Split an image in 12 parts

Twelve is a month

For an account posting three times a week, twelve tiles is about a month of content. Thats the real decision here — not whether the picture will cut cleanly, but whether you want the next month of your profile to be one image. The upside is that four rows fill the whole visible profile on most phones.

Four layouts

• 3×4. Three across, four down. The profile layout, and what this page opens on.
• 4×3. For printing and for wide pictures. It doesn't line up with a profile.
• 2×6 and 6×2. Long thin arrangements, for banners and for very tall or very wide sources.

The posting problem

Twelve posts back to back is a lot to ask of anyone following you, and theres no way around it — a grid goes up in one run or something lands in the middle and breaks it. Two things make it survivable: give every tile a caption, and pick a picture where every square is worth looking at on its own.

Twelve sheets of paper

In print mode this is a genuinely large poster. At that size the source resolution matters more than anything else — twelve A4 sheets at 300 DPI is a canvas of roughly 7400 by 13500 pixels, which most photographs are nowhere near. 150 DPI is the honest setting for anything from a phone camera.

Layout	Paper	Finished size
3 × 4	A4 portrait	about 60 × 114 cm
4 × 3	A4 landscape	about 114 × 60 cm
3 × 4	A3 portrait	about 85 × 161 cm
2 × 6	A4 portrait	about 40 × 171 cm

How to split an image into 12

1. Pick 3×4 for a profile, 4×3 for a wide print, or 2×6 for a banner.
2. Add a large image and drag it until every square has something in it.
3. Choose 1:1 for a grid, or switch to Print mode for a poster.
4. Download and publish tile 1 through tile 12, in order, in one session.

Questions