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    Topic:   Thumbnail generation  

    This topic contains 5 replies, has 3 voices, and was last updated by  jamesl 7 months, 3 weeks ago.

    Viewing 6 posts - 1 through 6 (of 6 total)
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    • #10008

      jamesl
      Participant

      19 posts

      Hello all,

      How does thumbnail generation work in Kiwitrees 3..0? (Yes, I know I should upgrade!)
      There does not seem to be an option on the media configuration page for automatic generation of thumbnails, so is this the default? If so, it doesn’t seem to be working because no thumbnail is available for an image I just uploaded (the image itself displays correctly). Is there a manual way of generating the thumbnail?

      James

      #10009
      kiwi
      kiwi
      Keymaster

      1655 posts

      Hi James

      Yes, thumbnails are automatically generated.
      It is 95% certain your image is too “big” for your server to create a thumbnail. Note that “big” does not refer to the file size. To create a satisfactory thumbnail the original image, most likely a compressed file such as jpg/jpeg, needs to be uncompressed on your web server. A typical modern digital camera/smartphone image might explode to 30MBs when uncompressed, even though the file size might only be 2MB or less.
      You should have an error message to confirm this is the problem (administration > site administration > logs – filter for “errors”).

      Alternative causes can be linking to an external image or using a pdf file, neither of which can be converted to thumbnails. In these cases, you can include your own manually generated thumbnail copy at the same time you upload the original.

      Nigel
      My personal kiwitrees site is www.our-families.info
      #10010

      jamesl
      Participant

      19 posts

      Thanks for the reply Nigel.
      There was no corresponding error message in the log file.
      The file is a jpeg image, not a pdf file.

      I ended up producing a thumbnail image by hand (100px wide) and uploading it to the server. This worked fine, but I still don’t understand what prevented Kiwitrees from generating the thumbnail. The original image was only 175KB so even if it had been highly compressed I don’t see how uncompressing it would cause a problem.

      James

      #10011
      kiwi
      kiwi
      Keymaster

      1655 posts

      If you send me the original file I’ll take a look and see what might cause it.

      Nigel
      My personal kiwitrees site is www.our-families.info
      #10037

      jacoline
      Participant

      463 posts

      I have tried that too. (was a batch running while I uploaded a media – it just happens sometimes). I made an edit of the image like changing type or folder and then it was created when I checked the ID which had the imagefile linked

      Regards,
      Jamie Jaconelli

      admin and owner of:
      www.jaconelli.dk/webtrees, www.jaconelli.dk/history, www.familien-johnsen.dk(submenu) and danish support at www.host-siden.dk/sandbox and facebook

      #10038

      jamesl
      Participant

      19 posts

      Thanks for your comment.
      After chasing around for some time, and some helpful suggestions from Nigel, It turned out that my problem was caused by having incorrect access permissions on the “thumbs” folder. Once I corrected the access permission on the directory everything worked fine. I was running Kiwitrees on my local machine for testing purposes so I can’t blame my web hosting service!

      Regards,

      James

    Viewing 6 posts - 1 through 6 (of 6 total)

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