diff --git a/vlib/x/json2/encoder.v b/vlib/x/json2/encoder.v
index b270f87c0c..cf617af133 100644
--- a/vlib/x/json2/encoder.v
+++ b/vlib/x/json2/encoder.v
@@ -186,7 +186,8 @@ fn (e &Encoder) encode_value_with_level[T](val T, level int, mut buf []u8) ! {
 	} $else $if T is $enum {
 		str_int := int(val).str()
 		unsafe { buf.push_many(str_int.str, str_int.len) }
-	} $else $if T is $int || T is bool {
+	} $else $if T is $int || T is bool || T is i32 {
+		// bug? `i32` not in `$int`?
 		str_int := val.str()
 		unsafe { buf.push_many(str_int.str, str_int.len) }
 	} $else $if T is $float {
diff --git a/vlib/x/json2/json2.v b/vlib/x/json2/json2.v
index 8713234cee..228816704d 100644
--- a/vlib/x/json2/json2.v
+++ b/vlib/x/json2/json2.v
@@ -101,7 +101,7 @@ pub fn (f Any) u8() u8 {
 		u8 {
 			return f
 		}
-		u16, u32, i8, i16, i32, int, i64, f32, f64, bool {
+		u16, u32, u64, i8, i16, i32, int, i64, f32, f64, bool {
 			return u8(u16(f))
 		}
 		string {
@@ -113,6 +113,42 @@ pub fn (f Any) u8() u8 {
 	}
 }
 
+// u16 uses `Any` as a 16-bit unsigned integer.
+pub fn (f Any) u16() u16 {
+	match f {
+		u16 {
+			return f
+		}
+		u8, u32, u64, i8, i16, i32, int, i64, f32, f64, bool {
+			return u16(f)
+		}
+		string {
+			return f.u16()
+		}
+		else {
+			return 0
+		}
+	}
+}
+
+// u32 uses `Any` as a 32-bit unsigned integer.
+pub fn (f Any) u32() u32 {
+	match f {
+		u32 {
+			return f
+		}
+		u8, u16, u64, i8, i16, i32, int, i64, f32, f64, bool {
+			return u32(f)
+		}
+		string {
+			return f.u32()
+		}
+		else {
+			return 0
+		}
+	}
+}
+
 // u64 uses `Any` as a 64-bit unsigned integer.
 pub fn (f Any) u64() u64 {
 	match f {
diff --git a/vlib/x/json2/tests/any_test.v b/vlib/x/json2/tests/any_test.v
index 003b1d11d0..a232f35e9d 100644
--- a/vlib/x/json2/tests/any_test.v
+++ b/vlib/x/json2/tests/any_test.v
@@ -1,9 +1,16 @@
 import x.json2 as json
 
 const sample_data = {
-	'int':  json.Any(int(1))
-	'i64':  json.Any(i64(128))
-	'f32':  json.Any(f32(2.0))
+	'u8':   json.Any(u8(1))
+	'u16':  json.Any(u16(2))
+	'u32':  json.Any(u32(3))
+	'u64':  json.Any(u64(4))
+	'i8':   json.Any(i8(5))
+	'i16':  json.Any(i16(6))
+	'i32':  json.Any(i32(7))
+	'int':  json.Any(int(8))
+	'i64':  json.Any(i64(9))
+	'f32':  json.Any(f32(2.3))
 	'f64':  json.Any(f64(1.283))
 	'bool': json.Any(false)
 	'str':  json.Any('test')
@@ -23,9 +30,16 @@ fn is_null(f json.Any) bool {
 
 fn test_f32() {
 	// valid conversions
-	assert sample_data['int'] or { 0 }.f32() == 1.0
-	assert sample_data['i64'] or { 0 }.f32() == 128.0
-	assert sample_data['f32'] or { 0 }.f32() == 2.0
+	assert sample_data['u8'] or { 0 }.f32() == 1.0
+	assert sample_data['u16'] or { 0 }.f32() == 2.0
+	assert sample_data['u32'] or { 0 }.f32() == 3.0
+	assert sample_data['u64'] or { 0 }.f32() == 4.0
+	assert sample_data['i8'] or { 0 }.f32() == 5.0
+	assert sample_data['i16'] or { 0 }.f32() == 6.0
+	assert sample_data['i32'] or { 0 }.f32() == 7.0
+	assert sample_data['int'] or { 0 }.f32() == 8.0
+	assert sample_data['i64'] or { 0 }.f32() == 9.0
+	assert sample_data['f32'] or { 0 }.f32() == 2.3
 	assert sample_data['f64'] or { 0 }.f32() == 1.2829999923706055
 	// invalid conversions
 	assert sample_data['bool'] or { 0 }.f32() == 0.0
@@ -37,9 +51,16 @@ fn test_f32() {
 
