Image resizer and cropper for social posts
Choose a picture, pick a shape such as Instagram 4:5, TikTok 9:16 or Dribbble 800 by 600, move the focus point, and download the crop. The tool also checks your picture against each network's published image rules. The picture is processed in your browser and never uploaded.
Drawn and cropped in your browser, never uploaded.
The tallest shape Instagram takes in its feed range (4:5 to 1.91:1).
Keep the main subject in the middle: networks overlay their own buttons near the edges.
Choose a picture to see the checks for every network.
Check it here, then publish it to every network with 1Post
- X
- LinkedIn profile
- LinkedIn Page
- Facebook Page
- Threads
How it works
- 01
The presets are shapes that satisfy each network's published rules, not sizes the network recommends.
- 02
Keep the main subject in the middle of the picture: networks crop and overlay their own buttons. The focus control picks which part of the picture the crop keeps.
- 03
Copy a link to the result, or open it in the composer with 1Post and schedule it to every network.
What it checks
- Instagram shapeThe picture must sit between 4:5 and 1.91:1.
- Threads widthThreads scales a picture into 320 to 1440 pixels wide.
- TikTok photosA photo taller than 1080 on the short side is scaled down by 1Post.
- Dribbble sizesExactly 800 x 600 or 400 x 300 pixels.
- Pinterest pinsPictures in a multi-image pin must have matching sizes.
It runs in your browser. Nothing you type or choose is uploaded, and the page works without an account. To publish what you made, start a trial and open it in the composer.
Questions
Is my picture uploaded?
No. It is drawn and cropped in your browser and the result is downloaded from there.
Why not just one size for everything?
Networks take different shapes. Instagram has a shape range, Dribbble takes exact sizes, and Pinterest wants matching sizes in one pin. The checks list each.
Does the crop lose quality?
A crop never upscales: the output is the cropped part at your target size, so a small source is shown as small. The tool tells you when the source is smaller than the target.
Sources
- Instagram Platform: content publishing, read 2026-10-22
- Threads API: posts, read 2026-10-22
- TikTok for Developers: Content Posting API, read 2026-10-22
- Pinterest API: create a Pin, read 2026-10-22
Related
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