Photolisa · masks and layers

PNG Alpha Channel Editor

Alpha channel editing changes per pixel transparency in a PNG image.

Image tool workspace

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

Understanding png alpha channel editor

Alpha channel editing changes per pixel transparency in a PNG image.

Inspect partially transparent edges against several background colors.

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 png alpha channel editor?

Inspect partially transparent edges against several background colors.

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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