I have a 3D NFT I want to mint on my own Manifold contract. Loved the experience shoutouts to your devs!
I was pretty heart-broken when I discovered I could not upload a .webp image file as the thumbnail. Hoping this is just a minor bug where the file-input-box just needs webp to be added to the allowed file-types.
.webp is an image file format that has been widely supported by all operating systems and all web-browsers (both mobile+desktop) for a long time now. It was designed to assist with faster loads of images on the web. Ideally I want my NFT thumbnail to load fast across all of the major platforms and thus be great if I can use webp for my token thumbnail.
UPDATE: So it does appear to be minor bug where .webp simply can be added to the accepted formats on thumbnail image file-input-box (Single token mint to wallet). I inspect-element added “webp” as an acceptable file-format for thumbnail and was able to mint my NFT as desired through manifold.
Nice if a dev at Manifold can add a one line fix to allow all users the ability to use webp thumbnails on their NFTs. Rest assured many NFTs use webp as their primary-image or thumbnail-image file-type and support for these NFTs is universal across all platforms.
All love to the team at Manifold 
Link to my NFT for reference (goto my profile page to see webp thumbnail). https://opensea.io/assets/ethereum/0x40e85735ff7c7230177589b4e52295b899ccc23e/1
Should be supported now. Thanks for bringing this to our attention.
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