diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..1100de0
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,13 @@
+# Configuration file for EditorConfig.
+# More information is available under <https://editorconfig.org/>.
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+max_line_length = 80
diff --git a/CONTRIBUTING.adoc b/CONTRIBUTING.adoc
new file mode 100644
index 0000000..505e813
--- /dev/null
+++ b/CONTRIBUTING.adoc
@@ -0,0 +1,18 @@
+== How to contribute
+
+=== Reporting bugs or suggesting enhancements
+
+Before reporting a bug, please
+https://schlomp.space/tastytea/remwharead/issues[perform a search] to see if the
+problem has already been reported. If it has, add a comment to the existing
+issue instead of opening a new one. Same for enhancements.
+
+You can also contact me via mailto:tastytea@tastytea.de[E-Mail],
+link:xmpp:tastytea@tastytea.de[XMPP] or the
+https://likeable.space/users/tastytea[Fediverse] if you don't want to open an
+account.
+
+=== Pull requests
+
+Please use similar coding conventions as the rest of the project. The basic rule
+to remember is to write code in the same style as the existing/surrounding code.
diff --git a/README.adoc b/README.adoc
index 0240251..165be63 100644
--- a/README.adoc
+++ b/README.adoc
@@ -124,6 +124,9 @@ can install it from
 https://addons.mozilla.org/en-US/firefox/addon/remwharead/[addons.mozilla.org]
 or build it yourself with `build_xpi.sh`.
 
+// Not possible yet. <https://github.com/go-gitea/gitea/issues/6359>
+// include::CONTRIBUTING.adoc[]
+
 == Copyright
 
 The icons of the plugins are from the