HTML entities, specifically using the hexadecimal representation of ASCII characters. By converting text to HTML entities, it helps protect sensitive information such as email addresses from being easily harvested by bots.

The table below presents the ASCII characters, their corresponding characters, and the HTML entity representation in hexadecimal form. The HTML entity representation is displayed as &#x<hexadecimal_value>;.

ASCII	Char	HTML Entity
32	(space)
33	!	!
34	"	"
35	#	#
36	$	$
37	%	%
38	&	&
39	'	'
40	(	(
41	)	)
42	*	*
43	+	+
44	,	,
45	-	-
46	.	.
47	/	/
48	0	0
49	1	1
50	2	2
51	3	3
52	4	4
53	5	5
54	6	6
55	7	7
56	8	8
57	9	9
58	:	:
59	;	;
60	<	<
61	=	=
62	>	>
63	?	?
64	@	@
65	A	A
66	B	B
67	C	C
68	D	D
69	E	E
70	F	F
71	G	G
72	H	H
73	I	I
74	J	J
75	K	K
76	L	L
77	M	M
78	N	N
79	O	O
80	P	P
81	Q	Q
82	R	R
83	S	S
84	T	T
85	U	U
86	V	V
87	W	W
88	X	X
89	Y	Y
90	Z	Z
91	[	[
92	\	\
93	]	]
94	^	^
95	_	_
96	`	`
97	a	a
98	b	b
99	c	c
100	d	d
101	e	e
102	f	f
103	g	g
104	h	h
105	i	i
106	j	j
107	k	k
108	l	l
109	m	m
110	n	n
111	o	o
112	p	p
113	q	q
114	r	r
115	s	s
116	t	t
117	u	u
118	v	v
119	w	w
120	x	x
121	y	y
122	z	z
123	{	{
124	\|	\|
125	}	}
126	~	~

Box Shadow Generator