Learn how resizes image tools work, what algorithms they use, and when to use each format.
Select a supported image/PDF file from your device.
Enter width and height in pixels, or choose a percentage or physical unit.
Toggle aspect ratio lock to keep proportions when changing one dimension.
Get your resized image in desired format.
Resize photos to exact platform requirements for profile pictures and cover images.
Set dimensions in inches or CM for accurate print layouts.
Create consistent thumbnail sizes for blogs, videos, and product listings.
Reduce image dimensions to keep email file sizes manageable.
Generate exact-pixel assets for iOS, Android, and web interfaces.
Resize a collection of photos to a uniform size for galleries or presentations.
Reducing size always preserves more sharpness than enlarging. Capture at a higher resolution when possible.
Percentage resize keeps exact proportions without needing to calculate the second dimension.
Each resize-and-save cycle can degrade quality. Start from the original file each time.
For print, 300 DPI is standard. Use the inch/CM mode to set a size that translates correctly.
Some quality loss is unavoidable when enlarging. The tool uses high-quality resampling to minimise it.
Output can be up to 16,000 × 16,000 pixels.
Yes. Smaller pixel dimensions generally mean a smaller file size when saved.
Yes. Select the unit from the dropdown and enter your desired physical dimensions.
Yes. You can unlock it to stretch or squash the image independently.