diff --git a/include/lib/util_fmt.h b/include/lib/util_fmt.h
index 957768bf..1d3b9af9 100644
--- a/include/lib/util_fmt.h
+++ b/include/lib/util_fmt.h
@@ -45,12 +45,13 @@
 #define FMT_DEFAULT	0
 
 /* Names of supported output format types. */
-#define FMT_TYPE_NAMES	"json json-seq pairs csv"
+#define FMT_TYPE_NAMES	"json json-seq jsonl pairs csv"
 
 /**
  * enum util_fmt_t - Output format types.
  * @FMT_JSON:    JavaScript Object Notation output data structure
  * @FMT_JSONSEQ: Sequence of JSON data structures according to RFC7464
+ * @FMT_JSONL:   Line-delimited JSON
  * @FMT_PAIRS:   Textual key=value pairs
  * @FMT_CSV:     Comma-separated-values output
  *
@@ -59,6 +60,7 @@
 enum util_fmt_t {
 	FMT_JSON,
 	FMT_JSONSEQ,
+	FMT_JSONL,
 	FMT_PAIRS,
 	FMT_CSV,
 };
@@ -232,4 +234,23 @@ void util_fmt_obj_end(void);
  */
 void util_fmt_pair(unsigned int mflags, const char *key, const char *fmt, ...);
 
+/**
+ * util_fmt_is_json() - Determine whether format is JSON.
+ * @type: Format type identifier.
+ *
+ * Return: %true if type is JSON, %false otherwise.
+ */
+bool util_fmt_is_json(enum util_fmt_t type);
+
+/**
+ * util_fmt_is_json_stream() - Determine whether format is JSON stream.
+ * @type: Format type identifier.
+ *
+ * Determine whether a given format @type represents a JSON streaming format
+ * such as json-seq (@FMT_JSONSEQ) or jsonl (@FMT_JSONL).
+ *
+ * Return: %true if type is either @FMT_JSONSEQ or @FMT_JSONL, %false otherwise.
+ */
+bool util_fmt_is_json_stream(enum util_fmt_t type);
+
 #endif /* LIB_UTIL_FMT_H */
diff --git a/libutil/util_fmt.c b/libutil/util_fmt.c
index c0898fbf..31bbe704 100644
--- a/libutil/util_fmt.c
+++ b/libutil/util_fmt.c
@@ -91,6 +91,7 @@ static const struct {
 } formats[] = {
 	{ "json", FMT_JSON },
 	{ "json-seq", FMT_JSONSEQ },
+	{ "jsonl", FMT_JSONL },
 	{ "pairs", FMT_PAIRS },
 	{ "csv",  FMT_CSV },
 };
@@ -111,6 +112,29 @@ bool util_fmt_name_to_type(const char *name, enum util_fmt_t *type)
 	return false;
 }
 
+bool util_fmt_is_json(enum util_fmt_t type)
+{
+	switch (type) {
+	case FMT_JSON:
+	case FMT_JSONSEQ:
+	case FMT_JSONL:
+		return true;
+	default:
+		return false;
+	}
+}
+
+bool util_fmt_is_json_stream(enum util_fmt_t type)
+{
+	switch (type) {
+	case FMT_JSONSEQ:
+	case FMT_JSONL:
+		return true;
+	default:
+		return false;
+	}
+}
+
 static void safe_write(const char *str)
 {
 	size_t done, todo;
@@ -129,7 +153,7 @@ static void _indent(unsigned int off, bool safe)
 {
 	unsigned int num, i;
 
-	if (f.type == FMT_JSONSEQ)
+	if (util_fmt_is_json_stream(f.type))
 		return;
 	num = f.ind_base + off;
 	if (f.type == FMT_JSON && f.lvl > 0)
@@ -408,8 +432,8 @@ static void emit_meta_object(void)
 	util_fmt_pair(quoted, "time", "%s", date);
 	_util_fmt_obj_end();
 
-	if (f.type == FMT_JSONSEQ) {
-		/* Tool meta-data is a separate object for JSONSEQ. */
+	if (util_fmt_is_json_stream(f.type)) {
+		/* Tool meta-data is a separate object for JSON streams. */
 		util_fmt_obj_end();
 	}
 }
@@ -478,7 +502,7 @@ void util_fmt_obj_end(void)
 {
 	_util_fmt_obj_end();
 
-	if (f.lvl == 1 && f.meta_done && f.type != FMT_JSONSEQ) {
+	if (f.lvl == 1 && f.meta_done && !util_fmt_is_json_stream(f.type)) {
 		/* Emit closure for top-level meta-container object. */
 		util_fmt_obj_end();
 	}
@@ -737,7 +761,7 @@ void util_fmt_init(FILE *fd, enum util_fmt_t type, unsigned int flags,
 	f.do_warn     = (flags & FMT_WARN);
 	f.handle_int  = (flags & FMT_HANDLEINT);
 	f.api_level   = api_level;
-	if (type == FMT_JSONSEQ)
+	if (util_fmt_is_json_stream(type))
 		f.nl = "";
 	else
 		f.nl = "\n";
@@ -750,6 +774,7 @@ void util_fmt_init(FILE *fd, enum util_fmt_t type, unsigned int flags,
 		break;
 	case FMT_JSON:
 	case FMT_JSONSEQ:
+	case FMT_JSONL:
 		f.obj_start = &json_obj_start;
 		f.obj_end   = &json_obj_end;
 		f.map       = &json_map;
diff --git a/libutil/util_fmt_example.c b/libutil/util_fmt_example.c
index a3f08fc6..cb13d182 100644
--- a/libutil/util_fmt_example.c
+++ b/libutil/util_fmt_example.c
@@ -193,6 +193,9 @@ int main(int UNUSED(argc), char *UNUSED(argv[]))
 	announce("JSON formatted as sequence");
 	simple_example(FMT_JSONSEQ, FMT_DEFAULT);
 
+	announce("JSON Lines format");
+	simple_example(FMT_JSONL, FMT_DEFAULT);
+
 	announce("Pairs output");
 	simple_example(FMT_PAIRS, FMT_KEEPINVAL);
 
@@ -232,6 +235,9 @@ int main(int UNUSED(argc), char *UNUSED(argv[]))
 	announce("JSON sequence output with meta-data");
 	meta_example(FMT_JSONSEQ);
 
+	announce("JSON Lines output with meta-data");
+	meta_example(FMT_JSONL);
+
 	announce("Pairs output with meta-data");
 	meta_example(FMT_PAIRS);