Compress PowerPoint
Shrink large PPTX presentations so they're easy to email and share. Slide images are optimized while layouts, animations and text stay unchanged.
Drag & drop your files, or browse
PDF, JPG, PNG, WebP, GIF, TIFF, Word, PowerPoint, Excel · Max 200 MB · Deleted after 60 min
PowerPoint Compressor features
- Compress PPTX and ODP presentations
- Optimizes photos and screenshots on slides
- Keeps slide layouts, transitions and animations
- Opens in PowerPoint, Keynote, Google Slides and LibreOffice
- Shows the exact new size before download
How to compress a PowerPoint
Upload the PPTX
Drag and drop your PowerPoint presentation into the compressor, or click to choose it.
See the three sizes
CNVRT compresses the deck at light, recommended and strong levels and shows the exact result for each.
Choose a level
Recommended keeps slide images at up to 1920 pixels, which is full HD and sharp on projectors and big screens.
Download
Save the smaller .pptx and present or share it as usual.
Why presentations get so large
Presentations are image-heavy: full-screen photos, screenshots and logos are pasted in at their original camera or screen resolution. A 30-slide deck can reach 100 MB or more, too big for most email services and slow to open.
CNVRT optimizes every JPG and PNG inside the presentation and scales oversized images to full-HD dimensions. Slide layouts, transitions, animations, speaker notes and text are left exactly as they are.
Still a normal PowerPoint file
The result keeps the .pptx format and structure, so it opens in PowerPoint, PowerPoint Online, Keynote, Google Slides and LibreOffice Impress. Embedded video and audio are kept unchanged.
Tips for the best results
- 1.Photo-heavy decks often shrink by 70–95% at the recommended level.
- 2.Presenting on a 4K display? Choose the light level to keep more image detail.
- 3.Embedded videos are not re-encoded; if the deck is still large, the videos are likely the cause.
- 4.Using an older .ppt file? Convert it to PPTX first, then compress.
Compress PowerPoint: frequently asked questions
Will my animations and transitions still work?
Yes. Only images are optimized; animations, transitions, layouts, notes and text are unchanged.
Which presentation formats can I compress?
PowerPoint PPTX and OpenDocument ODP files up to 200 MB. Convert older .ppt files to PPTX first.
Will images look blurry on a projector?
No. The recommended level keeps images at up to 1920 pixels wide (full HD), which matches typical projectors and screens.
Are embedded videos compressed?
No. Videos and audio are kept as they are to avoid playback problems.
Is it free?
Yes, compressing presentations is free, with no signup and no watermark.
Private & secure
Encrypted transfer
Files travel over HTTPS and are only accessible from your browser session.
Auto-deleted
Everything is deleted within 60 minutes, or right away with one click.
No watermark
Free, no signup, and nothing added to your files.