PPT vs PPTX — Comparison & Free Converter
Fast, instant PPT to PPTX conversion. No signup required. Just drop your .ppt file and get .pptx in seconds.
Batch Settings
Some metadata may not survive
Your PPT file may contain OLE properties metadata. PPTX has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
Bien que le format PPT ait longtemps été un pilier des présentations, le PPTX s'est imposé comme la norme moderne, offrant une meilleure compatibilité, des fonctionnalités avancées et une sécurité accrue. Passer de l'un à l'autre n'est pas qu'une simple mise à jour technique ; c'est s'assurer que vos documents restent accessibles, modifiables et professionnels sur toutes les plateformes actuelles. Que vous prépariez un rapport crucial, une thèse académique ou une proposition de design, la conversion vers PPTX garantit une intégrité visuelle et une interopérabilité sans faille. Notre outil simplifie cette transition, vous permettant de moderniser vos fichiers en quelques clics, sans compromettre la mise en page ni le contenu. Adoptez la souplesse et la robustesse du PPTX pour toutes vos futures communications.
- Rapports administratifs pour l'État (France)
- Publications académiques (Suisse, Belgique)
- Propositions de design créatives (Québec)
Au Québec et en Belgique, de nombreuses institutions exigent désormais le format PPTX pour les soumissions officielles afin de garantir la conformité avec les standards bureautiques actuels et l'archivage à long terme.
About PPT to PPTX Conversion
PPT or PPTX — which format should you use? The answer depends on your needs. Here's a quick breakdown.
PPT is the legacy PowerPoint format (pre-2007). It has universal platform support. PPTX is Microsoft PowerPoint's modern format for slide presentations. It has universal platform support.
Full Name: PPT uses Microsoft PowerPoint Legacy, while PPTX uses Microsoft PowerPoint. Compression: PPT uses None (uncompressed), while PPTX uses Lossless. Typical File Size: PPT uses 1–50 MB, while PPTX uses 1–50 MB.
So when should you convert PPT to PPTX? This conversion is ideal when you You need maximum device and software compatibility. This conversion helps you upgrade to a modern format.
Converting PPT to PPTX maintains high quality with CocoConvert's optimised encoder settings.
If you've decided PPTX is the right choice, CocoConvert makes the conversion effortless. Upload your .ppt file, pick PPTX, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert PPT to PPTX
- 1
Choose your PPT file
Upload your .ppt file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to PPTX
Select .pptx from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large presentation files.
- 4
Get your PPTX file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert PPT to PPTX
Your PPT file is decoded and re-encoded as PPTX.
Your PPT file is uploaded and the format is validated
The file content is decoded into its raw representation
The data is re-encoded in PPTX format with optimal settings
The converted file is ready for download
PPT vs PPTX — Detailed Comparison
| Feature | .PPT | .PPTX |
|---|---|---|
| Full Name | Microsoft PowerPoint Legacy | Microsoft PowerPoint |
| Compression | None (uncompressed) | Lossless |
| Typical File Size | 1–50 MB | 1–50 MB |
| Platform Support | Universal | Universal |
| Browser Support | none | none |
| Year Created | 1987 | 2006 |
| Open Standard | No | Yes |
Should You Convert PPT to PPTX?
When to Convert
- ✓You need maximum device and software compatibility
Frequently Asked Questions
Should I use PPT or PPTX?
It depends on your goal. PPT preserves full quality. PPTX preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is PPTX higher quality than PPT?
Not necessarily. Converting PPT to PPTX maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert PPT to PPTX on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for PPT to PPTX?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for PPT to PPTX?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.