200 Top SEO Ranking Factors September 2026

TOP SEO Factors for 2026-09 previous

Top SEO Factor data is updated daily for latest "month to date" measurements.

	Name	Correlation	#1 Max	Page 1 Avg	Usage %	Searches %
1	Number of Referring Domains Authority	-0.32	396	77	36 %	95 %
2	Number of Backlinks Authority	-0.32	39791	3391	36 %	95 %
3	Search Result Domain is .com Other	-0.32	1	1	10 %	82 %
4	Search Result Domain is .com, .net, or .org Other	-0.3	1	1	10 %	82 %
5	Number of Do Follow Backlinks Authority	-0.3	39675	3155	32 %	97 %
6	Number of No Follow Backlinks Authority	-0.3	1084	158	26 %	92 %
7	Number of Unique LSI Words Used Diversity	-0.28	908	373	76 %	79 %
8	Number of Images Size	-0.28	67	28	60 %	89 %
9	Number of Images without ALT Text Size	-0.26	18	9	41 %	95 %
10	Has Meta Charset Technology	-0.26	1	1	58 %	82 %
11	Clean Text Kilobytes Size	-0.26	34	13	59 %	95 %
12	Load Time Milliseconds Performance	-0.26	20510	3953	72 %	89 %
13	Word Count Size	-0.26	4415	1586	73 %	89 %
14	Unabridged Word Count Size	-0.26	5346	1902	73 %	89 %
15	Has JSON-LD Schema Markup Relevancy	-0.26	1	1	39 %	82 %
16	Number of H1 Tags Size	-0.25	3	1	55 %	79 %
17	Search Result Number of Dirs in Path Other	-0.25	3	2	65 %	82 %
18	Number of Heading Tags Size	-0.25	39	21	62 %	87 %
19	Number of P Tags Size	-0.25	98	40	60 %	89 %
20	Number of Internal Links Authority	-0.25	312	114	66 %	87 %
21	Number of HTML Tags Size	-0.24	2216	1031	73 %	89 %
22	Number of HTTPS Links Authority	-0.24	335	133	68 %	92 %
23	Number of Links Authority	-0.24	336	135	68 %	87 %
24	Number of DoFollow Links Authority	-0.24	333	131	69 %	95 %
25	Number of Factors Used Diversity	-0.23	396	192	87 %	76 %
26	Number of Images with ALT Text Size	-0.23	53	20	57 %	95 %
27	Number of Top 200 Shared Factors Used Diversity	-0.23	50	33	81 %	82 %
28	Number of Top 100 Shared Factors Used Diversity	-0.23	38	25	81 %	79 %
29	Number of Top 50 Shared Factors Used Diversity	-0.23	16	11	80 %	76 %
30	Number of H2 Tags Size	-0.23	11	7	57 %	84 %
31	LSI Words in Sentences Relevancy	-0.23	3764	901	58 %	92 %
32	Number of Facebook Pages Authority	-0.23	4	2	42 %	87 %
33	Variations in A Tags Relevancy	-0.22	102	25	52 %	82 %
34	Average Words Per Sentence Size	-0.22	242	31	63 %	84 %
35	Number of H3 Tags Size	-0.22	18	9	47 %	82 %
36	Number of Social Pages Authority	-0.22	7	4	47 %	87 %
37	Number of Instagram Pages Authority	-0.22	6	2	30 %	92 %
38	Variations in P Tags Relevancy	-0.22	181	42	52 %	87 %
39	Variations in LI Tags Relevancy	-0.22	118	28	54 %	82 %
40	Number of Includes Technology	-0.21	54	23	65 %	82 %
41	Variations in H1-H6 Tags Relevancy	-0.21	20	9	52 %	79 %
42	Number of HTML Comments Size	-0.21	477	89	56 %	87 %
43	Has Form Technology	-0.21	1	1	37 %	71 %
44	Variations in Div Tags Relevancy	-0.21	437	111	58 %	84 %
45	Variations in Search Result Document File Name Relevancy	-0.21	3	1	36 %	79 %
46	Variations in H1, H2, and H3 Tags Relevancy	-0.21	19	8	49 %	79 %
47	Has Meta Robots Other	-0.21	1	1	21 %	63 %
48	Variations in Span Tags Relevancy	-0.21	34	11	39 %	79 %
49	Leading Variations in H1-H6 Tags Relevancy	-0.21	5	2	38 %	76 %
50	Number of Facebook Accounts Authority	-0.21	2	1	20 %	84 %
51	Leading Variations in H1, H2, and H3 Tags Relevancy	-0.21	4	2	37 %	76 %
52	Flesch Kincaid Reading Grade Level Other	-0.21	6	2	82 %	89 %
53	Term Frequency Relevancy	-0.21	4	3	69 %	71 %
54	Variations in Search Result URL Path Relevancy	-0.2	3	1	37 %	79 %
55	Number of Forms Technology	-0.2	6	2	41 %	82 %
56	Number Of JSON-LD Types Relevancy	-0.2	38	15	46 %	84 %
