One picture has to survive four different crops. Compose inside the safe area and it always works. Let the subject or the words drift into the bleed and the page will guillotine them.
Supply a 16:9 image. Every other slot is cut from it, centred. The striped red bands are bleed: the 4:3 thumbnail eats 12.5% off each side, so anything there is gone. The amber bands are the few percent the social card trims top and bottom. The green box is the safe area: keep the subject, faces, logos and every word inside it.
This is the part you were right to worry about. Below is one composition shown through all four real crops. When the words run wide, the 4:3 box decapitates them. When they sit in the safe zone, they survive intact. The top and bottom barely move; the sides are the whole danger.
✕ Text let into the bleed| Supply ratio | 16:9 |
| Long edge | 1600px+ (2000 ideal) |
| Safe inset · sides | 15% |
| Safe inset · top/bottom | 10% |
| Keep all text within | centre 70% width |
The one rule: nothing that matters (a face, a logo, a number, a word) in the outer 15% left or right. The page renders the headline in type, so the best hero carries no baked-in text at all.
Then drop it into the editor. The desk treatment (grayscale + halftone) is automatic, so generate clean and let the page do the look.