AVIF Image is not supported by Obsidian,
Please add support for it,
I checked that Obsidian can display both WEBP and AVIF image formats but doesn’t support it.
There are some big things Obsidian doesn’t has,
→ Inline Editing
→ img HTML5 Tag support for relative URLs
→ audio HTML5 Tag support
→ WEBP/AVIF Image formats Support
→ Ability to configure which folders to Ignore inside Vault