this post was submitted on 24 Feb 2026
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Ostia... on my mobile this file was a webp, after uploading here it has been changed to apng... maybe it's a apng with the extension changed, because the size is exactly the same, so doesn't seem a conversion... thanks!
the file likely have .webp extension in your device, but extensions are meaningless, you can rename any file to .webp but that doesn't make it a webp, the file was named with .webp extension but in reality it was an animated png, when you uploaded it here probably this site figured out the mime-type and changed the extension of the uploaded file accordingly 😁
The extension change happens when i download the file from signal stickers site, it's detected as webp file despite being an animated png, I've download several stickers and it's a common problem. I can convert it with imagemagick but then increase the size of the file