diff --git a/formatter/delimiter_formatter.go b/formatter/delimiter_transformer.go
similarity index 55%
rename from formatter/delimiter_formatter.go
rename to formatter/delimiter_transformer.go
index 80eafd6..3fd36a3 100644
--- a/formatter/delimiter_formatter.go
+++ b/formatter/delimiter_transformer.go
@@ -7,12 +7,12 @@ import (
 	"github.com/core-go/io/writer"
 )
 
-type DelimiterFormatter[T any] struct {
+type DelimiterTransformer[T any] struct {
 	Delimiter  string
 	formatCols map[int]writer.Delimiter
 }
 
-func NewDelimiterFormatter[T any](opts ...string) (*DelimiterFormatter[T], error) {
+func NewDelimiterTransformer[T any](opts ...string) (*DelimiterTransformer[T], error) {
 	sep := "|"
 	if len(opts) > 0 && len(opts[0]) > 0 {
 		sep = opts[0]
@@ -27,9 +27,12 @@ func NewDelimiterFormatter[T any](opts ...string) (*DelimiterFormatter[T], error
 	if err != nil {
 		return nil, err
 	}
-	return &DelimiterFormatter[T]{formatCols: formatCols, Delimiter: sep}, nil
+	return &DelimiterTransformer[T]{formatCols: formatCols, Delimiter: sep}, nil
+}
+func NewDelimiterFormatter[T any](opts ...string) (*DelimiterTransformer[T], error) {
+	return NewDelimiterTransformer[T](opts...)
 }
 
-func (f *DelimiterFormatter[T]) Format(ctx context.Context, model *T) string {
+func (f *DelimiterTransformer[T]) Transform(ctx context.Context, model *T) string {
 	return writer.ToTextWithDelimiter(model, f.Delimiter, f.formatCols)
 }
diff --git a/formatter/fixedlength_formatter.go b/formatter/fixedlength_formatter.go
deleted file mode 100644
index bd28571..0000000
--- a/formatter/fixedlength_formatter.go
+++ /dev/null
@@ -1,25 +0,0 @@
-package formatter
-
-import (
-	"context"
-	"github.com/core-go/io/writer"
-	"reflect"
-)
-
-type FixedLengthFormatter[T any] struct {
-	formatCols map[int]*writer.FixedLength
-}
-
-func NewFixedLengthFormatter[T any]() (*FixedLengthFormatter[T], error) {
-	var t T
-	modelType := reflect.TypeOf(t)
-	formatCols, err := writer.GetIndexes(modelType, "format")
-	if err != nil {
-		return nil, err
-	}
-	return &FixedLengthFormatter[T]{formatCols: formatCols}, nil
-}
-
-func (f *FixedLengthFormatter[T]) Format(ctx context.Context, model *T) string {
-	return writer.ToFixedLength(model, f.formatCols)
-}
diff --git a/formatter/fixedlength_transformer.go b/formatter/fixedlength_transformer.go
new file mode 100644
index 0000000..234551b
--- /dev/null
+++ b/formatter/fixedlength_transformer.go
@@ -0,0 +1,28 @@
+package formatter
+
+import (
+	"context"
+	"github.com/core-go/io/writer"
+	"reflect"
+)
+
+type FixedLengthTransformer[T any] struct {
+	formatCols map[int]*writer.FixedLength
+}
+
+func NewFixedLengthTransformer[T any]() (*FixedLengthTransformer[T], error) {
+	var t T
+	modelType := reflect.TypeOf(t)
+	formatCols, err := writer.GetIndexes(modelType, "format")
+	if err != nil {
+		return nil, err
+	}
+	return &FixedLengthTransformer[T]{formatCols: formatCols}, nil
+}
+
+func NewFixedLengthFormatter[T any]() (*FixedLengthTransformer[T], error) {
+	return NewFixedLengthTransformer[T]()
+}
+func (f *FixedLengthTransformer[T]) Transform(ctx context.Context, model *T) string {
+	return writer.ToFixedLength(model, f.formatCols)
+}