 fn test_f64() {
 	// valid conversions
-	assert sample_data['int'] or { 0 }.f64() == 1.0
-	assert sample_data['i64'] or { 0 }.f64() == 128.0
-	assert sample_data['f32'] or { 0 }.f64() == 2.0
+	assert sample_data['u8'] or { 0 }.f64() == 1.0
+	assert sample_data['u16'] or { 0 }.f64() == 2.0
+	assert sample_data['u32'] or { 0 }.f64() == 3.0
+	assert sample_data['u64'] or { 0 }.f64() == 4.0
+	assert sample_data['i8'] or { 0 }.f64() == 5.0
+	assert sample_data['i16'] or { 0 }.f64() == 6.0
+	assert sample_data['i32'] or { 0 }.f64() == 7.0
+	assert sample_data['int'] or { 0 }.f64() == 8.0
+	assert sample_data['i64'] or { 0 }.f64() == 9.0
+	assert sample_data['f32'] or { 0 }.f64() == 2.299999952316284
 	assert sample_data['f64'] or { 0 }.f64() == 1.283
 	// invalid conversions
 	assert sample_data['bool'] or { 0 }.f64() == 0.0
@@ -49,10 +70,80 @@ fn test_f64() {
 	assert sample_data['obj'] or { 0 }.f64() == 0.0
 }
 
+fn test_i8() {
+	// valid conversions
+	assert sample_data['u8'] or { 0 }.i8() == 1
+	assert sample_data['u16'] or { 0 }.i8() == 2
+	assert sample_data['u32'] or { 0 }.i8() == 3
+	assert sample_data['u64'] or { 0 }.i8() == 4
+	assert sample_data['i8'] or { 0 }.i8() == 5
+	assert sample_data['i16'] or { 0 }.i8() == 6
+	assert sample_data['i32'] or { 0 }.i8() == 7
+	assert sample_data['int'] or { 0 }.i8() == 8
+	assert sample_data['i64'] or { 0 }.i8() == 9
+	assert sample_data['f32'] or { 0 }.i8() == 2
+	assert sample_data['f64'] or { 0 }.i8() == 1
+	assert json.Any(true).i8() == 1
+	assert json.Any('123').i8() == 123
+	// invalid conversions
+	assert sample_data['null'] or { 0 }.i8() == 0
+	assert sample_data['arr'] or { 0 }.i8() == 0
+	assert sample_data['obj'] or { 0 }.i8() == 0
+}
+
+fn test_i16() {
+	// valid conversions
+	assert sample_data['u8'] or { 0 }.i16() == 1
+	assert sample_data['u16'] or { 0 }.i16() == 2
+	assert sample_data['u32'] or { 0 }.i16() == 3
+	assert sample_data['u64'] or { 0 }.i16() == 4
+	assert sample_data['i8'] or { 0 }.i16() == 5
+	assert sample_data['i16'] or { 0 }.i16() == 6
+	assert sample_data['i32'] or { 0 }.i16() == 7
+	assert sample_data['int'] or { 0 }.i16() == 8
+	assert sample_data['i64'] or { 0 }.i16() == 9
+	assert sample_data['f32'] or { 0 }.i16() == 2
+	assert sample_data['f64'] or { 0 }.i16() == 1
+	assert json.Any(true).i16() == 1
+	assert json.Any('123').i16() == 123
+	// invalid conversions
+	assert sample_data['null'] or { 0 }.i16() == 0
+	assert sample_data['arr'] or { 0 }.i16() == 0
+	assert sample_data['obj'] or { 0 }.i16() == 0
+}
+
+fn test_i32() {
+	// valid conversions
+	assert sample_data['u8'] or { 0 }.i32() == 1
+	assert sample_data['u16'] or { 0 }.i32() == 2
+	assert sample_data['u32'] or { 0 }.i32() == 3
+	assert sample_data['u64'] or { 0 }.i32() == 4
+	assert sample_data['i8'] or { 0 }.i32() == 5
+	assert sample_data['i16'] or { 0 }.i32() == 6
+	assert sample_data['i32'] or { 0 }.i32() == 7
+	assert sample_data['int'] or { 0 }.i32() == 8
+	assert sample_data['i64'] or { 0 }.i32() == 9
+	assert sample_data['f32'] or { 0 }.i32() == 2
+	assert sample_data['f64'] or { 0 }.i32() == 1
+	assert json.Any(true).i32() == 1
+	assert json.Any('123').i32() == 123
+	// invalid conversions
+	assert sample_data['null'] or { 0 }.i32() == 0
+	assert sample_data['arr'] or { 0 }.i32() == 0
+	assert sample_data['obj'] or { 0 }.i32() == 0
+}
+
 fn test_int() {
 	// valid conversions
-	assert sample_data['int'] or { 0 }.int() == 1
-	assert sample_data['i64'] or { 0 }.int() == 128
+	assert sample_data['u8'] or { 0 }.int() == 1
+	assert sample_data['u16'] or { 0 }.int() == 2
+	assert sample_data['u32'] or { 0 }.int() == 3
+	assert sample_data['u64'] or { 0 }.int() == 4
+	assert sample_data['i8'] or { 0 }.int() == 5
+	assert sample_data['i16'] or { 0 }.int() == 6
+	assert sample_data['i32'] or { 0 }.int() == 7
+	assert sample_data['int'] or { 0 }.int() == 8
+	assert sample_data['i64'] or { 0 }.int() == 9
 	assert sample_data['f32'] or { 0 }.int() == 2
 	assert sample_data['f64'] or { 0 }.int() == 1
 	assert json.Any(true).int() == 1
@@ -65,8 +156,15 @@ fn test_int() {
 
