Photolisa · extract

Signature Extractor

Signature extraction isolates a handwritten mark from a scanned or photographed background.

Image tool workspace

Enable JavaScript to use the processing controls. Tool instructions and limitations are available below.

Understanding signature extractor

Signature extraction isolates a handwritten mark from a scanned or photographed background.

Check thin strokes on light and dark backgrounds and use only signatures you are authorized to handle.

A practical workflow

  1. Choose the required source files, if any. Files are handled as stated in the workspace privacy label.
  2. Set the available controls and apply the operation.
  3. Compare the actual output, check its dimensions and download the generated file.

Decisions and limitations

  • Brightness threshold
  • Secondary color

Images up to 16 megapixels and 20 MB. Keep an original copy. Export preserves pixels, not editable layers or original metadata.

Questions about this task

Where do I use the current tool?

Apply the selected adjustment and export a PNG copy.

What should I check for signature extractor?

Check thin strokes on light and dark backgrounds and use only signatures you are authorized to handle.

Which settings and formats are confirmed?

PNG. Images up to 16 megapixels and 20 MB. Keep an original copy. Export preserves pixels, not editable layers or original metadata.

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