Convert PowerPoint Presentations to TIFF in C++

Overview

TIFF (Tagged Image File Format) is a widely-used, lossless raster image format known for its exceptional quality and detailed preservation of graphics. Designers, photographers, and desktop publishers often choose TIFF to maintain layers, color accuracy, and original settings in their images.

Using Aspose.Slides, you can effortlessly convert your PowerPoint slides (PPT, PPTX) and OpenDocument slides (ODP) directly into high-quality TIFF images, ensuring your presentations retain maximum visual fidelity.

Convert a Presentation to TIFF

Using the Save method provided by the Presentation class, you can quickly convert an entire PowerPoint presentation to TIFF. The resulting TIFF images correspond to the default slide size.

This C++ code demonstrates how to convert a PowerPoint presentation to TIFF:

// Instantiate the Presentation class that represents a presentation file (PPT, PPTX, ODP, etc.).
auto presentation = MakeObject<Presentation>(u"Demo_File.pptx");

// Save the presentation as TIFF.
presentation->Save(u"Output.tiff", SaveFormat::Tiff);

presentation->Dispose();

Convert a Presentation to Black-and-White TIFF

The method set_BwConversionMode in the TiffOptions class allows you to specify the algorithm used when converting a colored slide or image to a black-and-white TIFF. Note that this setting applies only when the set_CompressionType method is set to CCITT4 or CCITT3.

Let’s say we have a “sample.pptx” file with the following slide:

This C++ code demonstrates how to convert the colored slide to a black-and-white TIFF:

auto tiffOptions = MakeObject<TiffOptions>();
tiffOptions->set_CompressionType(TiffCompressionTypes::CCITT4);
tiffOptions->set_BwConversionMode(BlackWhiteConversionMode::Dithering);

auto presentation = MakeObject<Presentation>(u"sample.pptx");
presentation->Save(u"output.tiff", SaveFormat::Tiff, tiffOptions);

presentation->Dispose();

The result:

Convert a Presentation to TIFF with Custom Size

If you require a TIFF image with specific dimensions, you can set your desired values using methods available in TiffOptions. For instance, the set_ImageSize method allows you to define the size of the resulting image.

This C++ code demonstrates how to convert a PowerPoint presentation to TIFF images with a custom size:

// Instantiate the Presentation class that represents a presentation file (PPT, PPTX, ODP, etc.).
auto presentation = MakeObject<Presentation>(u"sample.pptx");

auto tiffOptions = MakeObject<TiffOptions>();

// Set the compression type.
tiffOptions->set_CompressionType(TiffCompressionTypes::Default);
/*
Compression types:
    Default - Specifies the default compression scheme (LZW).
    None - Specifies no compression.
    CCITT3
    CCITT4
    LZW
    RLE
*/

// The depth depends on the compression type and cannot be set manually.

// Set the image DPI.
tiffOptions->set_DpiX(200);
tiffOptions->set_DpiY(200);

// Set the image size.
tiffOptions->set_ImageSize(System::Drawing::Size(1728, 1078));

auto notesOptions = MakeObject<NotesCommentsLayoutingOptions>();
notesOptions->set_NotesPosition(NotesPositions::BottomFull);
tiffOptions->set_SlidesLayoutOptions(notesOptions);

// Save the presentation as TIFF with the specified size.
presentation->Save(u"custom_size.tiff", SaveFormat::Tiff, tiffOptions);

presentation->Dispose();

Convert a Presentation to TIFF with Custom Image Pixel Format

Using the set_PixelFormat method from the TiffOptions class, you can specify your preferred pixel format for the resulting TIFF image.

This C++ code demonstrates how to convert a PowerPoint presentation to a TIFF image with a custom pixel format:

// Instantiate the Presentation class that represents a presentation file (PPT, PPTX, ODP, etc.).
auto presentation = MakeObject<Presentation>(u"Demo_File.pptx");

auto tiffOptions = MakeObject<TiffOptions>();

tiffOptions->set_PixelFormat(ImagePixelFormat::Format8bppIndexed);
/*
ImagePixelFormat contains the following values (as stated in the documentation):
    Format1bppIndexed - 1 bit per pixel, indexed.
    Format4bppIndexed - 4 bits per pixel, indexed.
    Format8bppIndexed - 8 bits per pixel, indexed.
    Format24bppRgb    - 24 bits per pixel, RGB.
    Format32bppArgb   - 32 bits per pixel, ARGB.
*/

// Save the presentation as TIFF with the specified image size.
presentation->Save(u"Custom_Image_Pixel_Format.tiff", SaveFormat::Tiff, tiffOptions);

presentation->Dispose();

Tip

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FAQs

1. Can I convert an individual slide instead of entire PowerPoint presentation to TIFF?

Yes. Aspose.Slides allows you to convert individual slides from PowerPoint and OpenDocument presentations into TIFF images separately.

2. Is there any limit to the number of slides when converting a presentation to TIFF?

No, Aspose.Slides does not impose any restrictions on the number of slides. You can convert presentations of any size into TIFF format.

3. Are PowerPoint animations and transition effects preserved when converting slides to TIFF?

No, TIFF is a static image format. Therefore, animations and transition effects are not preserved; only static snapshots of slides are exported.