diff --git a/.gitattributes b/.gitattributes
index f89d1fc6fe4..429748b0d42 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,3 @@
 *.[ch] whitespace=tab-in-indent,trailing-space
-test/dmidecode-dumps/*.bin binary
+*.gpg  binary
+*.bmp  binary
diff --git a/docs/.gitattributes b/docs/.gitattributes
new file mode 100644
index 00000000000..07bb186e522
--- /dev/null
+++ b/docs/.gitattributes
@@ -0,0 +1,2 @@
+*.png    binary
+*.woff   binary
diff --git a/test/dmidecode-dumps/.gitattributes b/test/dmidecode-dumps/.gitattributes
new file mode 100644
index 00000000000..64294bde82c
--- /dev/null
+++ b/test/dmidecode-dumps/.gitattributes
@@ -0,0 +1 @@
+/*.bin binary
diff --git a/test/journal-data/.gitattributes b/test/journal-data/.gitattributes
new file mode 100644
index 00000000000..c04df17b598
--- /dev/null
+++ b/test/journal-data/.gitattributes
@@ -0,0 +1,2 @@
+# Journal data in export format
+/*.txt  binary
diff --git a/test/test-resolve/.gitattributes b/test/test-resolve/.gitattributes
new file mode 100644
index 00000000000..e4b1e295d60
--- /dev/null
+++ b/test/test-resolve/.gitattributes
@@ -0,0 +1 @@
+/*.pkts  binary