diff --git a/pkg/digest/digest.go b/pkg/digest/digest.go
index abb2b61..122e0c1 100644
--- a/pkg/digest/digest.go
+++ b/pkg/digest/digest.go
@@ -55,9 +55,9 @@ func NewDigester(fsys fs.FS, cnf *Config) (*Digester, error) {
 }
 
 type Digest struct {
-	Tree          string              `json:"tree" yaml:"tree"`
-	Reports       map[string][]Report `json:"reports" yaml:"reports"` // Grouped by path
-	SelectedFiles []FileData          `json:"selected_files" yaml:"selected_files"`
+	Tree          string              `json:"tree"`
+	Reports       map[string][]Report `json:"reports"` // Grouped by path
+	SelectedFiles []FileData          `json:"selected_files"`
 }
 
 var defaultReadFiles = []string{
diff --git a/pkg/digest/files.go b/pkg/digest/files.go
index c87f11a..614b0f5 100644
--- a/pkg/digest/files.go
+++ b/pkg/digest/files.go
@@ -18,11 +18,11 @@ import (
 
 // FileData wraps file data to pass to a template.
 type FileData struct {
-	Name      string
-	Content   string
-	Truncated bool
-	Cleaned   bool
-	Size      int64
+	Name      string `json:"name"`
+	Content   string `json:"content"`
+	Truncated bool   `json:"truncated,omitempty"`
+	Cleaned   bool   `json:"cleaned,omitempty"`
+	Size      int64  `json:"size,omitempty"`
 }
 
 // Clean removes comments and redacts secrets in a list of files.