Photolisa · Image tools directory

Image Comparison

Compare versions at the same dimensions and scale to judge changes in crop, tone, compression or detail.

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Compare Images

Image comparison places versions together to inspect visible differences.

Available

Tools in this category

Existing tools and tools in development are labeled separately

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Compare Images

Image comparison places versions together to inspect visible differences.

Available

Plan a image comparison workflow

Different color management, orientation or dimensions can create differences unrelated to the intended edit. A visual comparison is distinct from an exact file hash.

Decisions before you begin

  • Reference and comparison image
  • Alignment and scale
  • Difference viewing method

Prepare the task

  1. Select versions that show the same content.
  2. Align their frame and display scale before inspecting changes.
  3. Check the regions relevant to the task rather than relying on a single similarity impression.

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