Upload off-spec and Instagram crops or compresses it for you. Resize first and you stay in control.
Instagram cheat sheet
- Square: 1080 × 1080
- Portrait: 1080 × 1350
- Stories/Reels: 1080 × 1920
- Profile: 320 × 320
Keep the aspect ratio
Lock the ratio so nothing stretches — enter one dimension and the other is computed. The "Maintain aspect ratio" toggle in the converter does this for you.