Upload bold-headline image
Upload a wide image with a single bold headline and high contrast — readability decides what survives the 2–3 second timeline glance.
Twitter (X) Post Image Resize
The recommended 1600×900px (16:9) for Twitter/X post images differs subtly from Facebook og:image (1.91:1) and Instagram landscape (1.91:1) ratios — so reusing an OG cut on X often results in slight side-cropping. X (since 2023) keeps single-image tweets near full ratio but applies square/vertical grid crops to multi-image tweets (2–4 images), so multi-image tweet plans should also validate the center-square crop. Tweets average just 2–3 seconds of attention — among the shortest on social — so on-image text works best as a single bold headline, and bold sans-serif on high-contrast backgrounds preserves mobile-timeline readability. This tool exports a precise 1600×900px JPG and previews the center-square crop used in multi-image tweets.
How to use
Validate single vs multi crop
For single-image tweets the full 1600×900 cut is fine; for multi-image tweets (2–4 images), verify the center-square crop still carries the key element.
Stay under 5MB
Export 1600×900px JPG under 5MB.
When to use this tool
Reusing a 1.91:1 OG image directly on X often clips the sides just enough to hide the focal element. Maintaining a separate 16:9 master for X is the fastest way to lift campaign efficiency on this channel.
Building a separate X 16:9 master so reused OG images stop getting side-clipped on the timeline
Validating that the center-square crop in multi-image tweets (2–4 images) does not chop off your hero element
Producing a series of single-headline content cards designed to land within a 2–3 second timeline view
Twitter (X) Post Image Spec Guide
Recommended sizes as of 2025. Based on single-image tweets — multi-image layouts may crop differently.
| 1600 × 900px |
| Aspect ratio 16:9 |
| File format: JPG, PNG, GIF (max 5MB; GIF max 15MB) |
| A 16:9 image displays in full without cropping in the timeline. |
| Portrait-oriented images may be cropped top and bottom, so landscape is recommended. |
| Use PNG if you need a transparent background. |
| Full 16:9 ratio is shown in the timeline. |
| Cropping may occur when attaching 2 or more images. |
| Single images maintain their original ratio. |
| Maximum file size: 5MB (photos), 15MB (GIFs) |
| Supported formats: JPG, PNG, GIF, WebP |
| Up to 4 images per post |
FAQ
Why does my Twitter (X) post image get cropped?
The timeline displays images closest to a 16:9 ratio. Tall or square images are automatically cropped, so resizing to 1600×900px beforehand prevents unexpected cuts.
What is the maximum file size for post images?
Still images (JPG, PNG) can be up to 5MB; GIFs up to 15MB. Keeping files under 5MB ensures fast uploads.
Should I still use 1600×900px when attaching multiple images?
Multi-image tweets auto-crop each photo differently. 1600×900px works best for single-image tweets; for two or more images, consider 1080×1080px squares.
Is PNG or JPG better for tweet images?
JPG is smaller and uploads faster, while PNG preserves sharper text and graphics. Use JPG for photos and PNG for infographics or screenshots.
Is this the same size used for Twitter link preview images?
No — link card previews use a separate recommended size of 800×418px (roughly 1.91:1). This 1600×900px spec is for images attached directly to a tweet.