X moves fast—design for tiny previews. Keep profile images centered, and place header essentials in the middle third. In-stream 16:9 crops cleanly. Use high contrast, minimal text, and export sharp JPG/PNG; MP4 (H.264) for video.
Best Practices
Center subjects for circular profile crops.
Keep header essentials in the central band.
Prefer 16:9 for predictable crops in-stream.
Use bold, high-contrast type; avoid fine details.
Export JPEG/PNG for images; MP4 H.264 for video.
Pro Tips
Design with dark mode in mind—test contrast.
Use simple, repeatable templates for threads.
Minimize on-image text; push detail to the tweet.
Pick OG images that summarize the link at a glance.
Avoid busy backgrounds that reduce legibility.
Visual Previews
Profile Photo
1:1 · Image
400 x 400 px
Preview shows relative aspect only. Export at the listed resolution for best quality.
Header Photo
3:1 · Image
1500 x 500 px
Preview shows relative aspect only. Export at the listed resolution for best quality.
In-Stream Image
16:9 · Image
1600 x 900 px
Preview shows relative aspect only. Export at the listed resolution for best quality.
Sizes
Profile Photo
Dimensions:
400 x 400 px
Aspect Ratio:
1:1
Format:
Image
Header Photo
Dimensions:
1500 x 500 px
Aspect Ratio:
3:1
Format:
Image
In-Stream Image
Dimensions:
1600 x 900 px
Aspect Ratio:
16:9
Format:
Image
Type
Dimensions
Aspect Ratio
Format
Profile Photo
400 x 400 px
1:1
Image
Header Photo
1500 x 500 px
3:1
Image
In-Stream Image
1600 x 900 px
16:9
Image
FAQ
What image size works best in-stream on X?
16:9 around 1600×900 is reliable and previews cleanly across devices.
How do I avoid header cropping?
Place critical content (text/logos) in the center third of the 1500×500 header.
Why do images look washed out?
Compression and dark mode. Use high contrast and avoid thin lines/small type.
Profile Photo: 400 x 400 px • Header Photo: 1500 x 500 px • In-Stream Image: 1600 x 900 px
Center subjects for circular profile crops. • Keep header essentials in the central band. • Prefer 16:9 for predictable crops in-stream. • Use bold, high-contrast type; avoid fine details. • Export JPEG/PNG for images; MP4 H.264 for video.
Design with dark mode in mind—test contrast. • Use simple, repeatable templates for threads. • Minimize on-image text; push detail to the tweet. • Pick OG images that summarize the link at a glance. • Avoid busy backgrounds that reduce legibility.