Convert PPTX to APNG Online
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Supports: PPTX
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Need help?Convert PPTX to APNG Online
Turn a PowerPoint .pptx deck into a single animated APNG that cycles through your slides — one frame per slide — and plays in a browser without PowerPoint installed. Each slide is rendered to a crisp, lossless frame and the frames are stitched into one looping animation, so a 12-slide deck becomes a 12-frame loop with full 24-bit color and no GIF-style banding. Set the loop speed, cap the resolution, and download with no sign-up and no watermark.
How to Convert PPTX to APNG
- Upload Your PPTX File: Drag your
.pptxonto the page or click Upload to browse. Each slide is rendered to an image, then the slides are assembled into one looping APNG; the file is sent over an encrypted connection. Queue several decks at once if you like. - Set Framerate: Choose how fast the loop advances from the Framerate dropdown — 10 FPS is the default; lower it to hold each slide on screen longer, since every slide is exactly one frame.
- Adjust Image Quality, Resolution, and Colors (Optional): Use Image quality (%) and the Image resolution presets (or Keep original / Width x Height) to control sharpness and pixel size. Leave Colors on ORIGINAL for full fidelity, or switch to By Color Reduction + Dither to shrink the file.
- Convert and Download: Click Convert. The slides are rendered, packed into an APNG, and optimized, then your file is ready. No sign-up, no watermark.
APNG vs GIF vs Static PNG for Slides
| Property | APNG (animated) | GIF (animated) | PNG (static, one file per slide) |
|---|---|---|---|
| Plays as a loop | Yes | Yes | No — separate images |
| Color depth | 24-bit (16.7M colors) | 256 colors per frame | 24-bit |
| Photo/gradient slides | No banding | Posterizes | No banding |
| Transparency | Full 8-bit alpha | 1-bit (on/off) | Full 8-bit alpha |
| Frame compression | Lossless | Lossless (palette) | Lossless |
| Typical file size | Larger than GIF | Smaller, but banded | N/A (per-slide) |
| Old-viewer fallback | Shows first slide as static PNG | Universally shown | Always shown |
| Best for | A crisp looping deck preview with photo-quality slides | Maximum compatibility, flat text decks | Keeping each slide sharp and separate |
For maximum compatibility prefer PPTX to GIF; to keep each slide as its own sharp, separate image, use PPTX to PNG.
Frequently Asked Questions
How many frames does the APNG have?
One frame per slide. A 20-slide deck produces a 20-frame looping APNG. The Framerate setting (10 FPS by default) controls how quickly the loop cycles through those frames, not how many frames there are.
Can I make each slide stay on screen longer?
Yes — lower the Framerate. Because each slide is exactly one frame, reducing the frames-per-second increases how long each slide is displayed before the loop advances to the next slide. In our testing, a 10-slide deck at 2 FPS holds each slide for roughly half a second per cycle, while the default 10 FPS flips through them quickly.
Does this keep my PowerPoint animations and transitions?
No. Online slide-to-APNG rendering captures the final look of each slide and assembles those frames into a loop, so build animations, transitions, and per-slide timings are flattened into one frame per slide. If you need those preserved, PowerPoint's own File → Export → Create an Animated GIF keeps animations and timings, but it outputs GIF rather than APNG.
Will the APNG play in every browser?
It renders natively in Chrome 59+, Edge 79+, Firefox 3+, and Safari 8+ — about 94.7% of browsers worldwide per caniuse. Anything that doesn't understand the animation simply shows the first slide as a normal static PNG, so it degrades gracefully rather than breaking; that first-frame fallback is part of the APNG spec.
Is my uploaded PPTX kept private?
Your file is uploaded over a TLS-encrypted connection, converted on our servers, and automatically deleted after a few hours. There is no sign-up, no watermark, and your files are never shared or made public.