What is the standard size for signatures in Indian exam portals?

Most exam portals (like UPSC and SSC) require signatures to be exactly 140 pixels wide by 60 pixels high (140x60 px) and file size under 20KB in JPEG format.

How does the signature contrast booster work?

The signature contrast tool filters the pixels locally. It increases background brightness to turn grey/shadowed paper pure white, and darkens the pen strokes to make the signature clear and scannable.

Signature Resizer & Contrast Optimizer

Format your signature scan to standard exam specifications (140x60 pixels, under 20KB) online. Boost ink contrast and whiten grey/dim paper backgrounds instantly in your browser.

Click, Drag & Drop or Paste Signature Here

Select your signature photo or scan (Max 10MB)

Adjustment Sliders

Preset Dimensions

Paper Background Whiteness

Slide right to remove shadows and whiten paper.

Ink Darkness / Sharpness

Slide right to darken blue/black pen strokes.

Zoom Adjust

How to Resize and Whiten Signature Online

When uploading signatures to official portals like UPSC (Union Public Service Commission) or SSC (Staff Selection Commission), applications frequently get rejected because the photo was taken in a dark room, making the white paper appear grey or shadow-ridden. Our **Signature Resizer** includes a built-in contrast optimizer. When you increase the **Paper Background Whiteness** slider, the local canvas pixel processing raises low luminance thresholds, converting grey background shadows to pure white. At the same time, the **Ink Darkness** slider filters dark pen strokes to make blue or black ink look bold, sharp, and perfectly scannable.

Signature Specifications Checklist

File Size Limit: Must be strictly under 20KB.
Dimensions (Standard): exactly 140 pixels width × 60 pixels height.
Pen ink: Blue or Black ink only drawn on clean white paper.

Frequently Asked Questions

What happens if my original image has vertical rotation?

You can drag the signature freely within the crop boundary box to align it correctly, and use the zoom slider to scale it so it fills the 140x60 crop window.

Are signature uploads saved on ToolForYou servers?

No. Your signature is parsed, cropped, contrast-boosted, and compressed 100% locally inside your web browser. None of your files are uploaded to our servers.