diff --git a/Tuprules.tup b/Tuprules.tup
index 5c1360e..bfe80e7 100644
--- a/Tuprules.tup
+++ b/Tuprules.tup
@@ -12,3 +12,7 @@ HTML_TEMPLATE = main.html
 	--include-after-body=&(root)/templates/footer.html \
 	%f | sed 's|%%webRoot%%|&(root)|g' > %o \
 	|> %B.html
+
+!compress_png = |> zopflipng %f %o |>
+!compress_jpg = |> cjpeg -quality 80 -progressive -outfile %o %f |>
+!thumbnail = |> convert %f -resize 400x400 -blur 0x8 %o |>
diff --git a/projects.md b/projects.md
index 6d96e1b..083294b 100644
--- a/projects.md
+++ b/projects.md
@@ -8,5 +8,5 @@ title: Projects
 <li><a href="projects/trailr/index.html" style="background-image: url(projects/trailr/thumb.jpg);">Trailr</a></li>
 <li><a href="projects/whereiscar/index.html" style="background-image: url(projects/whereiscar/thumb.png);">Where is my car?</a></li>
 <li><a href="projects/maestro/index.html" style="background-image: url(projects/maestro/thumb.png);">Maestro</a></li>
-<li><a href="projects/dawnchaos/index.html" style="background-image: url(projects/dawnchaos/thumb.png);">Dawn of Chaos</a></li>
+<li><a href="projects/dawnchaos/index.html" style="background-image: url(projects/dawnchaos/thumb.jpg);">Dawn of Chaos</a></li>
 </ul>
diff --git a/projects/dawnchaos/Tupfile b/projects/dawnchaos/Tupfile
index 2ba7d0a..015e3ae 100644
--- a/projects/dawnchaos/Tupfile
+++ b/projects/dawnchaos/Tupfile
@@ -1,4 +1,6 @@
 include_rules
 
 : index.md |> !html |>
-: thumbnail.png |> convert %f -blur 0x8 %o |> thumb.png
+: shot_01.png |> !thumbnail |> thumb_temp.jpg
+: thumb_temp.jpg |> !compress_jpg |> thumb.jpg
+: foreach *.png |> !compress_png |> %g_opt.png
diff --git a/projects/dawnchaos/thumbnail.png b/projects/dawnchaos/thumbnail.png
deleted file mode 100644
index 1952fd0..0000000
Binary files a/projects/dawnchaos/thumbnail.png and /dev/null differ
diff --git a/rsync_excludes.txt b/rsync_excludes.txt
index 9c6301c..fa60237 100644
--- a/rsync_excludes.txt
+++ b/rsync_excludes.txt
@@ -1,3 +1,4 @@
 templates*
 tup.config
 README.html
+*_temp.*