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Apps with 'Image comparison' feature

  1. Compress and compare images with different codecs, right in your browser. Squoosh is an image compression web app that allows you to dive into the advanced options provided by various image compressors like OxiPNG, MozJPEG and JPEG XL.
  2. Geeqie is a lightweight Gtk+ based image viewer for Unix like operating systems. It was forked from GQview.
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  3. P4Merge uses color coding to allow users to visualize the differences between file or images. It allows three-way merging among files, and shows side-by-side file/image comparison.
    • Mac
    • Windows
    • Linux
    • Online
    Diff Checker is a free online diff tool that quickly and easily gives you the text differences between two files.
  4. PhotoSweeper helps photographers get rid of tones similar photos on OS X. PhotoSweeper lets you: • Compare photos to find similar/duplicate photos using one of 6 different methods • Add photos from your iPhoto,...
  5. Find Duplicate Photos with Image Comparer - Duplicate Photo Finder software. The program is able to detect even resized or rotated duplicate photos due to advanced comparison algorithm
  6. PictureRelate compares pictures by similarity. Of course computers can't understand what's in a picture. Pattern recognition and image analysis has tried for many decades and has failed, so far. But there are some basic image properties that can be analyzed by a computer.


    The alpha pre-release on the website is from 2012. No new releases since then.