Resize Images to 2480×3508
Resize your images to A4 paper size at 300 DPI (2480×3508 pixels). Standard professional print resolution for documents, posters, and photo prints.
Image resizer
Drag and drop files or folders here, or
All image formats — up to 50MB each, or 50 from a folder
Ctrl+Z undo · Ctrl+Y redo
Leave one blank to auto-calculate from aspect ratio.
Preserve camera info, GPS, and other metadata
Keyboard Shortcuts
General
When to Use A4 Print (300 DPI)
A4 at 300 DPI is the standard for professional printing — reports, posters, flyers, photo prints, and any document that needs to look sharp on paper.
Tips for A4 Print (300 DPI) Images
For print, use the highest quality setting (95–100) and keep the original format or use PNG. Strip metadata to reduce file size without affecting print quality.
Frequently Asked Questions
Why 300 DPI?
300 DPI (dots per inch) is the standard for high-quality printing. Lower DPI (e.g., 150) produces visible pixelation when printed at A4 size.
My image is smaller than 2480×3508 — can I still print it?
You can, but it may look soft or pixelated. KoalaPic won’t upscale your image. For best results, start with a high-resolution source image.