diff --git a/internal/app/main.go b/internal/app/main.go
index dfd5f09..307fa72 100644
--- a/internal/app/main.go
+++ b/internal/app/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"log"
+	"net/http"
 	"os"
 	"path/filepath"
 	"time"
@@ -42,11 +43,10 @@ func readFilesFromFileStorePath(fileStorePath string) {
 		if err != nil {
 			log.Fatal(err)
 		}
-		fmt.Println(fileStat.Size())
 
 		fileInfo, err := file.Info() // This returns an os.FileInfo
 		if err != nil {
-			continue
+			log.Fatal(err)
 		}
 
 		// generate new StoredFileNode
@@ -65,12 +65,38 @@ func readFilesFromFileStorePath(fileStorePath string) {
 			newNode.IsFolder = true
 		}
 
+		if !file.IsDir() {
+			newNode.Extension = filepath.Ext(fullPath)
+
+			fileHandler, err := os.Open(fullPath)
+			if err != nil {
+				log.Fatal(err)
+			}
+			defer fileHandler.Close()
+
+			// Only need the first 512 bytes for mimetype detection
+			buffer := make([]byte, 512)
+			_, err = fileHandler.Read(buffer)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			// Always returns a valid MIME type, defaults to "application/octet-stream"
+			newNode.MimeType = http.DetectContentType(buffer)
+		}
+
 		shownNodes = append(shownNodes, newNode)
 	}
 
 	fmt.Println(shownNodes)
 }
 
+func init() {
+	// Lshortfile: prints "main.go:15"
+	// Llongfile: prints the full path "/path/to/main.go:15"
+	log.SetFlags(log.LstdFlags | log.Llongfile)
+}
+
 func main() {
 	err := godotenv.Load()
 	if err != nil {