Key takeaways
- X recommends a 400×400px profile photo and a 1500×500px header/cover photo.
- Platforms recompress and crop images after upload — sizing correctly upfront avoids an unwanted crop.
X image size by placement
- Profile photo: 400 × 400px, 2MB max file size
- Header/cover photo: 1500 × 500px
- In-post image: approximately 1200 × 675px (16:9) displays well in the timeline
Why header photos need extra-wide framing
X’s 1500×500 header is one of the widest aspect ratios among major platforms — keep key content centered, since it’s cropped differently across desktop and mobile.
image sizesreference
FAQ
- What size should an X profile photo be?
- 400×400px, with a 2MB maximum file size.
- What size should an X header/cover photo be?
- 1500×500px — one of the widest header formats among major platforms.
- What image size displays best in an X post?
- Approximately 1200×675px (16:9 aspect ratio) fits the timeline cleanly.