How do I compress a PPTX file?

Drop the PPTX onto the compressor above, keep Balanced or pick another level, and click Compress. Download the smaller PPTX when it's done; it usually takes a few seconds.

Does compressing PPTX reduce quality?

A little, by design: PPTX is a lossy format. Balanced is tuned to look the same for most uses; choose Light if you want to stay closer to the original.

How much smaller will my PPTX get?

Photo-heavy decks often shrink by more than half. Decks made mostly of text and shapes are already compressed and change little.

Can I compress PPTX to a specific size?

Yes. Set a target size in the compressor, or a percentage to reduce by, and the file is compressed to land at or just under it. Common sizes like 10 MB are listed on this page with the target preset.

Is it safe to compress PPTX files here?

Yes. Your file travels over an encrypted connection to an isolated sandbox created for your job only, and both the original and the result are deleted automatically.

Is the PPTX compressor free?

Yes. Cloud jobs like this one use the same free daily credits as cloud conversions, and there's no watermark.

Should I convert my PPTX instead?

Sometimes. For handouts, a PDF of the deck is usually smaller and opens anywhere. The PPTX to PDF converter does that in one step.

PPTX→smaller PPTX→PDF JPG→smaller PPTX→PPT PNG→smaller PPTX→ODP MP4→smaller PNG→JPG MP3→smaller JPG→PNG PDF→smaller PNG→WebP WebP→smaller JPG→WebP HEIC→smaller WebP→PNG DOCX→smaller WebP→JPG GIF→smaller HEIC→PNG SVG→smaller HEIC→JPG MOV→smaller MP4→MP3 AVIF→smaller PNG→JPEG JPG→JPEG M4A→smaller JPEG→PNG JPEG→JPG WebM→smaller PNG→PDF JPG→PDF MKV→smaller PDF→PNG PDF→JPG XLSX→smaller HEIC→WebP MP4→WebP EPUB→smaller PDF→DOCX DOCX→PDF AVI→smaller JPEG→WebP WebP→JPEG FLAC→smaller PNG→GIF JPG→GIF AAC→smaller GIF→PNG GIF→JPG ZIP→smaller MP4→MOV MOV→MP4 TIFF→smaller WebP→PDF HEIC→JPEG OGG→smaller WebP→GIF GIF→WebP Opus→smaller HEIC→PDF MP3→WAV 7Z→smaller WAV→MP3 JPEG→PDF ODT→smaller PDF→JPEG SVG→PNG TAR.GZ→smaller SVG→JPG HEIC→GIF ODS→smaller MOV→MP3 MP4→GIF ODP→smaller GIF→MP4 JPEG→GIF TAR.BZ2→smaller GIF→JPEG PNG→AVIF TAR.XZ→smaller JPG→AVIF AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF PNG→SVG JPG→SVG PDF→SVG SVG→WebP MOV→WebP MP4→WAV MP4→WebM WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG MP4→MKV MKV→MP4 HEIC→AVIF MP4→M4A JPEG→AVIF AVIF→JPEG JPEG→SVG MOV→GIF GIF→MOV WebM→MP3 AVIF→PDF MP3→FLAC FLAC→MP3 MP4→AVI AVI→MP4 MKV→MP3 GIF→AVIF AVIF→GIF SVG→GIF GIF→SVG WebM→WebP MOV→WAV XLSX→PDF CSV→PDF EPUB→PDF PDF→EPUB MOV→WebM WebM→MOV MKV→WebP PNG→ICO JPG→ICO ICO→PNG ICO→JPG MP3→AAC WAV→M4A AAC→MP3 M4A→WAV MP4→FLAC AVI→MP3 MOV→MKV MKV→MOV MOV→M4A DOCX→EPUB EPUB→DOCX CSV→DOCX PDF→TXT DOC→PDF TXT→PDF WebP→ICO ICO→WebP AVI→WebP WebM→GIF GIF→WebM SVG→AVIF MOV→AVI AVI→MOV HEIC→ICO MP4→AAC PNG→TIFF

Compress PPTX

Make PPTX files smaller without visible quality loss. Free, processed in an isolated sandbox and deleted automatically.

Isolated cloud sandbox, auto-deleted
Same format, smaller file
Batch & ZIP download

How to compress PPTX

1
Add your PPTX files
Drag and drop PPTX files onto the compressor, paste them, or click to browse. You can add several at once.
2
Pick a level or a target
Balanced is selected and suits most files. Choose Light to stay closer to the original or Strong for the smallest file, or set a target size or a percentage to reduce by.
3
Compress
Click Compress. Files are processed in an isolated cloud sandbox and are usually ready in seconds.
4
Download
Download each smaller PPTX, or everything at once as a ZIP.

What compression does to PPTX

LossyCloud sandbox

Shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched.

Light: Gentle: images are recompressed but stay close to the original; good for print.
BalancedDefault: The default: images are optimised for reading on screen, usually with no visible difference.
Strong: Smallest file: images are downsampled further; fine on screen, not for print.

Need it much smaller? For handouts, a PDF of the deck is usually smaller and opens anywhere. Convert PPTX to PDF

Common sizes

The compressor above takes any target size, or a percentage to reduce by. These pages preset the sizes people ask for most, for upload forms, email and chat limits.

10 MBPPTX to 10 MBBig files, emailable

PPTX · Microsoft PowerPoint Presentation

PPTX is the modern PowerPoint format for slide decks with layouts, media and animations.

Type: Presentation
Extension: .pptx
MIME: application/vnd.openxmlformats-officedocument.presentationml.presentation
Best for: presentations in PowerPoint, Keynote and Google Slides

Open standard

All PPTX conversions →

Compress other documents

All documents →

Compressing PPTX: frequently asked questions

Free, private and in your browser

Smaller PPTX files, in seconds.

No sign-up, no watermark. Files are processed in an isolated sandbox and deleted automatically.

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Most conversions never leave your device
Cloud files deleted automatically
No watermarks