diff --git a/core/match.go b/core/match.go
index abb5a2c..2884a4e 100644
--- a/core/match.go
+++ b/core/match.go
@@ -2,6 +2,7 @@ package core
 
 import (
 	"bytes"
+	"github.com/gabriel-vasile/mimetype"
 	"os"
 	"path/filepath"
 	"strings"
@@ -47,7 +48,17 @@ func IsSkippableDir(path string, baseDir string) bool {
 
 // IsSkippableFileExtension Checks if the file extension is blacklisted
 func IsSkippableFileExtension(path string) bool {
-	extension := strings.ToLower(filepath.Ext(path))
+	extension := ""
+	fileType, err := mimetype.DetectFile(path)
+	if err == nil {
+		extension = fileType.Extension()
+		GetSession().Log.Debug("File ext info %s, file path %s", extension, path)
+
+	} else {
+		GetSession().Log.Error("detect file content type error %s", err)
+		GetSession().Log.Error("error file path %s", path)
+	}
+
 	for _, skippableExt := range session.Config.BlacklistedExtensions {
 		if extension == skippableExt {
 			return true
diff --git a/go.mod b/go.mod
index ce519dc..13794ab 100644
--- a/go.mod
+++ b/go.mod
@@ -15,6 +15,7 @@ require (
 )
 
 require (
+	github.com/gabriel-vasile/mimetype v1.4.0 // indirect
 	github.com/Microsoft/go-winio v0.5.1 // indirect
 	github.com/Microsoft/hcsshim v0.9.2 // indirect
 	github.com/containerd/cgroups v1.0.3 // indirect
diff --git a/go.sum b/go.sum
index bc175da..1951fbc 100644
--- a/go.sum
+++ b/go.sum
@@ -349,6 +349,8 @@ github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fullsailor/pkcs7 v0.0.0-20190404230743-d7302db945fa/go.mod h1:KnogPXtdwXqoenmZCw6S+25EAm2MkxbG0deNDu4cbSA=
+github.com/gabriel-vasile/mimetype v1.4.0 h1:Cn9dkdYsMIu56tGho+fqzh7XmvY2YyGU0FnbhiOsEro=
+github.com/gabriel-vasile/mimetype v1.4.0/go.mod h1:fA8fi6KUiG7MgQQ+mEWotXoEOvmxRtOJlERCzSmRvr8=
 github.com/garyburd/redigo v0.0.0-20150301180006-535138d7bcd7/go.mod h1:NR3MbYisc3/PwhQ00EMzDiPmrwpPxAn5GI05/YaO1SY=
 github.com/getsentry/raven-go v0.2.0/go.mod h1:KungGk8q33+aIAZUIVWZDr2OfAEBsO49PX4NzFV5kcQ=
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -1016,6 +1018,7 @@ golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v
 golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLdyRGr576XBO4/greRjx4P4O3yc=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
+golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210520170846-37e1c6afe023/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210825183410-e898025ed96a/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=