How Signature Extractor handles a signature photo
A photographed signature is only the raw page. This page explains how the browser separates ink from paper, what the editor can and cannot infer, and what to review before a document leaves your hands.
A small tool for a consequential document step
Signature Extractor is a browser-first workspace for people who need a clean image of an authorized handwritten signature. Questions about the editor or this site can go to help@signatureextractor.com.
From a photographed page to a usable ink layer
The editor reads the selected file in the active tab, looks for the difference between paper and ink, and gives you a result to inspect before download. The signature photo is not sent to an image-processing server.
The AI mode uses the open-source BiRefNet Lite 512 model converted by Studio Ludens. The model is downloaded to the device, then produces a local mask. A later visit may reuse cached model files, but the result still depends on browser memory and the quality of the source photo.
Color edits for quieter scans
A dark mark on light paper can often be cleaned with the local color workflow. Adjust the tolerance slowly, compare the edge over light and dark backgrounds, and switch to the signature tool when folds, shadows, or mixed paper tones need more context.
The other pages show how to remove a signature background, how to make a transparent PNG for Word, how to place the visual mark in a PDF, and how to clean several authorized scans. Start with the page that matches the document waiting on your desk.
Read ink, margins, and authorization together
Thin strokes, blue ink, ruled lines, folds, and shadows can look like background. Inspect loops, crossings, dots, and the crop around the mark. Automatic trimming can remove unused transparent space, but it cannot decide whether you have permission to use the signature.
If a stroke is missing, lower the removal strength or use Restore after checking the original. Export at the size the document will show, then review the finished page rather than trusting a thumbnail.
Free to use, with the boundary in plain sight
The current editor has no account requirement, watermark, or per-image charge. You remain responsible for the source file, the signer’s permission, and the final document sent to someone else.
Guidance, privacy, and a human support route
Read the signature FAQ for practical answers, visit Contact support when the editor behaves unexpectedly, and review the privacy policy and terms of use before placing a result in a document.