No. The check runs in your browser; the file never leaves your device.

Which sizes are best?

9:16 at 1080 × 1920 for Reels, Stories and TikTok; 4:5 at 1080 × 1350 for the feed.

Does your creative fit the placement?

A 1:1 video in Reels gets letterboxed, a 1080 × 1080 image in Stories gets cropped. Check before you upload.

Drop an image or video – it stays on your device

Pick a file to see which placements it fits – ratio, resolution and length are checked against current Meta and TikTok specs.

Is my file uploaded?: No. The check runs in your browser; the file never leaves your device.
Which sizes are best?: 9:16 at 1080 × 1920 for Reels, Stories and TikTok; 4:5 at 1080 × 1350 for the feed.

Export 9:16, 4:5 and 1:1 from the same edit – no re-render needed.

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