Supported Formats
Formats accepted for uploads and attachments, grouped by media type. Individual uploads are capped at 64 MB — larger files return 413 Payload Too Large. Unsupported MIME types return 415 Unsupported Media Type.
Image formats
| MIME type |
Extension |
| image/jpeg |
.jpg .jpeg |
| image/png |
.png |
| image/gif |
.gif |
| image/webp |
.webp |
| image/avif |
.avif |
| image/heif |
.heif |
| image/heic |
.heic |
| image/jxl |
.jxl |
| image/bmp |
.bmp |
| image/tiff |
.tif .tiff |
| image/vnd.adobe.photoshop |
.psd |
| image/svg+xml |
.svg |
Text formats
| MIME type |
Extension |
| text/plain |
.txt |
| text/markdown |
.md |
Document formats
| MIME type |
Extension |
| application/pdf |
.pdf |
Audio formats
API only
Audio uploads are accepted by the API and stored on the object, but the mymind app doesn't play or preview them yet. They'll appear as plain attachments until audio UI ships.
| MIME type |
Extension |
| audio/mpeg |
.mp3 |
| audio/mp4 |
.m4a |
| audio/aac |
.aac |
| audio/wav |
.wav |
| audio/flac |
.flac |
| audio/ogg |
.oga .ogg |
| audio/opus |
.opus |
| audio/aiff |
.aif .aiff |
| audio/x-ms-wma |
.wma |
Video formats Mastermind
Video uploads require a Mastermind plan.
| MIME type |
Extension |
| video/mp4 |
.mp4 |
| video/quicktime |
.mov |
| video/webm |
.webm |
| video/x-msvideo |
.avi |
| video/matroska |
.mkv |