How to Resize a Photo and Signature for Exam and Admission Forms
What size in KB, pixels and DPI mean on application forms, and how to get a photo or signature to match the stated requirements.
Read the requirement carefully
Forms usually list three things: the file format such as JPG, the dimensions in pixels or centimetres, and a maximum or range of file sizes in KB. Write them down before you edit anything. The most common rejection is meeting the size limit but not the dimensions, or the other way around.
Pixels, DPI and file size are different
Pixels describe how many dots wide and tall the image is. DPI is a print setting that tells software how large those pixels should appear on paper. File size, measured in KB, depends on both the pixels and how strongly the image is compressed.
If a form asks for 200 × 230 pixels, the DPI does not change the pixel count. If it also asks for a certain DPI, set that separately.
A reliable order of work
First crop the image so the face or signature fills the frame in the way the form shows. Then resize to the required pixel dimensions. Finally compress until the file size is inside the limit. Doing it in this order avoids repeatedly shrinking an already small image.
Signature tips
Sign with a dark pen on plain white paper. Photograph it in good light, crop tightly and avoid shadows. A clean white background compresses well, so you can often meet a small KB limit without losing clarity.
Photo tips
Use a plain, light background and even lighting, and keep your face centred. Check the form's rules about glasses, head position and recent photos, because the portal or the reviewing office may reject images that do not follow them.
Check before you upload
Open the final file and confirm the format, dimensions and size one more time. A checker that shows pixel size, DPI and KB together saves guesswork.
This guide is general information. Rules differ between institutions, so confirm requirements with your college or the portal you are using.