What is Url encoding?&How encoding process works?

reflink: https://encodestring.com/url-encode/

Like i said earlier, all character does not require encoding. You can simply see which character require encoding or not through this table.

Dec	Hex	Enc	Char	Description
0	00		^@	Null (NUL)
1	01		^A	Start of heading (SOH)
2	02		^B	Start of text (STX)
3	03		^C	End of text (ETX)
4	04		^D	End of transmission (EOT)
5	05		^E	Enquiry (ENQ)
6	06		^F	Acknowledge (ACK)
7	07		^G	Bell (BEL)
8	08		^H	Backspace (BS)
9	09		^I	Horizontal tab (HT)
10	0A		^J	Line feed (LF)
11	0B		^K	Vertical tab (VT)
12	0C		^L	New page/form feed (FF)
13	0D		^M	Carriage return (CR)
14	0E		^N	Shift out (SO)
15	0F		^O	Shift in (SI)
16	10		^P	Data link escape (DLE)
17	11		^Q	Device control 1 (DC1)
18	12		^R	Device control 2 (DC2)
19	13		^S	Device control 3 (DC3)
20	14		^T	Device control 4 (DC4)
21	15		^U	Negative acknowledge (NAK)
22	16		^V	Synchronous idle (SYN)
23	17		^W	End of transmission block (ETB)
24	18		^X	Cancel (CAN)
25	19		^Y	End of medium (EM)
26	1A		^Z	Substitute (SUB)
27	1B		^[	Escape (ESC)
28	1C		^\	File separator (FS)
29	1D		^]	Group separator (GS)
30	1E		^^	Record separator (RS)
31	1F		^_	Unit separator (US)
32	20	%20		Space
33	21	%21	!	Exclamation mark
34	22	%22	“	Quotation mark/Double quote
35	23	%23	#	Number sign
36	24	%24	$	Dollar sign
37	25	%25	%	Percent sign
38	26	%26	&	Ampersand
39	27	%27	‘	Apostrophe/Single quote
40	28	%28	(	Left parenthesis
41	29	%29	)	Right parenthesis
42	2A	%2A	*	Asterisk
43	2B	%2B	+	Plus sign
44	2C	%2C	,	Comma
45	2D		–	Hyphen/Minus
46	2E		.	Full stop/Period
47	2F	%2F	/	Solidus/Slash
48	30		0	Digit zero
49	31		1	Digit one
50	32		2	Digit two
51	33		3	Digit three
52	34		4	Digit four
53	35		5	Digit five
54	36		6	Digit six
55	37		7	Digit seven
56	38		8	Digit eight
57	39		9	Digit nine
58	3A	%3A	:	Colon
59	3B	%3B	;	Semicolon
60	3C	%3C	<	Less-than sign
61	3D	%3D	=	Equal/Equality sign
62	3E	%3E	>	Greater-than sign
63	3F	%3F	?	Question mark

Dec	Hex	Oct	Char	Description
64	40	%40	@	Commercial at/At sign
65	41		A	Latin capital letter A
66	42		B	Latin capital letter B
67	43		C	Latin capital letter C
68	44		D	Latin capital letter D
69	45		E	Latin capital letter E
70	46		F	Latin capital letter F
71	47		G	Latin capital letter G
72	48		H	Latin capital letter H
73	49		I	Latin capital letter I
74	4A		J	Latin capital letter J
75	4B		K	Latin capital letter K
76	4C		L	Latin capital letter L
77	4D		M	Latin capital letter M
78	4E		N	Latin capital letter N
79	4F		O	Latin capital letter O
80	50		P	Latin capital letter P
81	51		Q	Latin capital letter Q
82	52		R	Latin capital letter R
83	53		S	Latin capital letter S
84	54		T	Latin capital letter T
85	55		U	Latin capital letter U
86	56		V	Latin capital letter V
87	57		W	Latin capital letter W
88	58		X	Latin capital letter X
89	59		Y	Latin capital letter Y
90	5A		Z	Latin capital letter Z
91	5B	%5B	[	Left square bracket
92	5C	%5C	\	Reverse solidus/Backslash
93	5D	%5D	]	Right square bracket
94	5E	%5E	^	Circumflex accent/Caret
95	5F		_	Underscore/Low line
96	60	%60	`	Grave accent
97	61		a	Latin small letter a
98	62		b	Latin small letter b
99	63		c	Latin small letter c
100	64		d	Latin small letter d
101	65		e	Latin small letter e
102	66		f	Latin small letter f
103	67		g	Latin small letter g
104	68		h	Latin small letter h
105	69		i	Latin small letter i
106	6A		j	Latin small letter j
107	6B		k	Latin small letter k
108	6C		l	Latin small letter l
109	6D		m	Latin small letter m
110	6E		n	Latin small letter n
111	6F		o	Latin small letter o
112	70		p	Latin small letter p
113	71		q	Latin small letter q
114	72		r	Latin small letter r
115	73		s	Latin small letter s
116	74		t	Latin small letter t
117	75		u	Latin small letter u
118	76		v	Latin small letter v
119	77		w	Latin small letter w
120	78		x	Latin small letter x
121	79		y	Latin small letter y
122	7A		z	Latin small letter z
123	7B	%7B	{	Left curly bracket
124	7C	%7C	|	Vertical line/Vertical bar
125	7D	%7D	}	Right curly bracket
126	7E		~	Tilde
127	7F		DEL	Delete (DEL)