diff --git a/src/libsysprof-analyze/sysprof-document-file.c b/src/libsysprof-analyze/sysprof-document-file.c
index bfd70a1a..fe949e34 100644
--- a/src/libsysprof-analyze/sysprof-document-file.c
+++ b/src/libsysprof-analyze/sysprof-document-file.c
@@ -35,6 +35,7 @@ struct _SysprofDocumentFile
 enum {
   PROP_0,
   PROP_BYTES,
+  PROP_IS_COMPRESSED,
   PROP_PATH,
   PROP_SIZE,
   N_PROPS
@@ -73,6 +74,10 @@ sysprof_document_file_get_property (GObject    *object,
       g_value_take_boxed (value, sysprof_document_file_dup_bytes (self));
       break;
 
+    case PROP_IS_COMPRESSED:
+      g_value_set_boolean (value, sysprof_document_file_is_compressed (self));
+      break;
+
     case PROP_SIZE:
       g_value_set_uint64 (value, sysprof_document_file_get_size (self));
       break;
@@ -100,6 +105,11 @@ sysprof_document_file_class_init (SysprofDocumentFileClass *klass)
                         G_TYPE_BYTES,
                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
 
+  properties [PROP_IS_COMPRESSED] =
+    g_param_spec_boolean ("is-compressed", NULL, NULL,
+                          FALSE,
+                          (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
   properties [PROP_SIZE] =
     g_param_spec_uint64 ("size", NULL, NULL,
                          0, G_MAXUINT64, 0,
@@ -249,3 +259,21 @@ sysprof_document_file_get_size (SysprofDocumentFile *self)
 
   return size;
 }
+
+/**
+ * sysprof_document_file_is_compressed:
+ * @self: a #SysprofDocumentFile
+ *
+ * Checks if the embedded file is compressed. If so, %TRUE is returned.
+ *
+ * Note that files are transparently decompressed when opening streams.
+ *
+ * Returns: %TRUE if the embedded file was compressed
+ */
+gboolean
+sysprof_document_file_is_compressed (SysprofDocumentFile *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_DOCUMENT_FILE (self), FALSE);
+
+  return self->compressed;
+}
diff --git a/src/libsysprof-analyze/sysprof-document-file.h b/src/libsysprof-analyze/sysprof-document-file.h
index 4865e469..faa60747 100644
--- a/src/libsysprof-analyze/sysprof-document-file.h
+++ b/src/libsysprof-analyze/sysprof-document-file.h
@@ -32,12 +32,14 @@ SYSPROF_AVAILABLE_IN_ALL
 G_DECLARE_FINAL_TYPE (SysprofDocumentFile, sysprof_document_file, SYSPROF, DOCUMENT_FILE, GObject)
 
 SYSPROF_AVAILABLE_IN_ALL
-const char   *sysprof_document_file_get_path  (SysprofDocumentFile *self);
+const char   *sysprof_document_file_get_path      (SysprofDocumentFile *self);
 SYSPROF_AVAILABLE_IN_ALL
-GBytes       *sysprof_document_file_dup_bytes (SysprofDocumentFile *self);
+GBytes       *sysprof_document_file_dup_bytes     (SysprofDocumentFile *self);
 SYSPROF_AVAILABLE_IN_ALL
-GInputStream *sysprof_document_file_read      (SysprofDocumentFile *self);
+GInputStream *sysprof_document_file_read          (SysprofDocumentFile *self);
 SYSPROF_AVAILABLE_IN_ALL
-gsize         sysprof_document_file_get_size  (SysprofDocumentFile *self);
+gsize         sysprof_document_file_get_size      (SysprofDocumentFile *self);
+SYSPROF_AVAILABLE_IN_ALL
+gboolean      sysprof_document_file_is_compressed (SysprofDocumentFile *self);
 
 G_END_DECLS