 fn test_i64() {
 	// valid conversions
-	assert sample_data['int'] or { 0 }.i64() == 1
-	assert sample_data['i64'] or { 0 }.i64() == 128
+	assert sample_data['u8'] or { 0 }.i64() == 1
+	assert sample_data['u16'] or { 0 }.i64() == 2
+	assert sample_data['u32'] or { 0 }.i64() == 3
+	assert sample_data['u64'] or { 0 }.i64() == 4
+	assert sample_data['i8'] or { 0 }.i64() == 5
+	assert sample_data['i16'] or { 0 }.i64() == 6
+	assert sample_data['i32'] or { 0 }.i64() == 7
+	assert sample_data['int'] or { 0 }.i64() == 8
+	assert sample_data['i64'] or { 0 }.i64() == 9
 	assert sample_data['f32'] or { 0 }.i64() == 2
 	assert sample_data['f64'] or { 0 }.i64() == 1
 	assert json.Any(true).i64() == 1
@@ -77,10 +175,101 @@ fn test_i64() {
 	assert sample_data['obj'] or { 0 }.i64() == 0
 }
 
+fn test_u8() {
+	// valid conversions
+	assert sample_data['u8'] or { 0 }.u8() == 1
+	assert sample_data['u16'] or { 0 }.u8() == 2
+	assert sample_data['u32'] or { 0 }.u8() == 3
+	assert sample_data['u64'] or { 0 }.u8() == 4
+	assert sample_data['i8'] or { 0 }.u8() == 5
+	assert sample_data['i16'] or { 0 }.u8() == 6
+	assert sample_data['i32'] or { 0 }.u8() == 7
+	assert sample_data['int'] or { 0 }.u8() == 8
+	assert sample_data['i64'] or { 0 }.u8() == 9
+	assert sample_data['f32'] or { 0 }.u8() == 2
+	assert sample_data['f64'] or { 0 }.u8() == 1
+	assert json.Any(true).u8() == 1
+	assert json.Any('123').u8() == 123
+	// invalid conversions
+	assert sample_data['null'] or { 0 }.u8() == 0
+	assert sample_data['arr'] or { 0 }.u8() == 0
+	assert sample_data['obj'] or { 0 }.u8() == 0
+}
+
+fn test_u16() {
+	// valid conversions
+	assert sample_data['u8'] or { 0 }.u16() == 1
+	assert sample_data['u16'] or { 0 }.u16() == 2
+	assert sample_data['u32'] or { 0 }.u16() == 3
+	assert sample_data['u64'] or { 0 }.u16() == 4
+	assert sample_data['i8'] or { 0 }.u16() == 5
+	assert sample_data['i16'] or { 0 }.u16() == 6
+	assert sample_data['i32'] or { 0 }.u16() == 7
+	assert sample_data['int'] or { 0 }.u16() == 8
+	assert sample_data['i64'] or { 0 }.u16() == 9
+	assert sample_data['f32'] or { 0 }.u16() == 2
+	assert sample_data['f64'] or { 0 }.u16() == 1
+	assert json.Any(true).u16() == 1
+	assert json.Any('123').u16() == 123
+	// invalid conversions
+	assert sample_data['null'] or { 0 }.u16() == 0
+	assert sample_data['arr'] or { 0 }.u16() == 0
+	assert sample_data['obj'] or { 0 }.u16() == 0
+}
+
+fn test_u32() {
+	// valid conversions
+	assert sample_data['u8'] or { 0 }.u32() == 1
+	assert sample_data['u16'] or { 0 }.u32() == 2
+	assert sample_data['u32'] or { 0 }.u32() == 3
+	assert sample_data['u64'] or { 0 }.u32() == 4
