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Aspose.Slides for Python via .NET 25.1 Release Notes
New Features and Enhancements
Key | Summary | Category | Related Documentation |
---|---|---|---|
SLIDESNET-42954 | Add support for importing embedded fonts from PDF | Feature | |
SLIDESNET-43531 | Permanent method for SVG to EMF conversion | Feature | https://docs.aspose.com/slides/net/image/#adding-svg-to-presentations |
SLIDESNET-44626 | Extracting Office documents core, custom and extended properties | Feature | https://docs.aspose.com/slides/net/presentation-properties/ |
SLIDESNET-44775 | Add an option to disable the generation of the thumbnail when saving a presentation in PPTX format | Feature | https://docs.aspose.com/slides/net/save-presentation/ |
SLIDESNET-41195 | Save slide to metafile | Feature | https://products.aspose.com/slides/net/conversion/ppt-to-emf/ |
SLIDESNET-44655 | Find out if a presentation file is corrupted or not | Investigation | https://docs.aspose.com/slides/net/manage-presentation/ |
SLIDESNET-44734 | Checking a PowerPoint presentation file for corruption | Investigation | https://docs.aspose.com/slides/net/manage-presentation/ |
Other Improvements and Changes
Key | Summary | Category | Related Documentation |
---|---|---|---|
SLIDESPYNET-245 | Use Aspose.Slides for Net 25.1 features | Enhancement | https://releases.aspose.com/slides/net/release-notes/2025/aspose-slides-for-net-25-1-release-notes/ |
Public API Changes
Support for New Extended Properties of Presentation Documents
The HeadingPair
class and IHeadingPair
interface have been added. It represents a ‘Heading pair’ property of the document and stores the group name of document parts and the number of parts in this group.
Simplified code of IHeadingPair
:
class IHeadingPair:
@property
def name(self) -> str:
...
@property
def count(self) -> int:
...
The following properties have also been added to the IDocumentProperties
interface and the DocumentProperties
class:
scale_crop
property indicates the display mode of the document thumbnail;links_up_to_date
property indicates whether hyperlinks in a document are up-to-date;hyperlinks_changed
property specifies that one or more hyperlinks in this part were updated exclusively in this part by a producer;slides
read-only property specifies the total number of slides in a presentation document;hidded_slides
read-only property specifies the number of hidden slides in a presentation document;notes
read-only property specifies the number of slides in a presentation containing notes;paragraphs
read-only property specifies the total number of paragraphs found in a document if applicable;words
read-only property specifies the total number of words contained in a document;multimedia_clips
read-only property specifies the total number of sound or video clips that are present in the document;titles_of_parts
read-only property specifies the title of each document part;heading_pairs
read-only property indicates the grouping of document parts and the number of parts in each group;
The following code sample shows how to get and change the properties of a presentation document:
import aspose.slides as slides
with slides.Presentation("Metadata.pptx") as presentation:
document_properties = presentation.document_properties
# Print the read-only properties
print("Slides:", document_properties.slides)
print("HiddenSlides:", document_properties.hidden_slides)
print("Notes:", document_properties.notes)
print("Paragraphs:", document_properties.paragraphs)
print("MultimediaClips:", document_properties.multimedia_clips)
print("TitlesOfParts:", "; ".join(document_properties.titles_of_parts))
print("HeadingPairs:")
heading_pairs = document_properties.heading_pairs
if len(heading_pairs) > 0:
for heading_pair in heading_pairs:
print(heading_pair.name, heading_pair.count)
# Change several boolean properties
document_properties.scale_crop = True
document_properties.links_up_to_date = True
document_properties.hyperlinks_changed = True
# Save the presentation with changed properties
presentation.save("Metadata-upd.pptx", slides.export.SaveFormat.PPTX)
Also, you can use the IPresentationInfo
interface to read and change the document properties:
import aspose.slides as slides
document_info = slides.PresentationFactory.instance.get_presentation_info("Metadata.pptx")
document_properties = document_info.read_document_properties()
# Print the read-only properties
print("Slides:", document_properties.slides)
print("Paragraphs:", document_properties.paragraphs)
print("MultimediaClips:", document_properties.multimedia_clips)
print("TitlesOfParts:", " ".join(document_properties.titles_of_parts))
# Change several boolean properties
document_properties.scale_crop = True
document_properties.links_up_to_date = True
document_properties.hyperlinks_changed = True
# Save the presentation with changed properties
document_info.update_document_properties(document_properties)
document_info.write_binded_presentation("Metadata.pptx")
Option to Control Thumbnail Generation
A new property, refresh_thumbnail
, has been added to the IPptxOptions
interface and the PptxOptions
class. It allows disabling the generation of a new thumbnail when saving a presentation in the PPTX format.
The following code sample shows how to save the PPTX presentation without generation of the new thumbnail:
import aspose.slides as slides
with slides.Presentation("demo.pptx") as pres:
pptx_options = slides.export.PptxOptions()
pptx_options.refresh_thumbnail = False
pres.save("result_with_old_thumbnail.pptx", slides.export.SaveFormat.PPTX, pptx_options)
Method IPictureFillFormat.compress_image
Has Been Added
An additional method, compress_image
, has been added to the IPictureFillFormat
interface and the PictureFillFormat
class. It allows setting the target resolution for compression using a value from the PicturesCompression
enum.
This method compresses an image by reducing its size based on the shape size and specified resolution, with the option to delete cropped areas. It adjusts the picture’s size and resolution similarly to PowerPoint’s Picture Format -> Compress Pictures -> Resolution feature.
The following example demonstrates how to use the compress_image
method to reduce the size of an image in a presentation by setting a target resolution and removing cropped areas:
import aspose.slides as slides
with slides.Presentation("demo.pptx") as pres:
slide = pres.slides[0]
# Get the PictureFrame from the slide
pic_frame = slide.shapes[0]
# Compress the image with a target resolution of 150 DPI (Web resolution) and remove cropped areas
result = pic_frame.picture_format.compress_image(True, slides.export.PicturesCompression.DPI150)
# Check the result of the compression
if result:
print("Image successfully compressed.")
else:
print("Image compression failed or no changes were necessary.")
Method ISlide.write_as_emf
Has Been Added
A new method, write_as_emf
, has been added to the ISlide
interface and the Slide
class. This method saving the slide content as an EMF file.
The following code example demonstrates how to convert the first slide from a PowerPoint presentation into a metafile.
import aspose.slides as slides
with slides.Presentation("Presentation.pptx") as pres, open("Result.emf", "wb") as fs:
# Saves the first slide as a metafille
pres.slides[0].write_as_emf(fs)
Method ISvgImage.write_as_emf
Has Been Added
A new method, write_as_emf
, has been added to the ISvgImage
interface and the SvgImage
class. This method allows saving the SVG image as an EMF file.
The following example demonstrates how to save the SVG image into a metafile.
This sample demonstrates how to add the SVG image as a metafile to the presentation image collection:
import aspose.slides as slides
# Creates the new SVG image
with open("content.svg", "rb") as f1, open("SvgAsEmf.emf", "wb") as f2:
svg_image = slides.SvgImage(f1)
svg_image.write_as_emf(f2)
This sample demonstrates how to add the SVG image as a metafile to the presentation image collection:
import aspose.slides as slides
import io
with slides.Presentation() as pres, open("content.svg", "rb") as fs:
# Creates the new SVG image
svg_image = slides.SvgImage(fs)
b = io.BytesIO()
# Saves the SVG image as a metafille
svg_image.write_as_emf(b)
b.seek(0)
# Adds metafile to the image collection
pres.images.add_image(b)