Compare two signatures

Upload two high-resolution, cropped images (JPG or PNG, up to 15 MB each). Each signature is located, cleaned and measured, and you get a qualified report that shows what agrees, what differs and why.

A Questioned / first signature

Choose or drop a JPG / PNG

B Reference / second signature

Choose or drop a JPG / PNG

Case / reference (optional)

I am authorised to process these images and understand the report is an automated, indicative assessment.

For the most reliable result

Scan at 400–600 dpi (or photograph flat, in even light, filling the frame). The signature should be at least ~150 px tall.
Prefer PNG or a high-quality JPG; avoid screenshots, faxes and photocopies of photocopies.
Crop tightly around the signature, or use the selection tool above. Exclude printed names, stamps and other handwriting.
Compare like with like: full signature with full signature, signed in a similar context and period.
Forensic examiners use several known (reference) signatures to judge natural variation. A single comparison is inherently limited.