Does rotating an APNG preserve the animation, frame timing, and loop count?

Yes. APNG stores per-frame timing in fcTL (frame control) chunks and the loop count in the acTL (animation control) chunk. Every frame is rotated by the same angle and all of those control chunks are carried across unchanged, so the rotated file plays the same animation at the same speed with the same loop behavior. A perma-looping APNG (loop count 0) stays perma-looping after rotation.

Will I lose quality or transparency when I rotate an animated PNG?

For 90, 180, and 270 degrees, no. APNG is lossless and those orthogonal rotations only remap pixel coordinates — no resampling, no recompression artifacts, and the full 8-bit alpha channel is preserved exactly. In our testing, a 480x270 APNG rotated 90 degrees decoded to pixel-identical frames (just transposed). Only custom non-orthogonal angles resample edge pixels, and even then APNG's true alpha keeps the new corner regions cleanly transparent instead of filling them with a background color.

Should I rotate or flip my APNG?

Rotation turns the whole frame around its center (90/180/270 or a custom angle); flipping mirrors it left-to-right or top-to-bottom, which produces a different result (text and asymmetric shapes reverse). If you want a mirror image rather than a turn, use Flip APNG instead. To turn a sideways recording upright, rotation is what you want.

Will my rotated APNG still display everywhere?

APNG is supported in Chrome 59+, Firefox 3+, Safari 8+, and Edge 79+, which is roughly 94.7% of global browsers per caniuse. Rotation does not change compatibility — a rotated APNG plays exactly where the original would. In browsers or apps that do not support APNG, both the original and the rotated file fall back to showing only the first frame as a static PNG.

My rotated APNG is large — how do I shrink it for chat or upload?

APNG is lossless and uncompressed frame-to-frame, so even a short clip can be several megabytes, and rotation does not reduce that. To shrink it, lower the Color Palette, drop the Framerate, or scale resolution down during the rotate step, or run the result through Compress APNG afterward. If you do not need the alpha channel, converting to APNG to GIF or to MP4/WebM via a video encoder will usually cut the size dramatically through temporal compression.

Rotate APNG Online

Rotate your APNG (animated PNG) image and save the result as an APNG file—perfect for fixing orientation while keeping animation.

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