diff --git a/pkg/txt/specialwords.go b/pkg/txt/specialwords.go
index ada6cb523..bcdb59a39 100644
--- a/pkg/txt/specialwords.go
+++ b/pkg/txt/specialwords.go
@@ -58,6 +58,10 @@ var SpecialWords = map[string]string{
 	"xmp":                "XMP",
 	"xml":                "XML",
 	"pdf":                "PDF",
+	"ps":                 "PS",
+	"postscript":         "PostScript",
+	"eps":                "EPS",
+	"svg":                "SVG",
 	"mov":                "MOV",
 	"avc":                "AVC",
 	"wto":                "WTO",