JPG仅在Android中加载

Question

I have been resampling images via imagemagick on a windows machine. Vast majority work fine however there are one or two images that won't load on any android device. I thought it was my java app code that was broken but I can reproduce it in Chrome on the Android device too.

The images load fine on iOS/PC/Mac only just not on android. It's only 320x44 pixels in 10Kb of data and not seeing any error messages, can anyone shed some light on what I may have done (or steps I've missed) when using imagemagick to get this to work?

Here's the link to the JPG

http://gatherhelp.com/tests/corruptjpg/broken.jpg

UPDATE I've used 'Charles' to intercept the network traffic from the phone and view this request and that too shows I am indeed being delivered a white image as a response to this URL from the android.

I'm using PHP on the server but JPG files are not processed, merely straight through file served

Answer 1

I know it's poor form to answer your own question but just in case this helps anyone else... It appears that the issue was I converted some PSD and other files that were originally made for printing and had the CMYK color format instead of RGB.

To find this out I used ImageMagick's Identify command and did this

   Identify -verbose broken.jpg

giving

Image: broken.jpg
  Format: JPEG (Joint Photographic Experts Group JFIF format)
  Class: DirectClass
  Geometry: 256x256+0+0
  Resolution: 250x250
  Print size: 1.024x1.024
  Units: PixelsPerInch
  Type: ColorSeparation
  Endianess: Undefined
  Colorspace: CMYK
  Depth: 8-bit

This showed the colorspace was CMYK so a quick test of the other broken images showed they all had the same issue. To convert them again ImageMagick to the rescue and used

   convert broken.jpg -colorspace RGB fixed.jpg

So it appears iOS/PC/Mac all support JPEGs that have CMYK but Android appears not to or at least not all CMYK images (As of Android 4.2)