Make a Signature for an Online Form

Why forms reject your signature

Online forms are fussy about the signature you upload: a phone photo is too big, full of grey paper, and the wrong dimensions, so the form bounces it for being over the size limit or 'not a clear signature'. The fix is to crop to just the ink, clean off the background, and resize to what the form wants.

This tool does all of that in one place. Drop in a photo or scan, the paper drops away, faint pen strokes are deepened, the margins are trimmed automatically, and you set the exact pixel size and file size the form specifies — then download.

How to prepare a signature for a form

1. Open your signature. Snap or scan your signature on white paper, then drag it onto the tool, choose a file, or paste it.
2. Clean it up. Keep 'Remove background' on and nudge the threshold until only the ink shows. Boost faint ink if needed.
3. Set the size. Choose the width or fit the form asks for, and a target file size such as 50 KB.
4. Download. Save a transparent PNG, or a white-background JPG if the form requires one.

Read the form's requirements first

Look for the accepted dimensions (often given in pixels) and the maximum file size (often 10–50 KB) before you start. Set those exact values in the Resize and Target file size controls so the upload is accepted on the first try.