Photo & Signature Resizer
Resize student photos and signatures to the required dimensions and file-size range. Choose pixels or centimeters, preview changes live, and download as JPG. Images stretch to fill the selected dimensions.
Choose photo or signature
JPG, PNG or WebP · JPG download by default
Output dimensions (optional; leave both blank to keep original size)
Target file size
Download is always saved as JPG / JPEG.
Upload an image to see the live resize preview
Preview updates as you change dimensions.
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Understanding Width, Height and DPI (Optional)
Width and Height: Set the exact dimensions in Pixels, Centimeters or Inches if the portal specifies a fixed photo size (for example 3.5cm x 4.5cm for passport-size photos).
DPI: Dots Per Inch is used to convert Centimeter or Inch values into pixels accurately for print-quality output. If left blank, a standard 96 DPI is used.
Both fields are optional – if you only care about the final file size and not the exact dimensions, you can leave Width, Height and DPI blank and fill only the required Min/Max size in KB.