diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..825df84
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,22 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = tab
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.rb]
+indent_style = space
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[_testdata/**]
+charset = unset
+indent_size = unset
+indent_style = unset
+trim_trailing_whitespace = unset