdf");
renderOpts.ProduceDibSection = false;
int pageIndex = 0;
imageXView.Image = ImageX.FromBitmap(imagXpress, pdfXpress1.Documents[index].RenderPageToBitmap(pageIndex, renderOpts));
}
catch (System.Exception)
{
}
finally
{
if (null != pdfXpress1)
{
pdfXpress1.Dispose();
}
}
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| C# Example |
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// This code demonstrates rendering a PDF page to a bitmap
public void RenderPageToCompatibleBitmap(Document document, Int32 pageIndex, SizeF resolutionInDpi, RectangleF selectionInInches)
{
Bitmap bitmap = null;
try
{
// Create a render options object.
RenderOptions options = new RenderOptions();
options.ReduceToBitonal = false;
options.ResolutionX = (double)resolutionInDpi.Width;
options.ResolutionY = (double)resolutionInDpi.Height;
// Express the selection area as userspace units
const double UserspaceDpi = 72.0;
options.SelectionX = UserspaceDpi * selectionInInches.Left;
options.SelectionY = UserspaceDpi * selectionInInches.Bottom;
options.SelectionWidth = UserspaceDpi * selectionInInches.Width;
options.SelectionHeight = UserspaceDpi * selectionInInches.Height;
// Render the selection area to a System.Drawing.Bitmap object instance
bitmap = document.RenderPageToBitmap(pageIndex, options);
}
catch (PdfXpressLicensingException)
{
// PDF Xpress is not licensed for this feature
}
catch (PdfXpressLibraryException)
{
// A problem was encountered
}
catch (PdfXpressException)
{
// A problem was encountered
}
finally
{
if (null != bitmap)
{
bitmap.Dispose();// release Bitmap resources
}
}
}
public void RenderPageToCompatibleBitmap(Document document, Int32 pageIndex, SizeF resolutionInDpi)
{
// To render the entire page, choose a selection area where
// all dimensions are zero
RectangleF selectionInInches = new RectangleF(0.0f, 0.0f, 0.0f, 0.0f);
this.RenderPageToCompatibleBitmap(document, pageIndex, resolutionInDpi, selectionInInches);
}
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| C# Example |
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// This code demonstrates rendering a PDF page to a DIBSection
public void RenderPageToDibSection(Document document, Int32 pageIndex, SizeF resolutionInDpi, RectangleF selectionInInches)
{
IntPtr dibHandle = IntPtr.Zero;
try
{
// Create a render options object
RenderOptions options = new RenderOptions();
options.ReduceToBitonal = false;
options.ResolutionX = (double)resolutionInDpi.Width;
options.ResolutionY = (double)resolutionInDpi.Height;
options.ProduceDibSection = true;
// Express the selection area as userspace units
const double UserspaceDpi = 72.0;
options.SelectionX = UserspaceDpi * selectionInInches.Left;
options.SelectionY = UserspaceDpi * selectionInInches.Bottom;
options.SelectionWidth = UserspaceDpi * selectionInInches.Width;
options.SelectionHeight = UserspaceDpi * selectionInInches.Height;
// Render the selection area to a DIBSection
// Note: The caller is responsible for releasing the DIB handle using the DeleteObject
// Windows function call.
dibHandle = new IntPtr(document.RenderPageToDib(pageIndex, options));
}
catch (PdfXpressLicensingException)
{
//PDF Xpress is not licensed for this feature
}
catch (PdfXpressLibraryException)
{
//A problem was encountered
}
catch (PdfXpressException)
{
//A problem was encountered
}
finally
{
DeleteObject(dibHandle);//release GDI resources.
