.apngTypical support level 4

APNG Frame-by-Frame Animation Viewer

Pause APNG animations, inspect transparent frames and change playback speed in supported browsers. Free, with no uploads, signup or software installation.

Choose a .apng file

Your file stays on this device

Choose a file to view it in your browser. No signup or software installation needed. Your file stays on your device and is never uploaded.

Pause, inspect frames and change animation speed

Choose a local image from Files on your phone or computer. Pause, inspect the previous or next frame, then play to continue. Choose 0.25×–4× speed for slow or fast playback. Zoom, rotate and fit remain available. Controls require frame decoding support for the format; other browsers show a native preview with an explanation.

Download the original APNG sample

You can also click Samples beside Open folder, then choose a file from the Animation samples folder. These original gradient images were generated by Anyfile for trying the viewer.

What Anyfile can show

Play/pause, frame-by-frame viewing and 0.25×–4× playback speed when supported
Frame counts, decoded frame timing and loop information
Animated frames with alpha transparency
The browser-decoded image at its intrinsic size

Limits and conditions

Frame controls require ImageDecoder support for this format; otherwise native preview is used
Controlled animation: 128 MiB input, 8192 pixels per edge, 16 Mi pixels per frame and 64 Mi pixels across all frames
Frame timing and blending depend on the browser decoder
The viewer does not extract or edit individual frames

IMPLEMENTATION

Viewers responsible for this format

APNG extends PNG with animation control and frame data while retaining PNG-compatible chunks. Anyfile verifies that the browser can decode the selected image before displaying its animation.

Browser image viewer

Browser image viewer: explore supported file formats, viewing limits and open-source credits. Your files are never uploaded.

See implementation and open-source credits

Common question

Can I pause an APNG and inspect its transparent frames?

Yes, in a supported browser. Pause, step backward or forward and use the checkerboard background to inspect transparency. The viewer keeps the decoded blending and disposal behavior and offers 0.25×–4× playback.

What happens if APNG is opened by an older PNG-only tool?

The format is designed so a PNG-only decoder can often show the default image while ignoring animation chunks.