+	assert sample_data['i8'] or { 0 }.u32() == 5
+	assert sample_data['i16'] or { 0 }.u32() == 6
+	assert sample_data['i32'] or { 0 }.u32() == 7
+	assert sample_data['int'] or { 0 }.u32() == 8
+	assert sample_data['i64'] or { 0 }.u32() == 9
+	assert sample_data['f32'] or { 0 }.u32() == 2
+	assert sample_data['f64'] or { 0 }.u32() == 1
+	assert json.Any(true).u32() == 1
+	assert json.Any('123').u32() == 123
+	// invalid conversions
+	assert sample_data['null'] or { 0 }.u32() == 0
+	assert sample_data['arr'] or { 0 }.u32() == 0
+	assert sample_data['obj'] or { 0 }.u32() == 0
+}
+
+fn test_u64() {
+	// valid conversions
+	assert sample_data['u8'] or { 0 }.u64() == 1
+	assert sample_data['u16'] or { 0 }.u64() == 2
+	assert sample_data['u32'] or { 0 }.u64() == 3
+	assert sample_data['u64'] or { 0 }.u64() == 4
+	assert sample_data['i8'] or { 0 }.u64() == 5
+	assert sample_data['i16'] or { 0 }.u64() == 6
+	assert sample_data['i32'] or { 0 }.u64() == 7
+	assert sample_data['int'] or { 0 }.u64() == 8
+	assert sample_data['i64'] or { 0 }.u64() == 9
+	assert sample_data['f32'] or { 0 }.u64() == 2
+	assert sample_data['f64'] or { 0 }.u64() == 1
+	assert json.Any(true).u64() == 1
+	assert json.Any('123').u64() == 123
+	// invalid conversions
+	assert sample_data['null'] or { 0 }.u64() == 0
+	assert sample_data['arr'] or { 0 }.u64() == 0
+	assert sample_data['obj'] or { 0 }.u64() == 0
+}
+
 fn test_as_map() {
-	assert sample_data['int'] or { 0 }.as_map()['0'] or { 0 }.int() == 1
-	assert sample_data['i64'] or { 0 }.as_map()['0'] or { 0 }.i64() == 128.0
-	assert sample_data['f32'] or { 0 }.as_map()['0'] or { 0 }.f32() == 2.0
+	assert sample_data['u8'] or { 0 }.as_map()['0'] or { 0 }.u8() == 1
+	assert sample_data['u16'] or { 0 }.as_map()['0'] or { 0 }.u16() == 2
+	assert sample_data['u32'] or { 0 }.as_map()['0'] or { 0 }.u32() == 3
+	assert sample_data['u64'] or { 0 }.as_map()['0'] or { 0 }.u64() == 4
+	assert sample_data['i8'] or { 0 }.as_map()['0'] or { 0 }.i8() == 5
+	assert sample_data['i16'] or { 0 }.as_map()['0'] or { 0 }.i16() == 6
+	assert sample_data['i32'] or { 0 }.as_map()['0'] or { 0 }.i32() == 7
+	assert sample_data['int'] or { 0 }.as_map()['0'] or { 0 }.int() == 8
+	assert sample_data['i64'] or { 0 }.as_map()['0'] or { 0 }.i64() == 9
+	assert sample_data['f32'] or { 0 }.as_map()['0'] or { 0 }.f32() == 2.3
 	assert sample_data['f64'] or { 0 }.as_map()['0'] or { 0 }.f64() == 1.283
 	assert sample_data['bool'] or { 0 }.as_map()['0'] or { 0 }.bool() == false
 	assert sample_data['str'] or { 0 }.as_map()['0'] or { 0 }.str() == 'test'
@@ -99,9 +288,16 @@ fn test_as_map_of_strings() {
 }
 
