Resize Image to A1
Prepare artwork, architectural drawings, signs, charts, and posters on an exact A1 594 x 841 mm canvas.
Accurate large-format pixels without uploading
Exact physical proportions
Create the correct width-to-height ratio in portrait or landscape orientation.
Practical DPI choices
Use 72, 100, or 150 DPI to balance detail, viewing distance, and browser memory.
Clean local export
Crop or fit the image and download JPG or PNG without the preview guide.
A1 pixel dimensions
| Setting | Result | Best use |
|---|---|---|
| 72 DPI | 1684 x 2384 px | Light drafts and screen review |
| 100 DPI | 2339 x 3311 px | Distance-viewed posters |
| 150 DPI | 3508 x 4967 px | Detailed large-format output |
| Paper size | 594 x 841 mm | ISO 216 A1 standard |
How it works
- 1
Upload your image
Choose a high-resolution photograph, poster, artwork, map, or design.
- 2
Choose output settings
Set orientation, DPI, fit, position, background, and file type.
- 3
Download the resized image
Review the preview and save a clean image without guide lines.
How to resize for A1 printing
A1 paper measures 594 x 841 mm and has the ISO A-series square-root-of-two aspect ratio. At 150 DPI, portrait output is approximately 3508 x 4967 pixels.
Large prints are normally viewed farther away, so 100 or 150 DPI can be practical. Confirm bleed, trim, color profile, and final scaling with your print provider.
Frequently asked questions
What size is A1 in pixels at 150 DPI?
A1 is approximately 3508 x 4967 pixels in portrait orientation at 150 DPI.
What are A1 dimensions?
A1 measures 594 x 841 millimeters.
Is 100 DPI enough for an A1 poster?
It can be suitable for posters viewed from a distance, depending on image detail and print method.
Does the safe-area line appear in the download?
No. It is a preview-only composition guide.
Resize Image to A1 last reviewed: Aug 2, 2026.