Why Image Dimensions Matter on Social Media
Social media platforms display images at specific dimensions. If your image doesn't match these dimensions, the platform will crop or scale it automatically — often cutting off important parts of your photo or making it look blurry.
Uploading at the correct dimensions also reduces the amount of compression the platform applies. Instagram, Facebook, and Twitter all recompress uploaded images. Starting at the right size means less aggressive recompression and better final quality.
Complete Social Media Image Size Chart 2026
Use these exact dimensions for the best results on each platform:
| Platform & Format | Dimensions | Aspect Ratio | Max File Size |
|---|---|---|---|
| Instagram — Square Post | 1080 × 1080px | 1:1 | 8MB |
| Instagram — Portrait Post | 1080 × 1350px | 4:5 | 8MB |
| Instagram — Story / Reel | 1080 × 1920px | 9:16 | 8MB |
| Facebook — Post Image | 1200 × 630px | 1.91:1 | 4MB |
| Facebook — Cover Photo | 820 × 312px | 2.63:1 | 4MB |
| Twitter / X — Post Image | 1200 × 675px | 16:9 | 5MB |
| Twitter / X — Header | 1500 × 500px | 3:1 | 5MB |
| LinkedIn — Post Image | 1200 × 627px | 1.91:1 | 5MB |
| LinkedIn — Banner | 1584 × 396px | 4:1 | 8MB |
| YouTube — Thumbnail | 1280 × 720px | 16:9 | 2MB |
| TikTok — Profile Picture | 200 × 200px | 1:1 | 2MB |
| Pinterest — Standard Pin | 1000 × 1500px | 2:3 | 32MB |
Platform-Specific Tips
Instagram: Portrait posts (1080×1350px) take up more screen real estate in the feed, leading to higher engagement. Use this format for important posts.
Facebook: The 1200×630px format is used for both regular posts and link previews. Using this size ensures your images look great in both contexts.
Twitter/X: Images in tweets display at 16:9 ratio. If you upload a square image, Twitter will crop it — use 1200×675px to avoid unexpected cropping.
LinkedIn: Professional content performs best. Use high-quality images at 1200×627px for posts. For articles, use 1200×644px for the cover image.
YouTube: Thumbnails are critical for click-through rates. Use 1280×720px with bold text and high contrast. Keep important elements away from the edges.
Compress After Resizing for Best Results
After resizing to the correct dimensions, compress your image before uploading. Social media platforms apply their own compression, but starting with a pre-compressed image gives you better control over final quality. Use the PixelTools Image Compressor at 85% quality for social media images — this reduces file size by 50% while maintaining excellent visual quality.