# Compress PPTX

> Compress Microsoft PowerPoint Presentation (PPTX) files online for free. The compressor shrinks the embedded photos and repacks the document at maximum compression; text and layout are untouched. Processed in an isolated cloud sandbox and deleted automatically. Or pick an exact size, like 10 MB.

URL: https://www.converterrr.com/compress-pptx

- Compression: lossy, runs in an isolated cloud sandbox (deleted automatically).
- API: `POST /api/v1/jobs` with `"operation": "compress"` and an optional `compression_level` or `target_size` (paid plans).
- Format: [PPTX converter](https://www.converterrr.com/pptx-converter), [Compress documents](https://www.converterrr.com/compress-documents).

## What compression does to PPTX

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.
- **Balanced (default):** 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](https://www.converterrr.com/pptx-to-pdf).

## Common sizes

- [Compress PPTX to 10 MB](https://www.converterrr.com/compress-pptx-to-10mb): Big files, emailable

## 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.

## Good to know

- Decks get heavy from full-resolution photos and screenshots dropped onto slides. Those images are shrunk; slides, animations and speaker notes stay as they are.
- Embedded video is often the single biggest item in a deck. If yours has some, linking to the video instead of embedding it saves the most.
- Need to meet an upload limit? Set a target size (or a percentage to reduce by) in the compressor and the presentation is compressed to fit.
- PPTX files are compressed in an isolated cloud sandbox created just for your job; the upload and the result are deleted automatically afterwards.

## About the PPTX format

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

|  | PPTX |
| --- | --- |
| Full name | Microsoft PowerPoint Presentation |
| Type | Presentation |
| Extensions | .pptx |
| MIME type | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| Best for | presentations in PowerPoint, Keynote and Google Slides |
| Properties | open standard |

## Compress other documents

[Compress PDF](https://www.converterrr.com/compress-pdf), [Compress DOCX](https://www.converterrr.com/compress-docx), [Compress XLSX](https://www.converterrr.com/compress-xlsx), [Compress ODT](https://www.converterrr.com/compress-odt), [Compress ODP](https://www.converterrr.com/compress-odp), [Compress ODS](https://www.converterrr.com/compress-ods), [Compress EPUB](https://www.converterrr.com/compress-epub)

## Compressing PPTX: frequently asked questions

### 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.