How do I resize my signature to 20KB?

Upload a photo of your signature. The limit is already 20KB and background clean-up is on, so click Compress and download the JPG.

How do I get the signature under 10KB?

Click the 10 KB button before compressing. With a white background, most signatures fit easily in 10KB.

The form wants the signature in a specific pixel size. Can I set it?

Yes. Choose Pixels and enter the width and height from the form. The image is centre-cropped to that shape, so photograph the signature with a little margin around it.

My signature looks faint after clean-up. What should I do?

Very light pen strokes can be mistaken for background. Sign again with a darker pen, or switch Whiten background off.

Is my signature uploaded anywhere?

No. The image is processed entirely in your browser and never leaves your device.

Signature Resizer

Turn a phone photo of your signature into a clean JPG under 10-20KB for an online form. The paper background is whitened automatically, and you can set exact pixels or centimetres with DPI. Free, private, no signup.

Loading image tool...

Features

Preset to 20KB with background clean-up switched on
Makes grey or shadowed paper pure white
Exact size in pixels or centimetres, with DPI
Finds the highest quality that still fits the limit
Shows the final KB and dimensions before you download
100% private - the image never leaves your browser

Where You Need a Small Signature Image

Exam and Recruitment Forms

Most application forms ask for a scanned signature within a small KB range and fixed dimensions.

Bank and KYC Forms

Upload a clean signature image that matches the size the portal accepts.

Admission Forms

Colleges ask for the candidate signature alongside the photo, each with its own limit.

Documents and Letters

A clean white-background signature JPG is easy to place on letters and forms.

How to Get a Clean Signature Under 20KB

Take the photo

Sign with a black or dark blue pen on plain white paper.
Photograph it in good light, straight from above, so the signature fills most of the frame.
Avoid shadows from your phone or hand - the clean-up handles light grey, not dark shadows.

Resize and compress

Upload the photo. Whiten background is already on, which turns the paper pure white; plain white compresses to almost nothing, so more of the size budget goes to the signature itself. Enter the pixel or cm size from the form if it gives one, keep or change the KB limit, and compress.

Different limit? Type it in, or use Compress Image to KB. For the photo that goes with the signature, use Compress Image to 20KB or 50KB.

Form also asks for a thumb impression? Photograph your inked thumb and clean it up with the Thumb Impression Maker.