Resize Signature for PDF Form Box
Use this when your signature is too big for the form box. Pick a preset or custom size, keep aspect ratio, and download a PNG.
Files stay on your device.This tool processes your file in the browser. Nothing is uploaded to a server.
How to use this tool
- Drop a PNG or JPG signature image below.
- Choose a signature box preset or set width and height.
- Preview and download a resized PNG for your form.
Accepted files: PNG or JPG signature images. Phone photos and scans are fine.
Drop a signature image
PNG with a transparent background works best. JPG scans are fine too.
Your file never leaves this browser
Scanned on white paper? Remove the background first, then resize.
Frequently asked questions
My signature is too big for the PDF form box — what do I do?
Resize here with aspect ratio preserved, then paste or upload the PNG on your form.
Will my signature be stretched?
Not with “Pad to fit” enabled. The image scales uniformly and centers in the box.
Can I remove a white paper background?
Yes, optionally in this tool—or use Remove Signature Background for more control.
Is the image uploaded?
No. Resizing uses the Canvas API in this tab.