HOW TO USE
How to use Image Resizer
Resize by exact pixels or use A3, A4 and A5 paper proportions with optional aspect-ratio locking.
What this tool does
Image dimensions affect loading speed, display size and print quality. Matching the destination avoids unnecessary data.
Aspect-ratio lock preserves the original shape; paper presets intentionally match a selected page proportion.
Useful for
- Prepare a standard web width
- Match a print-paper ratio
- Give several images consistent dimensions
Three simple steps
- 01
Choose an image
- 02
Select a preset or enter pixels
- 03
Check the proportions and download
Tips for better results
Avoid extreme enlargement
Upscaling a small source can reveal blur and jagged edges.
Check print DPI
Print quality also depends on DPI and printer margin settings.
Frequently asked questions
Can I change the aspect ratio?
Yes. Unlock it first, noting that the image may stretch.
Can I switch A4 orientation?
Yes. Choose portrait or landscape in the paper preset.