Threads Post image size — 1080 × 1080 px
Square is the default and the safest; portrait up to 4:5 also displays.
Drop an image here or click to choose a file
It is centre-cropped and resized to exactly 1080 × 1080 px in your browser — nothing is uploaded.
Threads Post image specifications
Square is the default and the safest; portrait up to 4:5 also displays.
Why the exact size matters
When you upload something bigger than the platform expects, it is resized on their servers — usually with a fast algorithm that softens edges and introduces artefacts around text. Resizing to the exact pixel dimensions first means the platform has nothing to change, and what you approved is what appears.
The tool above centre-crops to 1:1 and then scales to exactly 1080 × 1080. If your source has an important element near an edge, crop it yourself with the image cropper first.
Every platform
Threads Post image — FAQ
What is the Threads post image size?
What file format should I use?
Does this tool upload my image?
Can I get a PNG instead of a JPG?
More image tools
All 12 other tools in this collection — free, no sign-up, nothing uploaded.