}
}
public void RenderPageToDibSection(Document document, Int32 pageIndex, SizeF resolutionInDpi)
{
// To render the entire page, choose a selection area where
// all dimensions are zero
RectangleF selectionInInches = new RectangleF(0.0f, 0.0f, 0.0f, 0.0f);
this.RenderPageToDibSection(document, pageIndex, resolutionInDpi, selectionInInches);
}
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| C# Example |
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// This code demonstrates rendering a PDF page to a Global Packed bitmap
public void RenderPageToGlobalPackedBitmap(Document document, Int32 pageIndex, SizeF resolutionInDpi, RectangleF selectionInInches)
{
IntPtr globalMemoryHandle = IntPtr.Zero;
try
{
// Create a render options object
RenderOptions options = new RenderOptions();
options.ReduceToBitonal = false;
options.ResolutionX = (double)resolutionInDpi.Width;
options.ResolutionY = (double)resolutionInDpi.Height;
options.ProduceDibSection = false;
// Express the selection area as userspace units
const double UserspaceDpi = 72.0;
options.SelectionX = UserspaceDpi * selectionInInches.Left;
options.SelectionY = UserspaceDpi * selectionInInches.Bottom;
options.SelectionWidth = UserspaceDpi * selectionInInches.Width;
options.SelectionHeight = UserspaceDpi * selectionInInches.Height;
// Render the selection area to a global memory buffer
// containing a packed bitmap.
// Note: The caller is responsible for releasing the global memory handle
// using the GlobalFree Windows function call
globalMemoryHandle = new IntPtr(document.RenderPageToDib(pageIndex, options));
}
catch (PdfXpressLicensingException)
{
//PDF Xpress is not licensed for this feature.
}
catch (PdfXpressLibraryException)
{
//A problem was encountered
}
catch (PdfXpressException)
{
// A problem was encountered
}
finally
{
GlobalFree(globalMemoryHandle);//release handle.
}
}
public void RenderPageToGlobalPackedBitmap(Document document, Int32 pageIndex, SizeF resolutionInDpi)
{
// To render the entire page, choose a selection area where
// all dimensions are zero
RectangleF selectionInInches = new RectangleF(0.0f, 0.0f, 0.0f, 0.0f);
this.RenderPageToGlobalPackedBitmap(document, pageIndex, resolutionInDpi, selectionInInches);
}
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| C# Example |
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// This code demonstrates rendering a PDF page to Local memory
public void RenderPageToRaw(Document document, Int32 pageIndex, SizeF resolutionInDpi, RectangleF selectionInInches)
{
try
{
// Create a render options object.
RenderOptions options = new RenderOptions();
options.ReduceToBitonal = false;
options.ResolutionX = (double)resolutionInDpi.Width;
options.ResolutionY = (double)resolutionInDpi.Height;
options.ProduceDibSection = true;
// Express the selection area as userspace units.
const double UserspaceDpi = 72.0;
options.SelectionX = UserspaceDpi * selectionInInches.Left;
options.SelectionY = UserspaceDpi * selectionInInches.Bottom;
options.SelectionWidth = UserspaceDpi * selectionInInches.Width;
options.SelectionHeight = UserspaceDpi * selectionInInches.Height;
// Render the selection area to local memory
ImageDataInfo imageData = document.RenderPageToImageData(pageIndex, options);
}
catch (PdfXpressLicensingException)
{
//PDF Xpress is not licensed for this feature.
}
catch (PdfXpressLibraryException)
{
//A problem was encountered
}
catch (PdfXpressException)
{
//A problem was encountered
}
finally
{
}
}
public void RenderPageToRaw(Document document, Int32 pageIndex, SizeF resolutionInDpi)
{
// To render the entire page, choose a selection area where
// all dimensions are zero.
RectangleF selectionInInches = new RectangleF(0.0f, 0.0f, 0.0f, 0.0f);
this.RenderPageToRaw(document, pageIndex, resolutionInDpi, selectionInInches);
}
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| C# Example |
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// This code demonstrates rendering a PDF page to EPS
public void RenderPageToEps(Document document, Int32 pageIndex)
{
try
{
// Create a render options object
RenderEpsOptions options = new RenderEpsOptions();
options.RenderAnnotations = true;
// Render the page to a DIBSection
// Note: The caller is responsible for releasing the DIB handle using the DeleteObject
// Windows function call.
byte[] epsByteArray = document.RenderPageToEps(pageIndex, options);
}
catch (PdfXpressLicensingException)
{
//PDF Xpress is not licensed for this feature.
}
catch (PdfXpressLibraryException)
{
//A problem was encountered
}
catch (PdfXpressException)
{
//A problem was encountered
}
finally
{
}
}
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