X (Twitter) Image Size and Specs 2026
Every upload spec at a glance, with sources.
X (Twitter) Image 2026: aspect ratio 16:9, 1:1, 4:5, 2:3, 1.91:1, 9:16, recommended 1080x1080 (1:1) or 1920x1080 (16:9), files up to 5 MB, caption up to 280 characters.
All specs
| Aspect ratio | 16:9, 1:1, 4:5, 2:3, 1.91:1, 9:16 |
|---|---|
| Recommended resolution | 1080x1080 (1:1) or 1920x1080 (16:9) |
| Maximum file size | 5 MB |
| File types | JPEG, PNG, GIF |
| Caption limit | 280 characters |
Notes (from the sources, in English): Up to 4 photos per post. Photos up to 5 MB; animated GIFs up to 5 MB on mobile and 15 MB on web. BMP and TIFF not accepted (API docs also list WEBP). Single photos between 2:1 and 3:4 display in full. Attachments do not count toward the character limit. Recommended sizes are from X Ads specs.
Work out bitrate and file size with the file size calculator. Check caption length with the character counter.
Changes in 2025 and 2026
- No dated 2025/2026 spec change confirmed. Current Help Center: Premium uploads up to 4 hours / 16 GB, non-Premium 140 s / 512 MB.
Sources
- How to post photos or GIFs on X (X Help Center) (official)
- How to Post (X Help Center) (official)
- X Ads creative specs (X Business) (official)
- Media best practices (X API docs) (official)
Checked: 2026-10-13. Confidence: official. All platforms in one table: social media video specs 2026
Other X (Twitter) formats
FAQ
What size is a X (Twitter) Image?
The recommended size is 1080x1080 (1:1) or 1920x1080 (16:9) with an aspect ratio of 16:9, 1:1, 4:5, 2:3, 1.91:1, 9:16.
What is the maximum file size for a X (Twitter) Image?
Up to 5 MB.
How long can the caption of a X (Twitter) Image be?
Up to 280 characters.