Skip to content
✅ Create your profile once — OnlineZone matches you with eligible government jobs and forms
Call the shop Create Free AccountSign up

Signature Resizer

Resize a scanned signature to the size an online form expects.

Runs in your browser

Drop your files here

or

Choose files

Accepts JPG, PNG and WebP · up to 25 MB · up to 20 files

KB

Privacy. This tool works entirely inside your browser. Your file is never sent to us, never saved, and never seen by anyone else. Read how we handle files

Online application forms usually want a signature as a small, wide image, often around 140 x 60 pixels and only a few KB. A photograph taken on a phone is nothing like that: it is several thousand pixels across and a few megabytes, so the form rejects it.

This tool fixes both problems at once. Choose the dimensions your form asks for, and optionally a maximum file size, and you get an image that fits.

The quality of the result depends almost entirely on the photograph you start with. Sign in black or dark blue ink on plain white, unlined paper. Fill most of the sheet with the signature rather than writing it small. Photograph it from directly above in good daylight, not under a single bulb, so there is no shadow across the paper and no angle distorting the shape.

If the picture comes out grey or dim, run it through the brightness tool first and push the contrast up until the paper is white and the ink is solid black. A signature that is crisp before resizing stays readable afterwards; one that is already faint will not survive being shrunk.

How to use it

  1. Choose your files, or drag them onto the box above.
  2. Enter the width and height you need, then press resize.
  3. Download the result. Nothing is kept once you leave the page.

Files it accepts

  • JPG
  • PNG
  • WebP
  • Up to 25 MB per file
  • Up to 20 files at once

Questions

What size should a signature be for an online form?

140 x 60 pixels is the most commonly requested size, and many forms also cap the file at around 20 KB. Other forms ask for different numbers, so use whatever your own form states — the sizes in the list here are only the common ones.

My signature came out grey and faint.

Use the Image Brightness Adjuster first. Raise the contrast until the paper is clean white and the ink is solid, then come back and resize. Shrinking a faint signature makes it fainter.

Should I choose fit or fill for a signature?

Fit. A signature is wide and thin, so filling the frame would cut the ends off. "Fit the whole signature and pad with white" keeps all of it and adds white space around it, which is what a form expects.

Is this tool free?

Yes. Every tool here is free, and you do not need an account, an email address or a phone number.

Is my file uploaded to your server?

No. This tool runs inside your own browser, so the file never leaves your phone or computer. Once the page has loaded you can even switch off your internet connection and the tool will still work.

Which files can I use?

This tool accepts JPG, PNG and WebP. The largest file it will take is 25 MB.