问题
Heroku does not support GD setup for jpg. Because of this I am not able to create collage out of profile pics, which are only in jpg format. I am having the same issue as the below link.
http://groups.google.com/group/heroku/browse_thread/thread/5f0b169272dd075f/5926d2e6eace859c?utoken=sizyOCkAAAD0zGxoh6dI3732ocaO_CKc0UdN2a4MLXn0dn7f9oF9dw34Femrnx-0ZHcOkI9yXY0
How do I resolve this issue?
回答1:
My alternative was to use imagick.so extension instead. See my reply @stackoverflow here for instruction how to get this extension up and running quickly. Let me know if this works (the few basic functions I tried are ok).
The official buildpack from Heroku doesn't list PHP. Strange.
回答2:
Heroku does support ImageMagick. I ran in to the GD/JPG problem hosting a WordPress site, but it was easily fixed by installing the imagemagick-engine plugin. Using it from the command line works with the path /usr/bin . The PHP module is not installed.
来源：https://stackoverflow.com/questions/8627701/lack-of-heroku-php-gd-setup-for-jpeg-files-causing-issues