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PNG EXIF display is implemented in FastRawViewer 1.5.0 Beta2 (build 1464).

Note: EXIF data in PNG files is stored after image section and PNG format is built for sequential access (only forward). So it is not possible to extract EXIF data from PNG without full image section decompress (this is slow for large images).

So:

  1. In Single file view mode  EXIF data is displayed for PNG files
  2. In Grid mode it displayed only if thumbnail is not fetched from Thumbnails cache, but created from PNG file
  3. It is not possible to sort PNG files on EXIF timestamp because metadata extraction tooks too long time (b/c of full decode) for these files.