Signature Resizer
Drop a signature image, size it to a signature box on a white background, adjust brightness and contrast to clean it up, then download. All in your browser.
1. Photo & spec
Canvas · localDrop a photo here
or click to browse · or paste with Ctrl/Cmd + V
Background
Tip: drag the preview to position the face within the frame.
2. Preview & export
—About Signature Resizer
The Signature Resizer sizes a signature image to a signature-box shape on a white background and offers brightness and contrast adjustment to clean up the scan. It is for preparing a signature for forms and applications.
Scanned or photographed signatures are often grey or oversized for a form’s box. Cleaning and sizing one in the browser produces a tidy result without uploading it.
Step by step
- Drop a scan or photo of your signature.
- The image is sized to a signature-box shape on white.
- Adjust brightness and contrast to darken the ink and clear the background.
- Review the cleaned signature.
- Download the result.
What it offers
- Signature-box sizing on white
- Brightness and contrast cleanup
- Live cleanup preview
- Processed locally — Signature Resizer
Tips for best results
- Confirm the size and format the specific form requires before submitting; this tool cannot guarantee acceptance.
- Sign in dark ink on plain white paper for the cleanest scan.
- Increase contrast just until the background is white without breaking up the strokes.
Why people use it
Form-ready
Fit the signature to the expected box shape.
Cleaner ink
Brightness and contrast remove grey scan haze.
Private
The signature is processed on your device.
Simple
No editor needed to tidy a signature.
Common questions
This runs entirely in your browser
No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.