 fn test_arr() {
-	assert sample_data['int'] or { 0 }.arr()[0].int() == 1
-	assert sample_data['i64'] or { 0 }.arr()[0].i64() == 128.0
-	assert sample_data['f32'] or { 0 }.arr()[0].f32() == 2.0
+	assert sample_data['u8'] or { 0 }.arr()[0].u8() == 1
+	assert sample_data['u16'] or { 0 }.arr()[0].u16() == 2
+	assert sample_data['u32'] or { 0 }.arr()[0].u32() == 3
+	assert sample_data['u64'] or { 0 }.arr()[0].u64() == 4
+	assert sample_data['i8'] or { 0 }.arr()[0].i8() == 5
+	assert sample_data['i16'] or { 0 }.arr()[0].i16() == 6
+	assert sample_data['i32'] or { 0 }.arr()[0].i32() == 7
+	assert sample_data['int'] or { 0 }.arr()[0].int() == 8
+	assert sample_data['i64'] or { 0 }.arr()[0].i64() == 9
+	assert sample_data['f32'] or { 0 }.arr()[0].f32() == 2.3
 	assert sample_data['f64'] or { 0 }.arr()[0].f64() == 1.283
 	assert sample_data['bool'] or { 0 }.arr()[0].bool() == false
 	assert sample_data['str'] or { 0 }.arr()[0].str() == 'test'
@@ -114,6 +310,13 @@ fn test_bool() {
 	// valid conversions
 	assert sample_data['bool'] or { 0 }.bool() == false
 	assert json.Any('true').bool() == true
+	assert sample_data['u8'] or { 0 }.bool() == true
+	assert sample_data['u16'] or { 0 }.bool() == true
+	assert sample_data['u32'] or { 0 }.bool() == true
+	assert sample_data['u64'] or { 0 }.bool() == true
+	assert sample_data['i8'] or { 0 }.bool() == true
+	assert sample_data['i16'] or { 0 }.bool() == true
+	assert sample_data['i32'] or { 0 }.bool() == true
 	assert sample_data['int'] or { 0 }.bool() == true
 	assert sample_data['i64'] or { 0 }.bool() == true
 	assert sample_data['f32'] or { 0 }.bool() == true
@@ -125,13 +328,20 @@ fn test_bool() {
 }
 
 fn test_str() {
-	assert sample_data['int'] or { 0 }.str() == '1'
-	assert sample_data['i64'] or { 0 }.str() == '128'
-	assert sample_data['f32'] or { 0 }.str() == '2'
+	assert sample_data['u8'] or { 0 }.str() == '1'
+	assert sample_data['u16'] or { 0 }.str() == '2'
+	assert sample_data['u32'] or { 0 }.str() == '3'
+	assert sample_data['u64'] or { 0 }.str() == '4'
+	assert sample_data['i8'] or { 0 }.str() == '5'
+	assert sample_data['i16'] or { 0 }.str() == '6'
+	assert sample_data['i32'] or { 0 }.str() == '7'
+	assert sample_data['int'] or { 0 }.str() == '8'
+	assert sample_data['i64'] or { 0 }.str() == '9'
+	assert sample_data['f32'] or { 0 }.str() == '2.299999952316284'
 	assert sample_data['f64'] or { 0 }.str() == '1.283'
 	assert sample_data['bool'] or { 0 }.str() == 'false'
 	assert sample_data['str'] or { 0 }.str() == 'test'
 	assert sample_data['null'] or { 0 }.str() == 'null'
 	assert sample_data['arr'] or { 'not lol' }.str() == '["lol"]'
-	assert sample_data.str() == '{"int":1,"i64":128,"f32":2,"f64":1.283,"bool":false,"str":"test","null":null,"arr":["lol"],"obj":{"foo":10}}'
+	assert sample_data.str() == '{"u8":1,"u16":2,"u32":3,"u64":4,"i8":5,"i16":6,"i32":7,"int":8,"i64":9,"f32":2.299999952316284,"f64":1.283,"bool":false,"str":"test","null":null,"arr":["lol"],"obj":{"foo":10}}'
 }