Large-format print planner
Plan the pixels before printing a poster.
Resolution and distance
Poster DPI is a workflow decision.
Viewing distance changes the requirement
A large poster viewed from several feet away does not need the same pixel density as a hand-held print. The printer, substrate, content, and expected viewing distance still determine the acceptable target.
150 DPI is not automatically print-ready
It can be a useful draft target for large output, but small type and sharp graphics may still need more resolution. Ask the print provider for its current file requirements instead of guessing from dimensions alone.
AI detail remains reconstructed
Upscaling can make a preview appear detailed, but invented lines or textures are risky in typography, maps, logos, and product claims. Inspect these details at 100% and keep the original source.
Production boundary
Dimensions, bleed, and the free preview are separate checks.
- Choose the finished size and bleed
The planner adds the selected bleed to every edge before converting inches to pixels at the chosen DPI.
- Check whether the source really covers it
Both dimensions must have enough pixels for the intended crop. A large megapixel count can still fail when the poster has a very different aspect ratio.
- Treat the 2048 px preview as a limit
A 24 × 36 inch poster already needs 3600 × 5400 pixels at 150 DPI before bleed. The free preview cannot supply that production file.
- Verify with the printer
Confirm color profile, crop marks, safe area, bleed, file format, and whether text must remain vector.
Poster FAQ
Plan the file, not just the picture.
What DPI should I use for a poster?
Poster DPI depends on viewing distance, source detail, printer workflow, and the file requirements you receive. 150 DPI can be a practical draft target for a large poster viewed from farther away, while 300 DPI requires far more source pixels.
Can ImageBig create a print-ready 24 by 36 inch poster?
No. The free AI preview is capped at 2048 pixels on the longest edge, which is below a 24 by 36 inch poster at 150 or 300 DPI. Use the planner to identify the gap and a production workflow that satisfies the printer.
Why does poster bleed add to the required pixels?
Bleed extends artwork beyond the trimmed edge so small alignment differences do not leave an unprinted border. The pixel requirements therefore include the bleed area on every selected edge.
Check the image before the print quote.
Run a private preview only when its resolution and reconstructed detail are appropriate for your poster workflow.
Sources and verification
Primary references
- Adobe Photoshop image size and resolution ↗ — Vendor documentation for pixel dimensions, resolution, and print sizing.
These links identify the primary standards or provider guidance used for this page and were checked on . Third-party requirements and policies can change. Verify them with the provider before production or upload.