Image Resizer & Compressor
Adjust dimensions, preserve metadata, and hit exact file sizes instantly.
What is DPI and Why Does it Matter?
DPI stands for Dots Per Inch. It is a measurement that tells a printer how many physical dots of ink to put on paper for every inch of your image.
Computer screens only understand pixels, not centimeters or inches. When you tell our tool to resize your image to "3.5 cm wide," the computer needs a way to translate that physical size into digital pixels. It uses the DPI setting (defaulted to 300, which is high-quality print standard) to do this math.
- Low DPI (e.g., 72 DPI): Used for web viewing. If you print it, the ink dots are spread out, making the image look blurry or blocky.
- High DPI (e.g., 300 DPI): Used for official documents and printing. The printer packs lots of ink dots tightly together, creating a very sharp, clear image.
By keeping the tool set to 300 DPI, you guarantee that when exam authorities print out your application form, your photo and signature will remain perfectly crisp and clearly identifiable!
