heroku-buildpack-imagemagick

Install

In your project root:

heroku buildpacks:add https://github.com/DinXZY/heroku-buildpack-imagemagick--index 1 --app HEROKU_APP_NAME

"index 1" means that imagemagick will be installed first.

Changing version

Go to https://www.imagemagick.org/download/releases and find a version you want (*.tar.gz). Edit the bin/compile file and change out the version number. Clear cache, as shown below, and redeploy your app to Heroku.

Clear cache

Since the installation is cached you might want to clean it out due to config changes.

heroku plugins:install heroku-repo
heroku repo:purge_cache -app HEROKU_APP_NAME

Note : Replace HEROKU_APP_NAME With Your App Name Ex. sticker-bot1