Social Media Image Size Guide
Why Image Size Matters on Social Media
Every social media platform has specific recommended image dimensions. Using the wrong size leads to awkward cropping, blurry displays, or important content being cut off. On the other hand, correctly sized images look professional, load faster, and get better engagement.
Social media algorithms also tend to favor properly formatted content. Images that fit the platform’s native dimensions display better in feeds and are more likely to capture attention.
Instagram Image Sizes
| Content Type | Dimensions (px) | Aspect Ratio |
|---|---|---|
| Square Post | 1080 × 1080 | 1:1 |
| Portrait Post | 1080 × 1350 | 4:5 |
| Landscape Post | 1080 × 566 | 1.91:1 |
| Story | 1080 × 1920 | 9:16 |
| Reel Cover | 1080 × 1920 | 9:16 |
| Profile Photo | 320 × 320 | 1:1 |
Instagram will crop images that do not match these ratios. For best results, always resize your photos to the exact dimensions before uploading.
Facebook Image Sizes
| Content Type | Dimensions (px) | Aspect Ratio |
|---|---|---|
| Shared Post | 1200 × 630 | 1.91:1 |
| Cover Photo | 820 × 312 | 2.7:1 |
| Profile Photo | 170 × 170 | 1:1 |
| Event Image | 1200 × 628 | 1.91:1 |
| Group Cover | 1640 × 856 | 1.91:1 |
Facebook compresses uploaded images aggressively. Using the recommended dimensions and saving at high quality (85-90% JPEG) helps maintain clarity after Facebook’s additional compression.
Twitter/X Image Sizes
| Content Type | Dimensions (px) | Aspect Ratio |
|---|---|---|
| Post Image | 1200 × 675 | 16:9 |
| Header | 1500 × 500 | 3:1 |
| Profile Photo | 400 × 400 | 1:1 |
| Card Image | 800 × 418 | 1.91:1 |
Twitter crops images in the feed. The visible area depends on the user’s device and display settings. Keep important content centered to avoid cropping issues.
WeChat Image Sizes
| Content Type | Dimensions (px) | Notes |
|---|---|---|
| Avatar | 200 × 200 | Displayed as a circle |
| Moment Post | 1080 × 1080 | Square works best |
| Official Account Cover | 900 × 383 | Fixed ratio required |
| Mini Program Share | 500 × 400 | 5:4 ratio |
WeChat is particularly strict about cover image dimensions for Official Accounts. Images that do not match the 900 × 383 ratio will be cropped unpredictably.
Xiaohongshu (Little Red Book) Image Sizes
| Content Type | Dimensions (px) | Aspect Ratio |
|---|---|---|
| Post Image | 1080 × 1440 | 3:4 |
| Profile Photo | 400 × 400 | 1:1 |
Xiaohongshu favors portrait-oriented images. The 3:4 ratio gets the most screen real estate in the feed and tends to perform best for engagement.
How to Quickly Resize Images for Social Media
Instead of manually calculating dimensions and resizing each image, use PicKit’s resize tool with its built-in social media presets:
- Open the resize image tool
- Upload your photo
- Select the social media platform and content type from the presets
- The tool automatically sets the correct dimensions
- Download your perfectly sized image
The presets cover all the major platforms listed above, so you never have to memorize dimensions.
Tips for Better Social Media Images
- Always start with the highest quality source: You can always reduce quality, but you cannot add detail that was not captured.
- Keep text away from edges: Platforms crop differently across devices. Leave a 10% margin around important content.
- Use consistent sizing: If you are posting a series, use the same dimensions for a cohesive look.
- Optimize file size: Large images load slowly on mobile. Compress your images to under 500KB for fast loading without visible quality loss.
- Test on multiple devices: What looks great on desktop may be cropped differently on mobile. Preview your posts on both.
- Batch process when needed: Creating content for multiple platforms? Use batch processing to resize the same image for different platforms at once.