diff --git a/internal/files.go b/internal/files.go
index b4604aa..7a6dbc5 100644
--- a/internal/files.go
+++ b/internal/files.go
@@ -3,6 +3,8 @@ package internal
 import (
 	"fmt"
 	"os"
+	"path/filepath"
+	"strings"
 )
 
 const DefaultPath = "."
@@ -23,3 +25,31 @@ func CreateDirectoryIfDoesNotExists(directory string) error {
 
 	return nil
 }
+
+func validateContentType(contentType string, imageTypes []string) error {
+	if !strings.HasPrefix(contentType, "image") {
+		return fmt.Errorf("content type '%s' is not an image", contentType)
+	}
+
+	imageType := strings.Split(contentType, "/")[1]
+
+	for _, allowedImageType := range imageTypes {
+		if imageType == allowedImageType {
+			return nil
+		}
+	}
+
+	return fmt.Errorf("image type '%s' is not allowed", imageType)
+}
+
+func addExtensionIfMissing(filePath, contentType string) string {
+	extension := filepath.Ext(filePath)
+
+	if extension != "" {
+		return filePath
+	}
+
+	extension = "." + strings.Split(contentType, "/")[1]
+
+	return filePath + extension
+}
diff --git a/internal/http.go b/internal/http.go
index 53cef61..38b999e 100644
--- a/internal/http.go
+++ b/internal/http.go
@@ -6,8 +6,6 @@ import (
 	"math/rand"
 	"net/http"
 	"os"
-	"path/filepath"
-	"strings"
 	"time"
 
 	"golang.org/x/net/html"
@@ -59,34 +57,6 @@ func request(url, userAgent string) (*http.Response, error) {
 	return response, nil
 }
 
-func validateContentType(contentType string, imageTypes []string) error {
-	if !strings.HasPrefix(contentType, "image") {
-		return fmt.Errorf("content type '%s' is not an image", contentType)
-	}
-
-	imageType := strings.Split(contentType, "/")[1]
-
-	for _, allowedImageType := range imageTypes {
-		if imageType == allowedImageType {
-			return nil
-		}
-	}
-
-	return fmt.Errorf("image type '%s' is not allowed", imageType)
-}
-
-func addExtensionIfMissing(filePath, contentType string) string {
-	extension := filepath.Ext(filePath)
-
-	if extension != "" {
-		return filePath
-	}
-
-	extension = "." + strings.Split(contentType, "/")[1]
-
-	return filePath + extension
-}
-
 func DownloadImageFromUrl(url, filePath string, parameters Parameters) error {
 	response, err := request(url, parameters.UserAgent)
 	if err != nil {