Resize a photo to 50 KB

50 KB is room to spare, if the size is right

At the sizes forms ask for, 50 KB is generous. A 200 × 230 pixel photo, the size the SBI notices prefer, is usually well under 50 KB even at high quality. Where people get stuck is the other way round: a phone photo at full size is several megabytes, and the minimum, often 20 KB, catches files that were squeezed too hard by another tool.

How it lands between the limits

The tool encodes the photo as a JPEG, measures it, and adjusts the quality until the file is the best it can be under 50 KB. If you set a minimum and the result is under it, which happens with small, plain photos, it adds empty bytes inside the file until it reaches the minimum. Forms check only the byte count, so the file passes, and the picture is exactly the same.

Both limits are read strictly: 50 KB means 50,000 bytes, and a 20 KB minimum means 20,480 bytes, so the file passes whether the portal counts 1,000 or 1,024 bytes to a kilobyte.

Pixels and centimetres

If the form gives a size, set it. In Pixels, type it as given, for example 200 × 230. In Centimetres, type the size and the DPI, for example 3.5 × 4.5 cm at 200 DPI, which works out to 276 × 354 pixels. The crop box takes the form's shape, so you choose what is in the frame instead of having the photo squashed.

Before you upload

Use Check a file on the file you are about to upload. It shows the real format, KB and pixels against the rules, with pass or fail on each, and Fix it sends the file straight back to the resizer if something fails.

The rules for each exam, read from its own notice, are on the exam photo sizes pages.

Forms that use these limits

From the official notices we have read, with the pages they are on listed on each exam page:

• SBI PO and SBI Clerk (Junior Associates) 2026: photograph 20–50 KB at 200 × 230 pixels (preferred), 200 DPI, light background; left thumb impression 20–50 KB at 240 × 240 pixels.
• India Post GDS 2026: photograph 30–100 KB, 320 × 400 pixels recommended, plain white or light background.
• CTET September 2026: photograph 10–100 KB at 3.5 × 4.5 cm.

Each of these has its own page under exam photo sizes, set to the right numbers.

Why another tool's file failed

A file that "looked fine" is usually rejected for one of three reasons. It was under the minimum, because the other tool squeezed it as hard as it could. It was a PNG renamed to .jpg, which some portals detect from the file's first bytes. Or it was 50 KB by one way of counting and 51 by the other. This tool checks all three: it writes a real JPEG, keeps above the minimum, and counts KB the strict way in both directions.