Photolisa · compression

PNG Compressor

PNG compression reduces bytes through lossless encoding or deliberate palette reduction.

Image tool workspace

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

Compare encoding at the same dimensions

Static educational examples. These illustrations do not process your files or represent output from an unfinished tool.

Landscape illustration encoded with higher JPEG quality
Higher quality sample. Inspect the roof edges and smooth sky.
Same landscape with stronger JPEG compression and visible edge artifacts
Lower quality sample at identical dimensions. A smaller byte count can discard visible detail.

Understanding png compressor

PNG compression reduces bytes through lossless encoding or deliberate palette reduction.

Lossless optimization preserves pixels. Reducing colors can change gradients and transparent edges.

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

  • Quality (%)
  • PNG encoding
  • Palette colors

20 MB input and 16 megapixels maximum. Static conversion uses the first image frame or page. JPG/BMP/EPS do not retain alpha. Lossless conversion cannot recover detail already discarded by the source. Specialized HEIC, document and camera decoders must be installed on the deployment.

Questions about this task

Where do I use the current tool?

Decode the actual source file and encode the selected destination on the Photolisa server.

What should I check for png compressor?

Lossless optimization preserves pixels. Reducing colors can change gradients and transparent edges.

Which settings and formats are confirmed?

Destination file. 20 MB input and 16 megapixels maximum. Static conversion uses the first image frame or page. JPG/BMP/EPS do not retain alpha. Lossless conversion cannot recover detail already discarded by the source. Specialized HEIC, document and camera decoders must be installed on the deployment.

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