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Signature Resize to 10KB

Resize your scanned signature to 140x60 px and compress it under 10 KB for strict government portal uploads. Free.

Popular compression sizes

Quick start

Done in 3 steps

  1. 1

    Upload your signature image

    Open the file from your phone or computer. Works with JPEG, PNG, and WebP. If you scanned your signature, upload the scan directly.

  2. 2

    Scaled to 140x60 and compressed under 10 KB

    Your signature is scaled down to 140x60 pixels. Then the tool compresses it to fit under 10 KB. This is a strict limit, so use a clear, high-contrast signature for the best result.

  3. 3

    Download and attach to your form

    Save the JPEG. Go to your state government or central portal and attach this file in the signature upload field.

Requirements

Digital Signature Requirements (10 KB)

Certain state government portals and older central government systems cap the signature upload at 10 KB. At this size, image quality depends almost entirely on the original scan quality.

Dimensions
140 × 60 px
Format
JPEG
Max file size
10 KB
Resolution
96 DPI
Background
Plain white paper only. Any background texture or colour will worsen quality at 10 KB.

Additional requirements

  • Use a dark black or dark blue pen. At 10 KB, contrast matters most. Light or faded ink will not survive the compression.
  • Keep at least 10 mm of white space on all four sides when cropping the signature image.
  • Scan at 300 DPI if possible, or photograph in natural daylight for the sharpest result.
  • The signature area must be completely clean. Any ruled lines, stray marks, or smudges will show up at this file size.
  • Keep your signature within the central 80% of the image frame. Edges get cropped during resizing.

Source: Standard Government Portal Digital Signature Specification· Updated June 2026

Troubleshooting

Common issues & fixes

If your upload is rejected, one of these is usually the reason.

  • Signature file exceeds size limit

    What you see

    Portal shows "Signature file size must be under 20 KB" or similar.

    How to fix it

    This tool automatically compresses your signature to under 20 KB. Re-process and download again.

  • Background not white or off-white

    What you see

    Portal rejects the signature or the preview shows a coloured/dark background.

    How to fix it

    Sign on a clean sheet of plain white paper. Avoid ruled notebooks or coloured paper. Photograph in bright, even lighting (no shadows over the signature).

  • Signature is too faint or not legible

    What you see

    Automated check flags "Signature not detected" or the scanned signature is barely visible.

    How to fix it

    Use a black or dark blue ball-point or gel pen. Avoid felt-tip pens that bleed. Make sure lighting is even and there are no shadows across the signature.

  • Signature dimensions rejected

    What you see

    Portal shows "Signature must be 140 × 60 pixels" or similar dimension error.

    How to fix it

    This tool resizes your signature image to exactly 140 × 60 pixels. Use the processed download, not your original scanned file.

  • Lines or marks around the signature

    What you see

    The portal or verifier flags "Signature contains ruled lines or marks".

    How to fix it

    Sign on blank white paper, not on a ruled or printed page. Leave at least 1 cm of blank white space on all sides of your signature before scanning or photographing.

Frequently asked questions

Which portals require a signature under 10 KB?
Several state government portals and some older central government recruitment sites set a 10 KB cap for signature uploads. If your portal shows a 10 KB error, this is the right tool.
Will the signature still look clear at 10 KB?
Yes, if the original is well-lit with dark ink on white paper. A dark blue or black pen on clean white gives the best result after compression. Faint or grey signatures may lose legibility.
What format should I use for a 10 KB signature?
JPEG is best for hitting very low file sizes. This tool outputs JPEG automatically. PNG files at 140x60 will almost always exceed 10 KB, so do not try to submit a PNG to a 10 KB portal.
Do I also need to resize my photo for the same portal?
Most likely yes. If your portal requires a 10 KB signature, it usually has a separate photo size requirement too. Check whether you need UPSC Photo or any of the exam photo tools.

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