What size should I upload for 3 Instagram feed posts?
For Feed mode, use 3240 x 1350 so each split image exports at 1080 x 1350 and aligns correctly in your profile grid.
Instagram 3-Post Splitter
Upload one image, adjust crop and zoom, then export 3 aligned posts for Feed or Reel Covers.
Select Post Type
Drag & drop image here
JPG, PNG, WEBP · recommended size 3240 x 1350
Live Preview | Feed
Upload an image to generate your 3-post layout.
Export Options
File names: post-1.png, post-2.png, post-3.png
Instagram Posting Guide
Upload in this order to keep the grid aligned:
- post-1.png (first)
- post-2.png (second)
- post-3.png (third)
Why Use GridPeek Image Splitter
GridPeek helps creators and brands prepare seamless multi-post layouts for Instagram without manual slicing. Upload once, adjust crop and zoom, then export three ready-to-post images for Feed or Reel Covers.
Built for Instagram specs
Feed exports at 1080 x 1350 and Reel Covers export at 1080 x 1920 with a centered safe zone.
Fast posting workflow
Downloads are named in order and include clear guidance to post in reverse sequence for proper grid alignment.
Live visual preview
See exactly how each of the three tiles will appear before you publish, reducing posting mistakes.
Privacy-first processing
Your files are processed in-browser, so you can generate assets quickly without account setup.
Frequently Asked Questions
What size should I upload for 3 reel covers?
For Reel Cover mode, use 3240 x 1080. The tool places each split into a 1080 x 1920 cover while preserving the centered 1080 x 1080 safe zone.
In what order should I post the split images?
Post in reverse order so your profile stays aligned: post-3.png first, then post-2.png, then post-1.png.
Are my images uploaded to a server?
No. Image processing runs in your browser, and downloads are generated locally on your device.