what characters are not allowed in url

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what characters are not allowed in url	0.24	0.8	1632	77	38
what	1.22	0.2	5197	16	4
characters	0.54	0.7	7196	25	10
are	1.73	0.2	511	82	3
not	0.45	0.4	398	82	3
allowed	1.42	0.4	7185	28	7
in	0.38	0.2	6229	19	2
url	1.77	0.8	9518	34	3

Keyword	CPC	PCC	Volume	Score
what characters are not allowed in urls	0.46	0.2	8048	3
url not allowed characters	1.28	0.1	4038	85
special characters not allowed in url	0.35	0.8	1559	23
characters not allowed in urls	0.85	0.7	7112	19
what characters are not allowed in a url	1.78	1	3553	5
what characters are allowed in url	0.56	0.9	4959	38
allowed characters in url	0.87	0.4	8896	23
what characters are illegal in a url	1.99	0.9	8811	24
illegal characters in url	1.68	0.9	2718	85
illegal characters found in url	1.56	0.9	6056	43
characters are not allowed	0.33	0.1	7520	6
what characters are not allowed in filenames	0.77	0.9	7943	44
url can't contain control characters	1.1	0.4	7776	84
can url have special characters	1.28	0.1	2482	3
what characters can be in a url	1.75	0.7	3353	2
special characters not allowed in username	1.42	0.1	2322	14
bad characters for url	1.74	0.5	8776	92
control characters are not allowed	1.82	0.2	655	1
characters not allowed in domain names	0.28	0.3	3526	91
name can only contain url-friendly characters	1.22	0.7	3811	17
valid characters for a url	0.46	0.6	8751	32
non-url-safe characters	1.61	0.5	7337	55
name may not contain non-url-safe chars	0.48	1	7386	23