How to resize an image for Twitter header
- Select Choose files and pick your photo, or drop it on the box.
- The tool fills a 1500×500 frame and trims equally from the longer side, so the middle of your photo stays. The file keeps the format of your original.
- Select Download and upload the result.
About the 1500×500 size
The header on a Twitter or X profile is a 3 to 1 banner, commonly published as 1500×500 pixels at the time of writing. The name of the platform has changed, but the header size guidance has stayed close to this for years.
1500×500 is a 3:1 landscape frame (width divided by height is 3) with 750,000 pixels, or 0.75 megapixels. A 3:1 strip keeps only a third of the height of a square photo. Wide, simple scenes work best, and the profile picture overlaps the lower left corner.
What happens to your photo
The table shows how common source images are treated when the tool fills 1500×500.
| Source | Scaling | Part of the picture kept |
|---|---|---|
| 4000×3000 phone photo | reduced to 38 percent | 44 percent |
| 3024×4032 portrait photo | reduced to 50 percent | 25 percent |
| 1920×1080 screenshot | reduced to 78 percent | 59 percent |
| 1080×1080 square | enlarged 1.39× | 33 percent |
Sources smaller than the frame are enlarged because the output size is fixed, which can look soft. Platforms change their guidance over time, so check Twitter header requirements before you publish.
Tips
- Keep important content out of the lower left, where the profile picture sits.
- High contrast, simple images survive the cropping that phones apply.
- Use a source at least 1500 pixels wide to avoid enlarging.
- See also: resize for Facebook cover, resize for LinkedIn banner, resize for YouTube banner, crop tool.
Your photos stay on your device. Nothing is uploaded, and there is no sign-up.