Photolisa · color and tone

Threshold Image

Thresholding converts tonal values into light and dark regions around a cutoff.

Image tool workspace

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

Understanding threshold image

Thresholding converts tonal values into light and dark regions around a cutoff.

Choose a cutoff that retains thin strokes when preparing line artwork or scanned text.

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

  • Strength (%)

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 threshold image?

Choose a cutoff that retains thin strokes when preparing line artwork or scanned text.

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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