# Save Presentations in Python

> Discover how to save presentations in Python using Aspose.Slides—export to PowerPoint or OpenDocument while retaining layouts, fonts and effects.

Source: https://docs.aspose.com/slides/python-net/save-presentation/
Updated: 2026-08-12


## **Overview**

[Open a Presentation in Python](/slides/python-net/open-presentation/) described how to use the [Presentation](https://reference.aspose.com/slides/python-net/aspose.slides/presentation/) class to open a presentation. This article explains how to create and save presentations. The [Presentation](https://reference.aspose.com/slides/python-net/aspose.slides/presentation/) class contains a presentation’s contents. Whether you’re creating a presentation from scratch or modifying an existing one, you’ll want to save it when you’re finished. With Aspose.Slides for Python, you can save to a **file** or **stream**. This article explains the different ways to save a presentation.

## **Save Presentations to Files**

Save a presentation to a file by calling the [Presentation](https://reference.aspose.com/slides/python-net/aspose.slides/presentation/) class’s `save` method. Pass the file name and save format to the method. The following example show how to save a presentation with Aspose.Slides for Python.

```py
import aspose.slides as slides

# Instantiate the Presentation class that represents a presentation file.
with slides.Presentation() as presentation:
    
    # Do some work here...

    # Save the presentation to a file.
    presentation.save("output.pptx", slides.export.SaveFormat.PPTX)
```

## **Save Presentations to Streams**

You can save a presentation to a stream by passing an output stream to the [Presentation](https://reference.aspose.com/slides/python-net/aspose.slides/presentation/) class’s `save` method. A presentation can be written to many stream types. In the example below, we create a new presentation and save it to a file stream.

```py
import aspose.slides as slides

# Instantiate the Presentation class that represents a presentation file.
with slides.Presentation() as presentation:
    with open("output.pptx", "bw") as file_stream:
        # Save the presentation to the stream.
        presentation.save(file_stream, slides.export.SaveFormat.PPTX)
```

## **Save Presentations with a Predefined View Type**

Aspose.Slides for Python lets you set the initial view that PowerPoint uses when the generated presentation opens through the [ViewProperties](https://reference.aspose.com/slides/python-net/aspose.slides/viewproperties/) class. Set the `last_view` property to a value from the [ViewType](https://reference.aspose.com/slides/python-net/aspose.slides/viewtype/) enumeration.

```py
import aspose.slides as slides

with slides.Presentation() as presentation:
    presentation.view_properties.last_view = slides.ViewType.SLIDE_MASTER_VIEW
    presentation.save("slide_master_view.pptx", slides.export.SaveFormat.PPTX)
```

## **Save Presentations in the Strict Office Open XML Format**

Aspose.Slides lets you save a presentation in the Strict Office Open XML format. Use the [PptxOptions](https://reference.aspose.com/slides/python-net/aspose.slides.export/pptxoptions/) class and set its conformance property when saving. If you set `Conformance.ISO_29500_2008_STRICT`, the output file is saved in the Strict Office Open XML format.

The example below creates a presentation and saves it in the Strict Office Open XML format.

```py
import aspose.slides as slides

options = slides.export.PptxOptions()
options.conformance = slides.export.Conformance.ISO_29500_2008_STRICT

# Instantiate the Presentation class that represents a presentation file.
with slides.Presentation() as presentation:
    # Save the presentation in the Strict Office Open XML format.
    presentation.save("strict_office_open_xml.pptx", slides.export.SaveFormat.PPTX, options)
```

## **Save Presentations in Office Open XML Format in Zip64 Mode**

An Office Open XML file is a ZIP archive that imposes 4 GB (2^32 bytes) limits on the uncompressed size of any file, the compressed size of any file, and the total size of the archive, and it also limits the archive to 65,535 (2^16-1) files. ZIP64 format extensions raise these limits to 2^64.

The [PptxOptions.zip_64_mode](https://reference.aspose.com/slides/python-net/aspose.slides.export/pptxoptions/zip_64_mode/) property lets you choose when to use ZIP64 format extensions when saving an Office Open XML file.

This property provides the following modes:

- `IF_NECESSARY` uses ZIP64 format extensions only if the presentation exceeds the limitations above. This is the default mode.
- `NEVER` never uses ZIP64 format extensions.
- `ALWAYS` always uses ZIP64 format extensions.

