--- a/crates/jrsonnet-evaluator/src/builtin/manifest.rs
+++ b/crates/jrsonnet-evaluator/src/builtin/manifest.rs
@@ -18,6 +18,8 @@
 pub struct ManifestJsonOptions<'s> {
 	pub padding: &'s str,
 	pub mtype: ManifestType,
+	pub newline: &'s str,
+	pub key_val_sep: &'s str,
 }
 
 pub fn manifest_json_ex(val: &Val, options: &ManifestJsonOptions<'_>) -> Result<String> {
@@ -48,7 +50,7 @@
 			buf.push('[');
 			if !items.is_empty() {
 				if mtype != ManifestType::ToString && mtype != ManifestType::Minify {
-					buf.push('\n');
+					buf.push_str(options.newline);
 				}
 
 				let old_len = cur_padding.len();
@@ -59,7 +61,7 @@
 						if mtype == ManifestType::ToString {
 							buf.push(' ');
 						} else if mtype != ManifestType::Minify {
-							buf.push('\n');
+							buf.push_str(options.newline);
 						}
 					}
 					buf.push_str(cur_padding);
@@ -68,7 +70,7 @@
 				cur_padding.truncate(old_len);
 
 				if mtype != ManifestType::ToString && mtype != ManifestType::Minify {
-					buf.push('\n');
+					buf.push_str(options.newline);
 					buf.push_str(cur_padding);
 				}
 			} else if mtype == ManifestType::Std {
@@ -85,7 +87,7 @@
 			let fields = obj.fields();
 			if !fields.is_empty() {
 				if mtype != ManifestType::ToString && mtype != ManifestType::Minify {
-					buf.push('\n');
+					buf.push_str(options.newline);
 				}
 
 				let old_len = cur_padding.len();
@@ -96,12 +98,12 @@
 						if mtype == ManifestType::ToString {
 							buf.push(' ');
 						} else if mtype != ManifestType::Minify {
-							buf.push('\n');
+							buf.push_str(options.newline);
 						}
 					}
 					buf.push_str(cur_padding);
 					escape_string_json_buf(&field, buf);
-					buf.push_str(": ");
+					buf.push_str(options.key_val_sep);
 					crate::push(
 						None,
 						|| format!("field <{}> manifestification", field.clone()),
@@ -114,7 +116,7 @@
 				cur_padding.truncate(old_len);
 
 				if mtype != ManifestType::ToString && mtype != ManifestType::Minify {
-					buf.push('\n');
+					buf.push_str(options.newline);
 					buf.push_str(cur_padding);
 				}
 			} else if mtype == ManifestType::Std {
--- a/crates/jrsonnet-evaluator/src/builtin/mod.rs
+++ b/crates/jrsonnet-evaluator/src/builtin/mod.rs
@@ -121,7 +121,7 @@
 			("trace".into(), builtin_trace),
 			("join".into(), builtin_join),
 			("escapeStringJson".into(), builtin_escape_string_json),
-			("manifestJsonEx".into(), builtin_manifest_json_ex),
+			("manifestJsonExImpl".into(), builtin_manifest_json_ex_impl),
 			("manifestYamlDocImpl".into(), builtin_manifest_yaml_doc),
 			("reverse".into(), builtin_reverse),
 			("id".into(), builtin_id),
@@ -754,18 +754,22 @@
 	})
 }
 
-fn builtin_manifest_json_ex(
+fn builtin_manifest_json_ex_impl(
 	context: Context,
 	_loc: Option<&ExprLocation>,
 	args: &ArgsDesc,
 ) -> Result<Val> {
-	parse_args!(context, "manifestJsonEx", args, 2, [
+	parse_args!(context, "manifestJsonEx", args, 4, [
 		0, value: ty!(any);
 		1, indent: ty!(string) => Val::Str;
+		2, newline: ty!(string) => Val::Str;
+		3, key_val_sep: ty!(string) => Val::Str;
 	], {
 		Ok(Val::Str(manifest_json_ex(&value, &ManifestJsonOptions {
 			padding: &indent,
 			mtype: ManifestType::Std,
+			newline: &newline,
+			key_val_sep: &key_val_sep,
 		})?.into()))
 	})
 }
--- a/crates/jrsonnet-evaluator/src/lib.rs
+++ b/crates/jrsonnet-evaluator/src/lib.rs
@@ -810,6 +810,14 @@
 	}
 
 	#[test]
+	fn json_minified() {
+		assert_json!(
+			r#"std.manifestJsonMinified({a:3, b:4, c:6})"#,
+			r#""{\"a\":3,\"b\":4,\"c\":6}""#
+		);
+	}
+
+	#[test]
 	fn parse_json() {
 		assert_json!(
 			r#"std.parseJson('{"a": -1,"b": 1,"c": 3.141,"d": []}')"#,
--- a/crates/jrsonnet-evaluator/src/val.rs
+++ b/crates/jrsonnet-evaluator/src/val.rs
@@ -451,6 +451,8 @@
 				&ManifestJsonOptions {
 					padding: "",
 					mtype: ManifestType::ToString,
+					newline: "\n",
+					key_val_sep: ": ",
 				},
 			)?
 			.into(),
@@ -535,6 +537,8 @@
 				} else {
 					ManifestType::Manifest
 				},
+				newline: "\n",
+				key_val_sep: ": ",
 			},
 		)
 		.map(|s| s.into())
@@ -547,6 +551,8 @@
 			&ManifestJsonOptions {
 				padding: &" ".repeat(padding),
 				mtype: ManifestType::Std,
+				newline: "\n",
+				key_val_sep: ": ",
 			},
 		)
 		.map(|s| s.into())
--- a/crates/jrsonnet-stdlib/src/std.jsonnet
+++ b/crates/jrsonnet-stdlib/src/std.jsonnet
@@ -372,7 +372,11 @@
 
   manifestJson(value):: std.manifestJsonEx(value, '    '),
 
-  manifestJsonEx:: $intrinsic(manifestJsonEx),
+  manifestJsonMinified(value):: std.manifestJsonEx(value, '', '', ':'),
+
+  manifestJsonExImpl:: $intrinsic(manifestJsonExImpl),
+
+  manifestJsonEx(value, indent, newline='\n', key_val_sep=': '):: std.manifestJsonExImpl(value, indent, newline, key_val_sep),
 
   manifestYamlDocImpl:: $intrinsic(manifestYamlDocImpl),