Convert PPT to PPSX

PPT 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

PPT

PPT is the legacy presentation format used by Microsoft PowerPoint 97-2003, based on the Compound File Binary Format. PPT stores slides with formatted text, raster images, and multimedia in structured binary streams. Converting PPT files to modern PPTX, PDF, and image formats enables editing and viewing across all modern devices.

Developer: Microsoft
Initial release: 1997
Compression: Lossless
Color depth: up to 24-bit
Transparency: Yes
Animation: Yes

Best for

Legacy PowerPoint 97-2003 presentations
Archival slide deck compatibility
Opening older office documents
Extracting slide content from legacy files
Converting old presentations to modern formats

Pros

+Widely recognized legacy PowerPoint format
+Contains slide layouts, text, and embedded graphics
+Supported by older office software and viewers
+Easily converted to modern PPTX and PDF

Cons

−Proprietary binary format replaced by open XML
−Limited compatibility with modern web tools
−Prone to macro security vulnerabilities
−No native support for modern Office Open XML features

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 PPT to PPSX

1
Select PPT 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.

PPT vs PPSX

Property	PPT	PPSX
Compression	Lossless	Lossless
Transparency	Yes	Yes
Animation	Yes	Yes
DRM support	Yes	Yes
Open format	No	Yes

When to use PPT vs PPSX

PPT

Legacy PowerPoint 97-2003 presentations
Archival slide deck compatibility
Opening older office documents
Extracting slide content from legacy files
Converting old presentations to modern formats

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 PPT → PPSX

Legacy PowerPoint 97-2003 presentations
Archival slide deck compatibility
Opening older office documents
Extracting slide content from legacy files
Converting old presentations to modern formats
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 PPT to PPSX free?

Yes. This PPT → 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 PPT 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 PPT files uploaded to a server?

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

Can I convert multiple PPT files at once?

Yes — batch conversion is supported. Add as many PPT 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 PPT to PPSX lose quality?

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

Will transparency be preserved when converting PPT to PPSX?

Yes. Both PPT 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 PPT to PPSX?

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

Related Conversions

Specific converters

FREE

100% Free

No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.

SIGNUP

No Signup Required

Start converting immediately without creating an account or sharing email address.

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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