The following code demonstrates how to save a presentation as a PPTX file with ZIP64 format extensions enabled:

```py
import aspose.slides as slides

pptx_options = slides.export.PptxOptions()
pptx_options.zip_64_mode = slides.export.Zip64Mode.ALWAYS

with slides.Presentation("sample.pptx") as presentation:
    presentation.save("output_zip64.pptx", slides.export.SaveFormat.PPTX, pptx_options)
```

{{% alert title="NOTE" color="warning" %}}

When you save with `Zip64Mode.NEVER`, a [PptxException](https://reference.aspose.com/slides/python-net/aspose.slides/pptxexception/) is thrown if the presentation cannot be saved in ZIP32 format.

{{% /alert %}}

## **Save Presentations in Office Open XML Format with Compression Levels**

When working with large presentations, you can adjust the compression level to balance file size and processing time. Depending on your requirements, you may prefer faster processing or smaller output files.

Aspose.Slides provides the [PptxOptions.compression_level](https://reference.aspose.com/slides/python-net/aspose.slides.export/pptxoptions/compression_level/) property, which allows you to specify the compression level used when saving a presentation in Office Open XML format.

The following compression levels are available:

- [**NONE**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): No compression is applied. Files are stored as-is.
- [**LEVEL1**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): The fastest compression with the lowest compression ratio.
- [**LEVEL2**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Faster compression with a slightly better compression ratio than **LEVEL1**.
- [**LEVEL3**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Provides better compression than **LEVEL2** with a moderate impact on processing time.
- [**LEVEL4**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Provides better compression than **LEVEL3**.
- [**LEVEL5**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Provides improved compression over **LEVEL4** with additional processing time.
- [**LEVEL6**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Standard compression that offers a good balance between processing speed and file size. This is the *default compression level*.
- [**LEVEL7**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Provides better compression than **LEVEL6** with slower processing.
- [**LEVEL8**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Provides better compression than **LEVEL7**.
- [**LEVEL9**](https://reference.aspose.com/slides/python-net/aspose.slides.export/compressionlevel/): Maximum compression. Produces the smallest file size at the cost of the longest processing time.

The following example demonstrates how to save a presentation as a PPTX file *without compression*:

```py
import aspose.slides as slides

pptx_options = slides.export.PptxOptions()
pptx_options.compression_level = slides.export.CompressionLevel.NONE

with slides.Presentation("sample.pptx") as presentation:
    presentation.save("sample_out.pptx", slides.export.SaveFormat.PPTX, pptx_options)
```

This example shows how to save a presentation as a PPTX file with *maximum compression*:

```py
import aspose.slides as slides

pptx_options = slides.export.PptxOptions()
pptx_options.compression_level = slides.export.CompressionLevel.LEVEL9

with slides.Presentation("sample.pptx") as presentation:
    presentation.save("sample_level9.pptx", slides.export.SaveFormat.PPTX, pptx_options)
```

## **Save Presentations without Refreshing the Thumbnail**

The [PptxOptions.refresh_thumbnail](https://reference.aspose.com/slides/python-net/aspose.slides.export/pptxoptions/refresh_thumbnail/) property controls thumbnail generation when saving a presentation to PPTX:

- If set to `True`, the thumbnail is refreshed during save. This is the default.
- If set to `False`, the current thumbnail is preserved. If the presentation has no thumbnail, none is generated.

In the code below, the presentation is saved to PPTX without refreshing its thumbnail.

```py
import aspose.slides as slides

pptx_options = slides.export.PptxOptions()
pptx_options.refresh_thumbnail = False

with slides.Presentation("sample.pptx") as presentation:
    presentation.save("output.pptx", slides.export.SaveFormat.PPTX, pptx_options)
```

{{% alert title="Info" color="info" %}}

This option helps reduce the time required to save a presentation in PPTX format.

{{% /alert %}}

{{% alert title="Info" color="info" %}}

Aspose has developed a [free PowerPoint Splitter app](https://products.aspose.app/slides/splitter) using its own API. The app lets you split a presentation into multiple files by saving selected slides as new PPTX or PPT files.

{{% /alert %}}

## **FAQ**

**Is "fast save" (incremental save) supported so only changes are written?**

No. Saving creates the full target file each time; incremental "fast save" isn’t supported.

**Is it thread-safe to save the same Presentation instance from multiple threads?**

No. A [Presentation](https://reference.aspose.com/slides/python-net/aspose.slides/presentation/) instance [isn’t thread-safe](/slides/python-net/multithreading/); save it from a single thread.

**What happens to hyperlinks and externally linked files when saving?**

[Hyperlinks](/slides/python-net/manage-hyperlinks/) are preserved. External linked files (e.g., videos via relative paths) aren’t copied automatically—ensure the referenced paths remain accessible.

**Can I set/save document metadata (Author, Title, Company, Date)?**

Yes. Standard [document properties](/slides/python-net/presentation-properties/) are supported and will be written to the file on save.