Free tools, explained

What each free tool does, how to use it and what its numbers mean.

Can you preview an Instagram post before you publish it?Instagram shows the crop, caption and cover as you build a post, and Meta Business Suite a feed preview, but neither draws the 3:4 grid crop.
How do you make a 3-, 6-, 9- or 12-post grid on Instagram?Cut one picture into 3 columns and 1 to 4 rows of 1080 × 1440 pieces, the profile grid’s 3:4 shape, and post them in order. Sizes, order and the reorder tool.
How do you split one wide image into Instagram carousel slides?Cut one wide picture into equal slides of 1080 × 1350, one shape for every slide, and choose them in order. Sizes for 2 to 5 slides and the app steps.
Where do the buttons cover a Reel or a Short?On a 1080 × 1920 video, Meta’s ad figures keep 269 px clear at the top and 672 at the bottom; Google’s keep 288 and 672.