Best PPI for posters

Check the source pixels and final physical size

Resolution decisions should start with the actual pixel dimensions, the intended physical output and the target or provider-specified PPI. Metadata labels alone do not add or remove source pixels.

Apply the answer to this specific question

Poster resolution should be chosen from final size and expected viewing distance rather than applying one universal number to every poster. The practical consequence should be checked with Poster Resolution Calculator, Viewing Distance Resolution Planner when your own dimensions, page count, cost or production values differ from the example implied by the question.

What commonly changes the result

For “Best PPI for posters”, the most important variables are the ones represented by the linked calculator and any provider-controlled specification. A correct arithmetic result can still be unsuitable if the source dimensions, category, page yield, trim, bleed, margin or production method were assumed incorrectly.

A better verification workflow

For Best PPI for posters, record the source measurement or controlling specification first, then run the real job values through poster resolution, viewing distance resolution. Keep the result with the job notes, compare it with the physical file or material, and recheck any provider-controlled rule immediately before production or upload.

Practical answer

Poster resolution should be chosen from final size and expected viewing distance rather than applying one universal number to every poster.

When the decision affects a paid print run, book upload, client order or expensive material, keep the calculation with the job notes and verify any external specification again immediately before production.

Sources