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APNG file format support for RMVXA etc.

BMM Archive · July 15, 2026

Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

  • Original title: APNG file format support for RMVXA etc.
  • Original author: Spoopy
  • Original date: December 26, 2016
  • Source thread: https://forums.rpgmakerweb.com/threads/apng-file-format-support-for-rmvxa-etc.72695/
  • Source forum path: Game Development Engines > Ruby Game System (RGSS) Scripts > RGSS3 Scripts (RMVX Ace) > RGSS3 Script Requests

Summary

Hi Guys. I'm new to the RM community. There is a "newish" file format called APNG, an animated version of PNG. Not many applications have support for it, I know GIMP has a plugin for it. So I was thinking that this could be useful for portraits, battle animations and sprite sheets in general. One sprite sheet could contain multiple animations on different frames.

Archived First Post

Hi Guys. I'm new to the RM community. There is a "newish" file format called APNG, an animated version of PNG.


Not many applications have support for it, I know GIMP has a plugin for it.


So I was thinking that this could be useful for portraits, battle animations and sprite sheets in general.


One sprite sheet could contain multiple animations on different frames.


The idea is to have a script run between frame numbers depending on an event, resulting in more fluid animations and also allowing for more variation.


It's just an idea which could lead to some interesting effects, more engaging dialogue and battles. Such a feature would be great across all versions of RM.


Some web browsers have also started to implement support for the format, so it should work for MV users in the future.


Links for devs interested.


Wikipedia link


Mozilla APNG specifications


APNGgasm project GITHUB


Structure of APNG in Ruby(Japanese - use Google Translate?)


Looking forward to reading the communities thoughts on this.

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