Utilities
Poster Size Resizer
Pick an A-series size and DPI, then export a print-ready PNG.
Files are processed locally in your browser. Nothing is uploaded.
How it works
- Upload your file
- Configure options
- Preview result
- Download/export
Tool
Drop image or click to upload
Supports drag & drop. Kept locally in your browser.
Target pixels: 3508 × 4961
Result
Upload a file to see preview, size, dimensions, and download options.
Frequently asked questions
We convert mm to inches (mm / 25.4) and multiply by DPI, then round to whole pixels.