Photolisa · Image tools directory

Image Compression Tools

Compare ways to reduce image bytes through encoding, quality, dimensions and palette choices. Use the existing compressor for its current controls; format specific tools are marked individually.

6 catalog entries · 5 destinations

Tools in this category

Existing tools and tools in development are labeled separately

6 tools shown

Plan a image compression tools workflow

Lossless compression preserves decoded pixel values but cannot promise an arbitrary byte target. Lossy compression discards information. Reducing dimensions is a separate change that can further reduce file size.

Decisions before you begin

  • Quality or lossless encoding
  • Target file size
  • Dimensions and palette size

Prepare the task

  1. Record the source dimensions and file size and identify the required upload limit.
  2. Compare a modest quality change before reducing dimensions or colors.
  3. Check actual output bytes and inspect text, gradients and transparent edges.

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