When minting an NFT on Mintable, your preview image and media files are what make your item stand out — so it’s important to understand the supported formats and requirements before uploading.
Minimum size: 800px × 800px
Recommended: Use high-resolution images larger than 800px × 800px for best results on listings and collection pages
Supported formats: JPG, PNG, GIF, WEBP
Mintable also supports interactive 3D files and video files as part of your NFT preview.
.GLB (3D File)
Allows users to interact with a 3D model directly in the browser
.MP4 (Video)
Lets users watch a video preview in the NFT’s item page
⚠️ Important: You must still upload a basic image (JPG/PNG/etc.) to serve as the default display image, even if you're including an MP4 or GLB file.
Avoid special characters in file names. The following will prevent your file from uploading:
Symbols like: $ % * & # @ ( ) [ ]
Non-English characters, including accented or non-Latin scripts
✅ Stick to letters, numbers, underscores, or hyphens in file names to ensure successful uploads.
If your file won’t upload, try the following troubleshooting steps:
Check your file name – remove any special characters
Disable all browser extensions except MetaMask
Close all Mintable tabs, refresh your browser, and try uploading again
Ensure your file meets size and format requirements
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