My apologies for this OT post, but I need some help from an &quot;image expert&quot; and PLUG has a diverse group of really smart people, so I thought I would take a chance. <br><br>When I upload images from a friend&#39;s digital camera, a Java web app is not able to create thumbnails (they appear black with the title of the image in the image area). However, clicking on the missing thumbnail renders the full image. When I upload images from a different camera, the same app generates the thumbnail and also renders the full image. Is there a special setting that camera&#39;s have to have set to allow thumbnails to be created? Both file types are jpeg. I am not seeing any error messages from the app. <br>
<br>I have the same problem with a Python based web app that displays thumbnails of images - all the thumbnails from the one digital camera are not rendered (ie white), but the full image is displayed when I click on the thumb nail. Images from other digital camera&#39;s display both thumbnails and full images. The only reason I mention this is that the Python app (obviously) does not use the same image rendering code to generate the thumbnails, so this leads me to believe the problem is with the image itself as opposed to the Java software. <br>
<br>I am not an &quot;image expert&quot;, but I hope there is someone on the list who might be able to enlighten me as to why some images do not render a thumbnail and what I can do about it. Is there some JPEG setting that prevents an app from generating a thumbnail?<br>
<br><div>Thanks!<br></div><div><br></div><div>Mark</div>