Photos
- JPEG is the safest format on every platform. If a photo post fails, the first thing to try is re-exporting as JPEG.
- PNG, WebP, and GIF are accepted for upload, but Instagram in particular can reject non-JPEG containers.
- Instagram takes up to 20 photos per post as a carousel. TikTok takes up to 35.
- Threads takes up to 20 photos as a carousel. Do not mix photos and a video there: only the first photo goes out.
- Facebook takes up to 10 photos in one post.
Video
- MP4 (H.264) is the safest container; MOV and WebM are also accepted.
- Vertical 9:16 (e.g. 1080×1920) is what Reels, TikTok, and YouTube Shorts expect. Horizontal video won't appear in the Shorts feed.
- YouTube Shorts: up to 3 minutes, vertical or square.
- TikTok shows your account's maximum video duration in the compose screen.
- One video per post.
Stories
- Stories publish on Instagram.
- One image or one video up to 60 seconds.
- No caption.
Size and storage
- Photos upload up to 50 MB; videos upload directly to storage with no practical size cap.
- Space: 1 GB per account on Free. The paid plans share theirs: 25 GB on Creator up to 500 GB on Agency. It holds the files for your queued posts.
- We delete each original 48 hours after it posts, on every plan. See How long does sprkly keep my photos and videos?