diff --git a/document/preview-edit.png b/document/preview-edit.png
new file mode 100644
index 00000000..f47c21a9
Binary files /dev/null and b/document/preview-edit.png differ
diff --git a/document/preview-main.png b/document/preview-main.png
new file mode 100644
index 00000000..e1ee2d2b
Binary files /dev/null and b/document/preview-main.png differ
diff --git a/document/preview-mobile.png b/document/preview-mobile.png
new file mode 100644
index 00000000..8b2cd0f8
Binary files /dev/null and b/document/preview-mobile.png differ