Poster Size Image Resizer

Prepare artwork for standard photo, movie, event, and ISO poster formats with exact pixel calculations and composition controls.

Poster size editorUpload an image to begin
Upload an image and prepare an exact print-ready raster in your browser.

Advertisement

Popular poster dimensions in one editor

Six useful presets

Choose photo posters, theatrical one-sheets, or A-series formats without calculating pixels manually.

Composition controls

Crop, fit, reposition, and preview a trim-safe guide before export.

Memory-aware output

Practical DPI presets and an 80-megapixel limit reduce failed browser exports.

Poster size guide

SettingResultBest use
18 x 24 in3:4 ratioEvents, retail displays, and photography
24 x 36 in2:3 ratioWall posters and photographs
27 x 40 inTheatrical one-sheetMovie and promotional posters
A3 to A1ISO A-series ratioInternational print workflows

How it works

  1. 1

    Choose a poster preset

    Select the physical format, orientation, and resolution.

  2. 2

    Compose the image

    Use fill or fit and move the subject away from trim-sensitive edges.

  3. 3

    Export for printing

    Download JPG or PNG and verify final requirements with the printer.

Choosing a poster size and resolution

Poster dimensions vary by region and purpose. Photo formats commonly use 2:3 or 3:4 ratios, theatrical one-sheets use 27 x 40 inches, and international posters often use ISO A-series paper.

Viewing distance matters as much as DPI. A large display may look excellent at 100 or 150 DPI when viewed from several feet away. Always confirm bleed, color space, and file format with the print provider.

24x36 ResizerAdd Print Bleed

Frequently asked questions

What resolution should a poster be?

100 to 150 DPI is often practical for large posters, while requirements vary by printer and viewing distance.

What is the standard movie poster size?

A common theatrical one-sheet is 27 x 40 inches.

Should I crop or fit the image?

Crop fills the entire poster; fit preserves all content but may add background space.

Are images uploaded?

No. Resizing and export happen locally in your browser.

Poster Size Image Resizer last reviewed: Aug 2, 2026.