Aspect Ratios for Every Platform: A 2026 Cheat Sheet

Designing one piece of content and exporting it unchanged to every platform is the single most common cause of bad crops. Each platform optimizes its feed and grid for a different shape, and ignoring that means your subject ends up half cut off somewhere.

Square (1:1) — the safe default

Still a reliable choice for Instagram feed posts and a reasonable fallback when you're posting the same image across multiple platforms without time to create separate crops. It rarely looks wrong, even if it's not optimal anywhere specific.

Vertical (9:16) — the format that now dominates discovery

Instagram Reels, TikTok, YouTube Shorts, and Stories all use full-screen vertical video. This is the format most likely to get algorithmic push right now — content shot or cropped to fit any other ratio loses the top and bottom of the frame when forced into these placements.

Horizontal (16:9) — for long-form video

Standard YouTube uploads and most desktop video contexts still expect 16:9. A vertical video uploaded as a standard YouTube video gets pillarboxed with black bars on either side, which looks unfinished on a platform where production quality is part of the judgment.

Portrait (4:5) — Instagram's actual sweet spot

Instagram's feed gives portrait images more vertical screen real estate than square ones, meaning a 4:5 crop occupies more of the screen and tends to get more attention without needing different content — same image, more visible space.

Plan the ratio before you shoot or design

Deciding the target platform and ratio before creating content — not after — means framing important elements (faces, text, key details) inside the safe zone for whichever ratio you'll actually need, instead of fixing a bad crop after the fact.