diff --git a/types.go b/types.go
index f60bfc7..8edb2b0 100644
--- a/types.go
+++ b/types.go
@@ -15,12 +15,22 @@ type ReadingList struct {
 	Entries []ReadingListEntry `json:"entries"`
 }
 
+func (l ReadingList) String() string {
+	data, _ := json.MarshalIndent(l, "", "\t")
+	return string(data)
+}
+
 type ReadingListEntry struct {
 	Novel          NovelEntry              `json:"novel"`
 	CurrentChapter ReadingListChapterEntry `json:"current_chapter"`
 	LatestChapter  ReadingListChapterEntry `json:"latest_chapter"`
 }
 
+func (e ReadingListEntry) String() string {
+	data, _ := json.MarshalIndent(e, "", "\t")
+	return string(data)
+}
+
 func (e ReadingListEntry) NewChapterAvailable() bool {
 	return e.CurrentChapter.ID != e.LatestChapter.ID
 }
@@ -31,11 +41,21 @@ type ReadingListChapterEntry struct {
 	Link    string    `json:"link"`
 }
 
+func (e ReadingListChapterEntry) String() string {
+	data, _ := json.MarshalIndent(e, "", "\t")
+	return string(data)
+}
+
 type NovelEntry struct {
 	NovelID NovelID `json:"id"`
 	Name    string  `json:"name"`
 }
 
+func (e NovelEntry) String() string {
+	data, _ := json.MarshalIndent(e, "", "\t")
+	return string(data)
+}
+
 type Novel struct {
 	ID               NovelID   `json:"id"`
 	Name             string    `json:"name"`
@@ -48,6 +68,11 @@ type Novel struct {
 	Tags             []TagID   `json:"tags"`
 }
 
+func (n Novel) String() string {
+	data, _ := json.MarshalIndent(n, "", "\t")
+	return string(data)
+}
+
 type NovelType string
 
 const (