To bring a photo under 20 KB or 50 KB and keep it sharp, first resize it to the pixel size your form asks for, then lower the JPEG quality only as far as needed. Most blurry results come from doing it the other way round: squeezing a large phone photo straight down to a tiny file.
A phone photo is often several megabytes and thousands of pixels wide. A form photo is a few hundred pixels. Once the pixels match, the KB limit is usually easy to meet.
Know the exact limit first
Limits like these are usually the two ends of a range, not single targets. Some examples from official notices:
| Exam (notice year) | Upload | Size | KB range |
|---|---|---|---|
| IBPS PO 2026 | Photo | 200 × 230 px (preferred) | 20–50 KB |
| IBPS PO 2026 | Signature | 140 × 60 px (preferred) | 10–20 KB |
| SSC CGL 2026 | Signature | about 6.0 × 2.0 cm | 10–20 KB |
| Bihar Police Constable 2026 | Photo | no pixel size set | 15–25 KB |
| CTET 2026 | Signature | 3.5 × 1.5 cm | 3–30 KB |
Notice the minimums. A signature of 9 KB is too small for SSC CGL 2026 even though it is under the maximum. Aim for the middle of the range rather than the edge.
Why photos go blurry
- Too few pixels. Shrinking a photo far below the asked size and then stretching it back up makes it soft.
- Too much compression. At very low JPEG quality you see blocks and smudged edges, especially around hair and letters.
- Saving again and again. Each time a JPEG is opened and saved, it loses a little more. Start from the original photo every time.
- Chat apps. Sending a photo to yourself on a messaging app compresses it once already. Use the original file from the camera or gallery.
The right order
- Crop to the right shape first, with the face centred. A 200 × 230 photo is slightly taller than it is wide.
- Resize to the exact pixel size in the notice.
- Save as JPG and lower the quality step by step until the file is inside the range.
- Look at the result at full size. If the face is still clear, you are done.
A plain, light background also helps. Flat areas compress well, so more of the file size goes to your face instead of a busy wall behind you.
When the file is too small
A simple signature on white paper can come out below the minimum. Do not draw borders or add noise by hand. Raise the JPEG quality, or use a tool that pads the file up to the minimum without changing what the picture shows.
What to do next
Use compress image to 20 KB or compress image to 50 KB for a quick fix, or the photo resizer to crop, resize and fit the KB range for your exam in one go. Your photo stays on your device.