diff --git a/cbz/cbz_creator.go b/cbz/cbz_creator.go
index 175a3bd..d4f2073 100644
--- a/cbz/cbz_creator.go
+++ b/cbz/cbz_creator.go
@@ -30,10 +30,10 @@ func WriteChapterToCBZ(chapter *manga.Chapter, outputFilePath string) error {
 		var fileName string
 		if page.IsSplitted {
 			// Use the format page%03d-%02d for split pages
-			fileName = fmt.Sprintf("page_%04d-%02d%s", page.Index, page.SplitPartIndex, page.Extension)
+			fileName = fmt.Sprintf("%04d-%02d%s", page.Index, page.SplitPartIndex, page.Extension)
 		} else {
 			// Use the format page%03d for non-split pages
-			fileName = fmt.Sprintf("page_%04d%s", page.Index, page.Extension)
+			fileName = fmt.Sprintf("%04d%s", page.Index, page.Extension)
 		}
 
 		// Create a new file in the ZIP archive
diff --git a/cbz/cbz_creator_test.go b/cbz/cbz_creator_test.go
index c0337d4..f015514 100644
--- a/cbz/cbz_creator_test.go
+++ b/cbz/cbz_creator_test.go
@@ -31,7 +31,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 				IsConverted:   true,
 				ConvertedTime: time.Now(),
 			},
-			expectedFiles: []string{"page_0000.jpg", "ComicInfo.xml", "Converted.txt"},
+			expectedFiles: []string{"0000.jpg", "ComicInfo.xml", "Converted.txt"},
 		},
 		//test case where there is only one page and no
 		{
@@ -45,7 +45,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 					},
 				},
 			},
-			expectedFiles: []string{"page_0000.jpg"},
+			expectedFiles: []string{"0000.jpg"},
 		},
 		{
 			name: "Multiple pages with ComicInfo",
@@ -64,7 +64,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 				},
 				ComicInfoXml: "<Series>Boundless Necromancer</Series>",
 			},
-			expectedFiles: []string{"page_0000.jpg", "page_0001.jpg", "ComicInfo.xml"},
+			expectedFiles: []string{"0000.jpg", "0001.jpg", "ComicInfo.xml"},
 		},
 		{
 			name: "Split page",
@@ -79,7 +79,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 					},
 				},
 			},
-			expectedFiles: []string{"page_0000-01.jpg"},
+			expectedFiles: []string{"0000-01.jpg"},
 		},
 	}
 
diff --git a/cmd/optimize_command_test.go b/cmd/optimize_command_test.go
index f7f532a..66b7886 100644
--- a/cmd/optimize_command_test.go
+++ b/cmd/optimize_command_test.go
@@ -17,17 +17,16 @@ import (
 // MockConverter is a mock implementation of the Converter interface
 type MockConverter struct{}
 
-func (m *MockConverter) Format() constant.ConversionFormat {
-	return constant.WebP
-}
-
-func (m *MockConverter) ConvertChapter(chapter *manga.Chapter, quality uint8, progress func(string)) (*manga.Chapter, error) {
-	// Simulate conversion by setting the IsConverted flag
+func (m *MockConverter) ConvertChapter(chapter *manga.Chapter, quality uint8, split bool, progress func(message string, current uint32, total uint32)) (*manga.Chapter, error) {
 	chapter.IsConverted = true
 	chapter.ConvertedTime = time.Now()
 	return chapter, nil
 }
 
+func (m *MockConverter) Format() constant.ConversionFormat {
+	return constant.WebP
+}
+
 func (m *MockConverter) PrepareConverter() error {
 	return nil
 }
@@ -79,6 +78,7 @@ func TestConvertCbzCommand(t *testing.T) {
 	cmd.Flags().Uint8P("quality", "q", 85, "Quality for conversion (0-100)")
 	cmd.Flags().IntP("parallelism", "n", 2, "Number of chapters to convert in parallel")
 	cmd.Flags().BoolP("override", "o", false, "Override the original CBZ files")
+	cmd.Flags().BoolP("split", "s", false, "Split long pages into smaller chunks")
 
 	// Execute the command
 	err = ConvertCbzCommand(cmd, []string{tempDir})