Threads image resizer
Get every Threads image size right the first time, without design software.
Table of contents
Threads image resizer
Drop an image and get it resized and cropped to every Threads size. Nothing is uploaded; the file stays in your browser.
How to resize an image for Threads
- Drop your file
Or type the width and height to check a size without a file. - Pick the placement
Choose square post, portrait post or landscape post. - Adjust the crop
Drag the frame so the subject stays in view; the cut is drawn on your own file. - Download
Export at the exact pixel size and upload it to Threads.
Threads image sizes in 2026
JPG, PNG, WebP or HEIC, up to 8 MB, up to 4 images per post; images are downscaled to about 1.6 MP.
| Use | Size (px) | Ratio |
|---|---|---|
| Square post | 1080 x 1080 | 1:1 |
| Portrait post | 1080 x 1350 | 4:5 |
| Landscape post | 1080 x 566 | 1.91:1 |
A worked example
Take a typical iPhone photo, 4032 x 3024 (4:3):
- Square post (1080 x 1080): the full height is kept, the width is cut to 3024 px, so about 25% of the width is lost before scaling to 1080 x 1080.
- Portrait post (1080 x 1350): the full height is kept, the width is cut to 2419 px, so about 40% of the width is lost before scaling to 1080 x 1350.
- Landscape post (1080 x 566): the full width is kept, the height is cut to 2113 px, so about 30% of the height is lost before scaling to 1080 x 566.
The resizer draws that cut on your own file before you export, so you can drag the frame to keep the subject in view.
What the tool is doing
It reads the pixel size of your file in the browser, draws it on a canvas, crops it to the shape you pick and re-encodes it at the exact export size. There is no upload request, and metadata such as EXIF location is not carried over.
Image shape and attention in the feed
Most Threads browsing happens on phones, where a taller image takes more of the screen. A portrait 4:5 image is the tallest shape most feeds show without cropping, so it holds attention longer than a wide landscape one. The format gets the post noticed; the reactions it earns in the first hours decide how far it goes.
Keep exploring
- Threads Image Size Checker
- Threads Engagement Rate Calculator
- Threads Best Time to Post
- Threads Bio Generator
- Threads Caption Generator
- All free Threads tools
- Threads growth
The file is the right size. Now get it seen.
A clean image earns the first look. Real likes and replies decide how many people see it next.
Frequently asked questions
What size should a Threads post image be?
Square post: 1080 x 1080; Portrait post: 1080 x 1350; Landscape post: 1080 x 566.
What file types and sizes does Threads accept?
JPG, PNG, WebP or HEIC, up to 8 MB, up to 4 images per post; images are downscaled to about 1.6 MP.
Is my image uploaded anywhere?
No. The file is read and re-encoded in this browser tab.
What does a well-made image give?
It grows the account, but you need the right tool.
How many images can a Threads post have?
Up to 4 per post; images are downscaled to about 1.6 MP.
What image sizes work on Threads?
1080 x 1080, 1080 x 1350 or 1080 x 566, up to 8 MB.
What are the Threads profile limits?
Bio 150 characters and display name 30; the username comes from Instagram.