1440 × 1920 pixels (3:4), the shape the Threads feed shows. Squares of 1080 × 1080 also work.
Free tool by Mydrop, no signup
Free Threads image resizer
Threads shows images in 3:4 in the feed: resize any photo to 1440 × 1920 pixels, or to a 1080 × 1080 square, here.
1Pick the network and size
2Add your photo
3Adjust and download
Post it to Threads at the right size
Mydrop shows each image in the real Threads preview and publishes on schedule, next to 9 more networks.
Your photo never leaves your device: it is resized in your browser and nothing is uploaded.
How to size images for Threads
3:4 fills the feed
The Threads app shows images in 3:4. A 1440 × 1920 photo takes the full slot without bars.
API limits: 1440 wide, 8 MB
Threads' publishing API takes JPEG or PNG, 320 to 1440 pixels wide, up to 8 MB, which is what scheduling tools use.
Carousels of up to 20
A post can carry a carousel of 2 to 20 images or videos. Keep every image the same ratio.
Example: “A 4,032 × 3,024 photo for a Threads post” = a 2,268 × 3,024 crop, saved at 1,440 × 1,920
Sizes checked on October 10, 2026, against Meta's Threads API docs.
Threads size guide
Every Threads image size for 2026
The upload size for Threads posts, and the limits scheduling tools work with.
| Format | Size (px) | Ratio | Good to know |
|---|---|---|---|
| Portrait post | 1,440 × 1,920 | 3:4 | Threads shows 3:4 in the feed. The API takes up to 1440 px wide and 8 MB. |
| Square post | 1,080 × 1,080 | 1:1 | Shows whole in the feed; good for quotes and graphics. |
Threads' publishing API, which scheduling tools use, takes images up to 1440 pixels wide: 1440 × 1920 is the largest 3:4 image it accepts.
Sized, checked, published
Threads posts at the right size, in Mydrop
Mydrop shows every image in the real Threads preview and publishes text, images and video to Threads on time.
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Questions
Threads image sizes, answered
A carousel of 2 to 20 images or videos. Keep them the same ratio.
Up to 8 MB, JPEG or PNG, 320 to 1440 pixels wide, through Threads' publishing API.
Yes. No signup, no watermark, no limit, and your photo never leaves your device.
Size it here. Post it to Threads with Mydrop.
Preview, approve and publish every Threads post at the right size. Free to start.
