diff --git a/.gitignore b/.gitignore
index 720bc04b2..1c7721b87 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,8 @@
 .bundle
 .sass-cache
 _site
-_img
+_img/posts/*.jpg
+_img/posts/*.png
 Gemfile.lock
 .idea/*
 npm-debug.log
diff --git a/_img/posts/.gitkeep b/_img/posts/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/_img/posts/README.md b/_img/posts/README.md
new file mode 100644
index 000000000..38cfab7e6
--- /dev/null
+++ b/_img/posts/README.md
@@ -0,0 +1 @@
+If you would like to generate images for your post, place them in this directory. You should also run `gulp img` from the command line, so that the images are generated with the right naming conventions for different. If you want more details, please check `gulpfile.js` line `167`.