Resize a signature for an online form
Exam, bank and government forms often want the signature at an exact size like 140 × 60 or 280 × 120 pixels and under 10 to 20 KB. Morph makes a JPG that matches both.
How to do it
Photograph or scan the signature
Black or blue ink on white paper, filling most of the frame.
Set the photo size and the size limit
In Morph's Settings, pick Signature, small (140 × 60) or large (280 × 120), or type the form's size, then set the KB limit, like 20 KB.
Choose Resize
The signature is cropped to exactly that size and saved as a JPG under the limit.
Where it works
- Mac Yes.
- Windows Yes.
- iPhone and iPad Yes.
- Android Yes.
Free and open source. Everything runs on your device: no uploads, no account, no ads, and your originals are never changed.
Get Morph
Mac
macOS 14 or later, Apple Silicon or Intel. The App Store beta is on TestFlight; it's early and still has bugs.
Download for Mac Mac App Store betaAndroid
Android 10 or later. Out for everyone on Google Play around 11 November 2026.
Join the Google Play testiPhone and iPad
iOS 17 or later. On the App Store around 11 November 2026; try the beta now with TestFlight (expect a few bugs).
Join the TestFlight betaQuestions
My signature got cut off. What now?
Morph crops to fill the size, so leave a little space around the signature, and crop the photo to roughly the right shape first if it's very tall or wide.
Can I do the photo and the signature together?
Do them one after the other: they need different sizes, so change Photo size in between.