X (Twitter) Image & Video
Size Guide 2026
Optimize your posts for the timeline with perfect aspect ratios, file sizes, and high-performance formats.
Quick Reference Formats
analytics Technical Specifications & Limits
| Feature | Standard Users | X Premium Users |
|---|---|---|
| Max File Size (Images) | 5MB | 5MB |
| Max File Size (Video) | 512MB | Up to 16GB |
| Max Video Duration | 2m 20s | Up to 4 Hours |
| Supported Formats | JPG, PNG, GIF, MP4, MOV | JPG, PNG, GIF, MP4, MOV |
| Max GIF Size | 5 MB (mobile) / 15 MB (web) | 5 MB (mobile) / 15 MB (web) |
Timeline Auto-Crop Mastery
X crops images differently depending on whether they are viewed in the main timeline or clicked to expand. Understanding the "Safe Zone" is critical for engagement.
- check_circleKeep your subject in the center 50% of the image.
- check_circleVertical images (4:5) are now supported but will be cropped to 1:1 on some mobile views.
- warningAvoid putting text near the very top or bottom edges.
Best Practices for X
Center the Action
Ensure the most important part of your photo is dead-center to survive the automated timeline cropping.
Use High-Quality JPGs
While PNGs are supported, high-bitrate JPGs often perform better after X's aggressive compression.
Engage with GIFs
GIFs up to 15MB (web) or 5MB (mobile) are supported. Use them for quick tutorials or reactions to increase shareability.
Premium Benefits
Premium users can upload 1080p video up to 4 hours long (720p for 2–4hr videos), with up to 16GB file size.
Make your posts stand out on X
Stop guessing sizes. Use our pro tools to perfectly format your content in seconds.