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Signature size for online application forms

Quick answer

Common signature sizes: PAN (Protean) 354 × 157 px under 50 KB; IBPS/SBI 140 × 60 px, 10–20 KB; NEET 10–30 KB; UPSC 20–200 KB, 350–1000 px; OCI 3:1 ratio. Sign in black ink on white paper and crop tight before resizing.

Almost every form that asks for a photo also asks for your signature. Signatures are where most upload errors happen: wrong shape, too small a file, or a grey shadowy background.

Last reviewed · Signatures · All sizes in one chart

Resize your photo for this form354×157 px · up to 50 KB · processed in your browser

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How to capture a clean signature

  1. Sign in the middle of a plain white A4 sheet with a black ball-point or gel pen. Sign at your normal size.
  2. Photograph it in daylight, holding the phone directly above the paper so the signature isn't slanted.
  3. In the converter, pick your signature preset, then use Crop to cut tight around the signature.
  4. Raise Contrast (about 150–180%) and Brightness a little until the paper is pure white and the ink is dark.
  5. Download and check the file: the signature should fill most of the box and be easy to read.

PAN card signature (Protean)

PAN signature — Protean (NSDL)

Use this preset
RequirementWhat the portal asksilovephoto.in preset
Dimensions2 cm (h) × 4.5 cm (w)354 × 157 px
Resolution200 DPI200 DPI (45 × 20 mm if printed)
FormatJPEG, black & whiteJPEG (.jpg)
File sizeUp to 50 KBup to 50 KB

NEET UG signature

NEET UG signature

Use this preset
RequirementWhat the portal asksilovephoto.in preset
FormatJPEGJPEG (.jpg)
File sizeQuoted as 4–30 KB or 10–100 KB (we use the overlap)10–30 KB
DimensionsNot specified350 × 150 px
ResolutionNot specified200 DPI (44 × 19 mm if printed)

UPSC signature

UPSC signature

Use this preset
RequirementWhat the portal asksilovephoto.in preset
Dimensions350–1000 px each side700 × 350 px
FormatJPEGJPEG (.jpg)
File size20–300 KB20–200 KB
ResolutionNot specified300 DPI (59 × 30 mm if printed)

IBPS / SBI signature

IBPS / SBI bank exam signature

Use this preset
RequirementWhat the portal asksilovephoto.in preset
Dimensions140 × 60 px (preferred)140 × 60 px
FormatJPEGJPEG (.jpg)
File size10–20 KB10–20 KB
ResolutionNot specified200 DPI (18 × 8 mm if printed)

Signatures in CAPITAL letters are not accepted for bank exams.

OCI signature

OCI signature (3:1)

Use this preset
RequirementWhat the portal asksilovephoto.in preset
Dimensions3:1 ratio (width : height)600 × 200 px
FormatJPEGJPEG (.jpg)
ResolutionNot specified300 DPI (51 × 17 mm if printed)
File sizeNot specifiedup to 200 KB

Common signature mistakes

  • Lots of empty paper around the signature — the signature becomes tiny after resizing. Crop tight.
  • Grey background — shadows from your phone. Increase brightness and contrast.
  • Signature on lined or coloured paper — use plain white.
  • Different from your usual signature — it may be compared with your signature at the exam or bank.

Frequently asked questions

Should my signature be in black or blue ink?

Black is safest — it scans with the most contrast. Most forms accept either.

How do I reduce my signature file to under 20 KB?

Pick a signature preset — it compresses to fit the limit automatically. If a form has a minimum size, the converter also makes sure the file isn't too small.

Always check the portal

Limits on government portals change between application cycles. If the form shows a different size, use those numbers — the converter's Create custom preset lets you enter any size.

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