Resize Image for Twitter / X Online — Free
Runs 100% in your browser — your files never leave your device.
X shows timeline images in a 16:9 crop, and anything taller gets clipped without warning. Pick the format, and your image is center-cropped to the exact shape, then scaled to the recommended pixels — so what you see is what posts. The resize happens entirely in your browser.
How it works
- 1
Drop your image
JPG, PNG, or WebP — its current size is shown right away.
- 2
Pick the format
Timeline post (16:9) or square (1:1) at X's recommended pixel sizes.
- 3
Download
The image is center-cropped and scaled locally, then saved with one click.
About this tool
X (Twitter) image dimensions
Timeline images render at 1600×900 for landscape and 1080×1080 for square; the in-stream preview crops to 16:9. Header banners want 1500×500. Resizing to these shapes means the platform shows your composition, not its own crop.
The 16:9 preview crop
Single-image tweets display at 16:9 in the timeline — a portrait photo gets center-cropped and loses its edges. Pre-crop to 16:9 with the crop tool, then resize to 1600×900 here for full control of what viewers see.
Text in images needs headroom
If your image carries text — quote cards, announcements — leave margin around it. Platform crops and view sizes vary, and text touching the edges is the first casualty of any reframe.
Frequently asked questions
What is the best size for a tweet image?
1600×900 for landscape (fills the timeline preview), 1080×1080 for square. Both render sharp at X's display sizes.
What size is the X header banner?
1500×500. The tool presets it; keep profile-relevant content centered since mobile crops tighter than desktop.
Why does my image look soft after upload?
X recompresses uploads. Upload at the recommended dimensions from the highest-quality source — resizing a compressed screenshot compounds the softness.