How to get a clean signature image
- Sign 2 or 3 times on plain white paper with a black ink pen. Pick the best one.
- Take the photo in daylight, holding the phone straight above the paper to avoid shadows.
- Open it here and choose "Crop to fill", so the signature fills the box.
- Adjust the Ink threshold until the background is white and all strokes are visible.
- Download the JPG and upload it to your form.
Common signature requirements
| Form type | Typical size | Typical KB |
|---|
| Bank exams (IBPS, SBI) | 140 × 60 px | 10–20 KB |
| SSC | 4.0 × 2.0 cm | 10–20 KB |
| UPSC | 350–1000 px | 20–300 KB |
Typical values from past notices. Always check the current notification.
Now resize your photo with the photo resize to KB tool and check your age on the cut-off date with the age calculator.
Frequently asked questions
How do I make a signature image for an online form?
Sign with a black or blue pen on plain white paper, take a clear photo with your phone, and open it here. Choose the size and KB limit, keep 'Clean background' on, and download the JPG.
What signature size do bank exam forms need?
IBPS and SBI forms have commonly asked for 140 × 60 px and 10–20 KB. Check the current notification, as rules can change.
What does Clean background do?
It turns the grey or shadowy paper into pure white and darkens the ink, so your signature looks crisp and the file size drops. Move the Ink threshold slider if thin strokes disappear or the background stays grey.
Can I use a digital signature drawn on the phone?
Most forms want a scan or photo of your real handwritten signature. Check the instructions in your notification.