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  1. Confluence Data Center
  2. CONFSERVER-9907

Thumbnail macro doesn't support transparency in GIF and PNG images

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    Description

      The thumbnail macro renders transparent backgrounds as black, for GIF images.

      PNGs are fine, and JPG doesn't support transparency anyway, so GIF is the only affected format.
      A quick-and-dirty interim workaround would be to change the default to a white background, as that would reduce the impact of the issue.

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        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. CONFSERVER-20025 Image background color changes from black to white when changing size for transparent images

          • Low - Low priority issues
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. CONFSERVER-14286 Image thumbnail does not preserve PNG image transparency

          • Medium - Medium priority issues
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. CONFSERVER-12424 Gallery macro displays the wrong thumbnail when two attachments share the same filename but different file types.

          • Low - Low priority issues
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. CONFSERVER-13532 GIF/PNG transparency lost in Avatar resizing, makes my head look funny

          • Low - Low priority issues
          • Closed

          Suggestion - CONFSERVER-9988 Prevent images without background from turning to a black background while using the gallery macro

          • Closed
          is superseded by

          Suggestion - CONFSERVER-21480 Fix the Thumbnail rendering that fails for transparent images (PNG/GIF) and for certain images with embedded color profiles (CMMException)

          • Closed
          relates to

          Suggestion - CONFSERVER-9977 Thumbnails for interlaced gifs are broken

          • Closed

          Activity

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              Unassigned Unassigned
              jfleming James Fleming (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: