diff --git a/.gitattributes b/.gitattributes
index 588d8d6e87..3cf9e8252b 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -27,3 +27,9 @@
 *.bz2 binary
 *.swp binary
 *.webp binary
+
+# Make GitHub not index certain files in the languages overview and minify their diff
+# See https://github.com/github/linguist/blob/master/docs/overrides.md
+__fixtures__ linguist-generated
+website linguist-documentation
+admin linguist-documentation
diff --git a/project-words.txt b/project-words.txt
index 121100fa1f..e3fa93bff9 100644
--- a/project-words.txt
+++ b/project-words.txt
@@ -287,6 +287,7 @@ vjeux
 waivable
 wcag
 webfactory
+webp
 webpackbar
 wolcott
 writeups