diff --git a/crawler/normalize-image-urls.sh b/crawler/normalize-image-urls.sh
new file mode 100755
index 0000000000..ee045b1df6
--- /dev/null
+++ b/crawler/normalize-image-urls.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+set -e -u -x
+
+cat $1 | sed 's:/thumb\(/.*\)/[0-9][0-9]*px-.*$:\1:' | sort -u > $2
diff --git a/crawler/wikitravel-crawler.sh b/crawler/wikitravel-crawler.sh
index 58fd1a2f3f..dee0e843a1 100755
--- a/crawler/wikitravel-crawler.sh
+++ b/crawler/wikitravel-crawler.sh
@@ -28,6 +28,8 @@ cat wikitravel-pages.json | python $MY_PATH/wikitravel-optimize-articles.py
 
 $MY_PATH/extract-image-urls.sh wikitravel-images.urls
 
-wget --wait=1 --no-clobber -i wikitravel-images.urls
+$MY_PATH/normalize-image-urls.sh wikitravel-images.urls wikitravel-images-normalized.url
+
+wget --wait=1 --random-wait --no-clobber -i wikitravel-images-normalized.urls
 
 # TODO: Run publisher.