Reduce PPTX file size

If a .pptx has grown to tens of megabytes, the images inside it are almost always the cause. CompressEasy Desktop re-compresses those images and rebuilds the file to a fraction of the size — locally, with your slides unchanged.

Reduce PPTX size offline with the free CompressEasy Desktop app for macOS and Windows.

Available in the free desktop app

Videos over 200 MB and PowerPoint decks run fully offline with bundled FFmpeg. PDF compression stays local and requires Ghostscript.

Download desktop app

How it works

  1. Open CompressEasy Desktop and drag your .pptx files in.
  2. Choose a compression strength.
  3. Save the smaller presentations.

Target the real cause

Rather than deleting slides, the app shrinks the embedded media that actually drives file size, so you keep all your content.

Batch your decks

Have a folder of presentations? Compress them all at once instead of optimizing each one by hand inside PowerPoint.

Only smaller, never bigger

Each image is replaced only when the recompressed version is actually smaller, so you always get a leaner file.

Related tools

Frequently asked questions

How much smaller will my PPTX get?

Image-heavy decks often shrink by 50% or more. Text-only decks are already small, so savings will be modest.

Do I need PowerPoint installed?

No. CompressEasy Desktop works on the .pptx file directly without needing PowerPoint or Office.

Is it private?

Yes. Everything runs locally with no uploads.

All compression tools

Compress video

Compress by format

Convert formats

Compress to a target size

Compress PDF

Compress PowerPoint

Desktop app

From the blog

View all articles