What does the checker detect?

Image-based signatures inserted as overlays, inconsistent DPI, and mis-aligned signature fields.

Is this forensic-grade analysis?

No — it provides heuristic risk signals, not court-admissible forensic results.

No. Everything runs locally in your browser.

Process files up to the browser memory limit.

A score above 80 indicates strong signs of image-based signature manipulation.

Detect copy-paste signatures and image overlays in PDF documents. Processed entirely in your browser for 100% data privacy an

Your files never leave your device. Processed locally. 100% private.

Unlocking Tool Engine...

Complete your task perfectly in just three straightforward steps.

Drop your PDF file.

The tool scans for image-layer signatures and inconsistencies in signature fields.

A report highlights suspicious signatures with a forgery risk score.

Continue working with our suite of free data utilities.

Compare two CSV files and highlight added, removed, and changed rows. Securely process files in your browser memory with zero

Compare two versions of any text file (JSON, XML, Code)

Find and remove duplicate rows from CSV files based on selected key columns. The safest way to process sensitive data with ze