APNG Image — A .apng file is a APNG Image. It is a raster or vector image format used for photos, web assets and design work.
Quick facts
What is .apng
A .apng file is a APNG Image. It is a raster or vector image format used for photos, web assets and design work.
In the mime-db registry it maps to image/apng, and it is marked as non-compressible. When serving .apng over HTTP, set the Content-Type header as shown in Developer info below.
Related entities: it maps to image/apng — and is delivered over HTTP via the Content-Type header.
How to open .apng files
Developer info
When served over HTTP, responses should set the following header:
Content-Type: image/apng
Common software that reads/writes .apng:
Relation chain
Related extensions
Related MIME types
Common uses
How to edit .apng files
How to create .apng files
Frequently asked questions
Common options include Photoshop, GIMP, Paint. You can also open many of these files with built-in viewers or a browser.
Create a new file in any text editor or the app that owns the format and save it with the .apng extension.
image/apng is the media type identifier used for .apng files during network transfer (for example in the HTTP Content-Type header).
Sources & standards
Updated 2026-08-18
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