Convert PPTX to PPSX

PPTX to PPSX converter that runs entirely in your browser. 100% free, no signup, no upload — your files never leave your device. One-click batch conversion.

Conversions

Drop any file here or click to browse

All file types supported

About formats

PPTX

PPTX is the Microsoft PowerPoint presentation format introduced with Office 2007, based on the Office Open XML standard. PPTX stores slides containing text, images, animations, transitions, master layouts and embedded media in a ZIP archive of XML parts. PPTX is the standard format for presentations and is supported by PowerPoint, LibreOffice Impress, Google Slides, and Apple Keynote.

Developer: Microsoft
Initial release: 2007
Compression: Lossless
Color depth: up to 32-bit
Transparency: Yes
Animation: Yes

Best for

Creating business presentations
Slide decks with animations and transitions
Collaborative presentation editing
Conference and lecture slides
Embedded-media-rich presentations

Pros

+Standard PowerPoint presentation format
+Stores text, images, animations, and transitions
+ZIP-based OOXML open standard
+Supported by PowerPoint, Google Slides, Keynote, and Impress

Cons

−Large files with embedded media
−Formatting can shift across suites
−Overkill for simple slide sharing
−Complex structure for programmatic parsing

PPSX

PPSX is a Microsoft PowerPoint Slide Show format that opens directly in slide-show (read-only presentation) mode rather than editing mode. PPSX is structured identically to PPTX, but the .ppsx extension signals that the file is intended to be displayed, not edited. PPSX is used for distributing finished PowerPoint presentations.

Developer: Microsoft
Initial release: 2007
Compression: Lossless
Color depth: up to 32-bit
Transparency: Yes
Animation: Yes

Best for

Distributing finished slide shows
Auto-playing presentations in slideshow mode
Sharing read-only presentation decks
Conference display loops
Self-running kiosk presentations

Pros

+Opens directly in slide-show mode
+Identical structure to PPTX
+Signals intent for display not editing
+Supported by PowerPoint and compatible suites

Cons

−Not intended for editing workflow
−Requires PowerPoint or compatible viewer
−Confusing vs PPTX for some users
−No additional features over PPTX

How to convert PPTX to PPSX

1
Select PPTX files from your computer, Google Drive, Dropbox, a URL, or by dragging them onto the page.
2
Choose ppsx — or any other format you need as a result (more than 200 formats supported).
3
Let the file convert, then download your ppsx file right away.

PPTX vs PPSX

Property	PPTX	PPSX
Compression	Lossless	Lossless
Transparency	Yes	Yes
Animation	Yes	Yes
DRM support	Yes	Yes
Open format	Yes	Yes

When to use PPTX vs PPSX

PPTX

Creating business presentations
Slide decks with animations and transitions
Collaborative presentation editing
Conference and lecture slides
Embedded-media-rich presentations

PPSX

Distributing finished slide shows
Auto-playing presentations in slideshow mode
Sharing read-only presentation decks
Conference display loops
Self-running kiosk presentations

Use cases for PPTX → PPSX

Creating business presentations
Slide decks with animations and transitions
Collaborative presentation editing
Conference and lecture slides
Embedded-media-rich presentations
Distributing finished slide shows
Auto-playing presentations in slideshow mode
Sharing read-only presentation decks
Conference display loops
Self-running kiosk presentations

Frequently Asked Questions

Is converting PPTX to PPSX free?

Yes. This PPTX → PPSX converter runs entirely in your browser and is completely free — no account, no credits, no watermark.

Which devices and platforms can I use to convert PPTX to PPSX?

Any modern device with a current web browser: Windows, macOS, Linux, Android, iPhone and iPad. There is nothing to install — the conversion happens locally.

Are my PPTX files uploaded to a server?

No. Files never leave your device. The entire PPTX → PPSX conversion runs locally in your browser, so your data stays private.

Can I convert multiple PPTX files at once?

Yes — batch conversion is supported. Add as many PPTX files as you like and convert them to PPSX in one pass, then download the results together.

What is the maximum file size?

There is no fixed server-side limit because the conversion happens in your browser. Practical limits depend on the available memory and CPU of your device.

Will converting PPTX to PPSX lose quality?

No. PPSX is a lossless format (or used in a lossless mode here), so the original data from your PPTX file is preserved bit-for-bit in the converted result.

Will transparency be preserved when converting PPTX to PPSX?

Yes. Both PPTX and PPSX support alpha-channel transparency, so transparent areas of your file are kept unchanged in the PPSX output.

How will the file size change after converting PPTX to PPSX?

Both formats use comparable compression, so the PPSX output will be similar in size to your PPTX file — typically within 10–20% of each other.

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FREE

100% Free

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SIGNUP

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PRIVACY

Private & Secure

Your files never leave your device. All processing is completed locally for maximum privacy.

BATCH

Batch Conversion

Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.

LOCAL

Runs in Browser

Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.

FORMATS

200+ Formats

Supports a wide variety of formats including images, documents, audio, video, and more.

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