Why aspect ratios matter in 2025
Right-size creative loads faster, fills the native canvas, and avoids black bars or awkward auto-cropping. Getting ratios right improves watch time, CTR, and ad delivery consistency—especially on mobile-first feeds.
Quick reference table (2025)
Platform | Feed / All-purpose | Vertical video | Landscape / Link | Notes |
---|---|---|---|---|
4:5 (1080×1350); also 1:1 and 3:4 | 9:16 (1080×1920) Reels/Stories | 1.91:1 (1080×566) | 2025: native 3:4 photos supported | |
4:5 (1440×1800) or 1:1 (1080×1080) | 9:16 (1080×1920) Reels/Stories | 1.91:1 link (1200×628/630) | 4:5 often best in Feed | |
X (Twitter) | 1:1 (1200×1200) | — | 1.91:1 (1200×628) | Ad spec: 1:1 or 1.91:1 |
1:1; 4:5 supported | 4:5 vertical video supported | 1.91:1 link (1200×627) | Ads allow 1.91:1, 1:1, 2:3, 4:5 | |
TikTok | — | 9:16 (≥1080×1920) | 1:1 or 16:9 accepted | Up to 10-min for ads |
YouTube | — | Shorts 9:16 (1080×1920) | Thumbs 16:9 (1280×720) | Shorts length up to 3 min |
2:3 (1000×1500) | Idea Pins 9:16 | — | Taller than 2:3 may be cut | |
Snapchat | — | 9:16 (1080×1920) | — | Ads 3–180 s |
Threads | 1:1, 4:5, 9:16 (mobile-first) | 9:16 | Link preview 2:1 (≈1200×600) | Profile 1:1 (320×320) |
- Photos (feed): 1:1 (1080×1080), 4:5 (1080×1350), 3:4 supported in 2025; landscape 1.91:1 (1080×566).
- Reels & Stories: 9:16 (1080×1920). Reels accept uploads between 1.91:1 and 9:16.
Tip: Use 4:5 for maximum on-screen real estate in feed. Keep captions, logos and CTAs away from top/bottom Story UI overlays.
- Feed images: 4:5 (1440×1800) recommended or 1:1 (1080×1080).
- Stories/Reels: 9:16 (1080×1920).
- Link shares: 1.91:1 (≈1200×628/630).
Tip: Prefer 4:5 in Feed for visibility; switch to 1:1 if cross-posting broadly.
X (Twitter)
- Images: 1:1 (1200×1200) or 1.91:1 (1200×628) align with current ad/creative specs.
- Practical note: Cropping varies by device—center key content.
- Organic feed: 1:1 safest; 4:5 supported for vertical posts.
- Link previews: 1.91:1 (≈1200×627).
- Ads: 1.91:1, 1:1, 2:3, 4:5. To avoid borders on vertical, 4:5 is recommended.
TikTok
- Recommended: 9:16 (≥1080×1920). Square (1:1) and landscape (16:9) are accepted but not ideal.
- Ads: up to 10 minutes; keep captions and elements away from UI areas.
YouTube (Shorts & thumbnails)
- Shorts: vertical 9:16; Shorts length up to 3 minutes.
- Thumbnails: 16:9 at 1280×720 (≤2 MB), JPG/PNG/GIF.
Pro tip: Keep faces and big text within the central square so it survives different crops.
- Standard Pins: 2:3 (1000×1500) recommended; taller than 2:3 may be cut off in feed.
- Idea/Story Pins: 9:16.
Snapchat
- Single image/video ads: 9:16 (1080×1920). Typical length 3–180 s.
- Safe zone: Avoid placing logos/text in top/bottom UI areas to prevent overlap.
Threads
- Posts: 1:1, 4:5, and 9:16 work well on mobile-first feeds.
- Link previews: 2:1 (≈1200×600).
- Profile: 1:1 (320×320 or larger).
Pro workflow: one master file → all crops
- Design once at 9:16 (1080×1920). Place the key subject in the center.
- Frame safe zones: Ensure the central 4:5 area is clean for Instagram/Facebook feed. Keep a centered square (1:1) inside that.
- Export crops:
- Feed portrait: 4:5 (1080×1350)
- Square: 1:1 (1080×1080)
- Landscape/link: 1.91:1 (1200×628 or 1080×566)
- Short-form video: keep the original 9:16
Aspect ratio math (quick formulas)
/* Given a target ratio W:H */
height = round(width * H / W)
width = round(height * W / H)
Responsive CSS helpers
.ar-169 { aspect-ratio: 16 / 9; width: 100%; height: auto; }
.ar-45 { aspect-ratio: 4 / 5; width: 100%; height: auto; }
.ar-11 { aspect-ratio: 1 / 1; width: 100%; height: auto; }
.ar-916 { aspect-ratio: 9 / 16; width: 100%; height: auto; }
Next step: Link to your aspect ratio calculator for instant pixel conversions and smart cropping presets.
FAQs
What’s the single safest ratio for cross-posting?
1:1 is the most portable. For extra feed visibility on Instagram/Facebook, use 4:5. For Shorts/Reels/TikTok, stick to 9:16.
Did Instagram change anything for photos in 2025?
Yes—Instagram now supports 3:4 photos (in addition to 1:1 and 4:5), while Reels remain best at 9:16.
What’s the correct YouTube thumbnail size?
1280×720 (16:9), up to 2 MB, JPG/PNG/GIF. Keep text large, high contrast.
Why does my Pinterest Pin get cut off?
Pins taller than 2:3 can be truncated in feed. Keep standard image Pins at 1000×1500 (2:3).
How can I avoid Story/Reel UI overlaps?
Keep logos/CTAs away from top/bottom edges. Design with generous margins so stickers, captions, and buttons don’t cover key content.