diff --git a/README.md b/README.md
index 58b2dc1..314e2cb 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,12 @@ Detected file extensions
 
 - `.pkg`
 - `.prj`
+- `.tcf`
+- `.tbc`
+- `.xam`
+- `.ppd`
+- `.gcd`
+- `.mask`
 - `.trf` (view only, no diff)
 
 ## Getting started
diff --git a/src/types.ts b/src/types.ts
index c0107bf..f830f34 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,4 +1,4 @@
-export const SUPPORTED_DIFF_FILES = ['pkg', 'ta', 'prj'];
+export const SUPPORTED_DIFF_FILES = ['pkg', 'ta', 'prj', 'xam', 'ppd', 'mask', 'gcd', 'tcf', 'tbc'];
 export const SUPPORTED_FILES = [...SUPPORTED_DIFF_FILES, 'trf'];
 
 export type HostInfo = {
diff --git a/static/icons/gcd.png b/static/icons/gcd.png
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diff --git a/static/icons/mask.png b/static/icons/mask.png
new file mode 100644
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diff --git a/static/icons/ppd.png b/static/icons/ppd.png
new file mode 100644
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diff --git a/static/icons/tbc.png b/static/icons/tbc.png
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diff --git a/static/icons/tcf.png b/static/icons/tcf.png
new file mode 100644
index 0000000..f96add3
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diff --git a/static/icons/xam.png b/static/icons/xam.png
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index 0000000..1ed75a2
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