← Blogby Marcell Almeida

How to convert MNG to APNG online

Upload a legacy MNG animation and download a modern APNG — frames and timing preserved, no server upload.

MNG (Multiple-image Network Graphics) was designed as PNG's animated sibling, but no mainstream browser ever adopted it. APNG (Animated PNG) gives you the same lossless, alpha-friendly animation in Chrome, Firefox, Safari, and Edge. The MNG to APNG converter runs FFmpeg in your browser — the same approach used by server-side tools like ezgif.

Try it — upload an MNG file to convert

Open full tool →

How it works

  1. Upload — drop or select a .mng file (up to 200 MB).
  2. Convert — FFmpeg WASM decodes each frame and muxes them into APNG with original delays.
  3. Download — preview the animation in-browser and save the .apng file.

Why MNG → APNG?

MNG supports complex compositions (JNG layers, nested animations) but lacks practical support. APNG is a simpler animated PNG extension that browsers render natively and that falls back to the first frame in software that does not understand animation. Converting lets you publish legacy MNG assets on the web without re-authoring frames.

Limitations

First visit downloads ~25 MB of FFmpeg WASM (cached afterward). Very large MNG files are limited by browser memory. Complex MNG features (JNG sub-images, nested segments) may not translate perfectly — most MNG files are straightforward frame sequences and convert cleanly.

The MNG to APNG converter is free, runs locally, and never sends your data to a server. More format converter tools at maratool.com.