Resize Images for Twitter/X Posts — Free Online Tool
Create perfectly sized Twitter/X posts at 1600x900 pixels. Optimized for maximum timeline engagement.
Drop your images here
Drag files here or browse to upload
JPG, PNG, GIF, BMP, TIFFTwitter/X Image Sizes in 2026
| Format | Width | Height | Aspect Ratio |
|---|---|---|---|
| Tweet Image (Landscape) | 1600px | 900px | 16:9 |
| Tweet Image (Square) | 1200px | 1200px | 1:1 |
| Header/Banner | 1500px | 500px | 3:1 |
| Profile Photo | 400px | 400px | 1:1 |
| Card Image | 1200px | 628px | 1.91:1 |
How It Works
Upload your image
Drag and drop or browse. Supports JPG, PNG, GIF, BMP, and TIFF.
Klara resizes to 1600x900 + converts to WebP
Twitter/X's recommended 16:9 format — the widest display in the timeline for maximum visual impact.
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Get your optimized file instantly. No watermarks, no account needed.
Frequently Asked Questions
What size should Twitter/X images be in 2026?
Twitter/X images display best at 1600x900 pixels (16:9). Single images can also use 1200x1200 (square). Images are displayed in the timeline at up to 1200px wide, but uploading at 1600px ensures the sharpest display on high-DPI screens.
What is the Twitter/X header size?
Twitter/X profile headers should be 1500x500 pixels (3:1 ratio). This applies to both personal profiles and brand accounts.
Does Twitter/X support WebP?
Yes. Twitter/X supports WebP image uploads. WebP files are significantly smaller than PNG or JPEG, allowing faster uploads and better quality within Twitter's file size limits.
How many images can I post on Twitter/X?
Twitter/X allows up to 4 images per tweet. When posting multiple images, use consistent dimensions (16:9 or 1:1) for the best grid layout. Klara can batch resize all 4 images at once.
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