Does PPT → PPTX lose quality?

The target format compression is neutral (lossless or container-only) - neither degrades nor improves quality.

Animations preserved?

PPTX → ODP - yes. PPTX → PDF / PNG - no (PDF / images are static). Slides render in their resting state.

Apple Keynote (.key)?

Read-only. Apple uses a proprietary format - we emit to PPTX / PDF.

PPTX → PNG produces one image per slide. For one slide only, crop the resulting PDF page.

Custom fonts may be replaced with defaults. Embed fonts in PPTX before converting (File → Options → Embed fonts).

Is the conversion safe?

Yes. Small files convert inside your browser - never uploaded. Larger ones land on our server temporarily and are wiped automatically: 200 MB after 10 min, 100 MB after 20 min, 50 MB after 30 min, smaller after one hour. You can also delete them instantly after download.

Yes - 200 MB max per file. Larger files get rejected for performance and cost reasons.

Do you preserve original quality?

Depends on the pair. Lossy compression (e.g. JPG, MP3) always trims something - we set sensible defaults. Lossless (FLAC, PNG, ZIP) keeps everything 1:1.

Do I need an account?

No. The converter works right away - no signup, no login, no payment.

PPT to PPTX converter

PPT to PPTX converter online. Free, no watermarks, no account.

Runs in your browser

PPT → PPTX converter

PPT to PPTX conversion in 3 steps: upload, click convert, download.

Files auto-delete from our server

Anything you upload is wiped 3 minutes after you close this tab or leave the tool. Protects your privacy and keeps our disks clean.

Drop a file here or click to pick one

The file goes to our server, gets converted, and is wiped automatically.

Up to 200 MB per file

Your privacy. Small files convert locally in your browser. Larger ones land on our server temporarily and are wiped automatically, latest after one hour. You can also delete them instantly after downloading.

Convert PPT to PPTX

PPT to PPTX converter: upload, click convert, download the result. Free, no watermarks, no account. Small files convert inside your browser (never uploaded). Larger ones go to our server and disappear automatically after a few minutes. Hit "Delete now" to wipe them instantly after download.

How to convert

Pick your PPT file - drag it onto the dropzone or click to choose.
The target format PPTX is already selected.
Hit Convert and wait a few seconds. Larger files take longer.
Download the result. Press Delete now to wipe the server copy immediately.

When to use it

Send slides - PPTX → PDF (opens everywhere, no Office needed).
Open in PowerPoint - KEY / ODP → PPTX.
Export as images - PPTX → PNG (one frame per slide).
PPT → PPTX - common case.

Frequently asked questions

converterFactory.pairDifference.ppt_pptx

Related tools

File Converter

Swap a file format in 3 steps. 200+ formats: images, video, audio, documents, archives, ebooks, fonts.