Does flipping an animated PNG break the animation?

No. Each frame is decoded, mirrored along the chosen axis, and re-encoded back into the APNG stream with its original fcTL control chunk intact. The per-frame delays and the acTL loop count (a finite number or infinite) carry through unchanged, so the flipped APNG plays at the same speed and loops the same number of times as the source. It does not collapse to a static first frame.

Will I lose transparency or quality flipping an APNG?

No on both counts. APNG is lossless and carries a full 8-bit alpha channel, so a flip is a pure pixel rearrangement — no resampling and no recompression artifacts. Semi-transparent edges, soft shadows, and anti-aliased outlines are mirrored exactly, unlike GIF, which only supports 1-bit on/off transparency. In our testing, a flipped APNG re-encodes to within a percent or two of the source file size, because the same pixels are simply reordered before DEFLATE.

What's the difference between flipping and rotating an APNG?

Flipping mirrors the image across an axis — horizontal swaps left and right, vertical swaps top and bottom — and is its own inverse. Rotating turns the image by an angle. A 180° rotation looks pixel-identical to applying both a horizontal and a vertical flip, but a 90° or 270° turn can't be reproduced by any combination of flips. For angle-based turns that keep the animation, use Rotate Image, or for static frames see Flip PNG.

Do unsupported browsers still show my flipped APNG?

Yes, as a still image. APNG is supported by roughly 94.7% of browsers globally — Chrome 59+, Firefox 3+, Safari 8+, Edge 79+, and Opera 46+ all animate it natively. Browsers that don't support APNG (such as Internet Explorer and Opera Mini) fall back to displaying only the first frame, which is itself a valid PNG, so your flipped file never appears broken.

Are my uploads sent to a server or kept private?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. No account is required, there are no watermarks, and the file is never shared or made public. If you only need a static mirrored frame instead of the full animation, Flip PNG handles single-frame images.

Flip APNG Online

Flip your APNG image online to mirror it and export as APNG for easy sharing and reuse.

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