Photolisa · color and tone

Levels Adjustment

Levels adjustments set black, white and midtone reference points.

Image tool workspace

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

Understanding levels adjustment

Levels adjustments set black, white and midtone reference points.

Use the histogram to locate data and avoid moving endpoints past useful image detail.

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

  • Black point
  • White point
  • Gamma

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 levels adjustment?

Use the histogram to locate data and avoid moving endpoints past useful image detail.

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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