Quick answer
A 3×3 grid is one square image divided into nine equal squares. Because the newest post appears first, publish the bottom-right tile first and the top-left tile last.
Prepare a suitable source
Use a photo at least 3240 × 3240 pixels when possible so each 1080-pixel tile has native source detail. Keep faces and text away from guide lines, because every square also appears as an individual post.
Frame the crop
Open Grid Maker, add a JPG, PNG or WebP, select 3×3 and use Zoom plus direct dragging to position the image. Review both the large crop and the smaller profile preview.
Download in publishing order
Select Download all as ZIP. Files 01-09 are already ordered for publishing: file 01 is bottom-right and file 09 is top-left. Confirm the first file against the profile preview before posting.
Avoid common mistakes
- Do not publish the top-left tile first.
- Do not place a word or face directly across a guide.
- Keep the original full image; the ZIP is a delivery set.
- Check existing pinned posts before a profile launch.