57	Variations in Distinct A Tag HREF Attributes Relevancy	-0.2	98	23	47 %	84 %
58	Number of LinkedIn Pages Authority	-0.2	2	1	25 %	89 %
59	Has Contact Page Trust	-0.2	1	1	41 %	53 %
60	Variations in ALT Attributes Relevancy	-0.2	55	7	32 %	82 %
61	Variations in A Tag HREF Attributes Relevancy	-0.2	204	40	47 %	84 %
62	Variations in H1 and H2 Tags Relevancy	-0.2	10	4	49 %	79 %
63	Number of External Links Authority	-0.2	38	17	63 %	95 %
64	Uses JSON-LD name Other	-0.2	1	1	46 %	82 %
65	Variations in Body Tags Relevancy	-0.2	960	275	69 %	79 %
66	Has HREF Lang Technology	-0.2	1	1	9 %	71 %
67	Variations in HTML Tags Relevancy	-0.2	960	275	69 %	79 %
68	Variations in H1 Tags Relevancy	-0.2	2	1	41 %	76 %
69	Number of Unique Variations Used Diversity	-0.2	25	11	68 %	63 %
70	Variations in Sentences Relevancy	-0.19	171	51	63 %	76 %
71	Is Home Page Other	-0.19	1	1	12 %	47 %
72	Page Size Kilobytes Size	-0.19	788	307	75 %	58 %
73	Number of CSS Includes Technology	-0.19	21	9	60 %	68 %
74	Has Apple Touch Icon Technology	-0.19	1	1	39 %	79 %
75	Number of DoFollow External Links Authority	-0.19	36	16	63 %	97 %
76	Uses JSON-LD url Other	-0.19	1	1	40 %	82 %
77	Number of Sentences Size	-0.19	327	134	72 %	79 %
78	Number of HREF Lang Tags Size	-0.19	12	2	9 %	71 %
79	Number of Social Accounts Authority	-0.19	3	2	30 %	89 %
80	Variation Count in Top 30KB Relevancy	-0.19	65	19	53 %	89 %
81	Uses Schema url Other	-0.18	1	1	54 %	47 %
82	Search Result Host Length Size	-0.18	22	16	71 %	79 %
83	Search Result Summary Length Size	-0.18	151	146	82 %	63 %
84	Variations in H2 Tags Relevancy	-0.18	9	4	42 %	74 %
85	Variations in Script Tags Relevancy	-0.18	343	86	57 %	68 %
86	Exact Matches in Top 30KB Relevancy	-0.18	4	2	18 %	58 %
87	Search Result Uses HTTPS Other	-0.18	1	1	67 %	66 %
88	Number of JavaScript Includes Technology	-0.18	40	17	69 %	82 %
89	Variations in Nav Tags Relevancy	-0.18	225	33	40 %	76 %
90	LSI Words in H1 Tags Relevancy	-0.18	9	4	50 %	89 %
91	Variations in Absolute URLs Relevancy	-0.18	181	55	50 %	87 %
92	Uses JSON-LD description Other	-0.18	1	1	38 %	71 %
93	Leading Variations in Title Tag Relevancy	-0.18	1	1	28 %	63 %
94	Variations in Section Tags Relevancy	-0.18	95	22	32 %	89 %
95	LSI Words in H2 Tags Relevancy	-0.18	48	21	49 %	87 %
96	Number of Questions In Headings Size	-0.18	4	2	33 %	87 %
97	LSI Words in H3 Tags Relevancy	-0.18	72	24	42 %	89 %
98	Variations in Search Result URL Relevancy	-0.18	3	2	46 %	82 %
99	Has Meta Viewport Technology	-0.18	1	1	65 %	63 %
100	Uses JSON-LD representativeOfPage Other	-0.17	1	1	1 %	18 %
101	Uses Schema representativeofpage Other	-0.17	1	1	1 %	18 %
102	Uses JSON-LD mainEntity Other	-0.17	1	1	1 %	26 %
103	Variations in Main Tags Relevancy	-0.17	301	65	30 %	92 %
104	Variations making whole A Tags Relevancy	-0.17	2	1	26 %	66 %
105	Variations in the Title Tag Relevancy	-0.17	3	2	54 %	61 %
106	Number of H4 Tags Size	-0.17	12	4	25 %	79 %
107	Uses Schema organization Other	-0.17	1	1	27 %	71 %
108	Search Result Domain Length Size	-0.17	22	16	71 %	84 %
109	Percentage of DoFollow Internal Links Authority	-0.17	87	64	65 %	82 %
110	Variations in OpenGraph Title Relevancy	-0.17	2	1	47 %	50 %
111	Uses Schema article Other	-0.17	1	1	8 %	53 %
112	Number of Nofollow Links Authority	-0.17	5	2	16 %	82 %
113	Uses Microdata AggregateRating Other	-0.17	1	1	1 %	21 %
114	Number Of Claimed Brands Other	-0.17	7	2	21 %	74 %
115	Variations Making Whole Span Tags Relevancy	-0.17	5	1	18 %	79 %
116	Uses Schema applicationcategory Other	-0.17	1	1	4 %	13 %
117	Uses JSON-LD datePublished Other	-0.17	1	1	28 %	71 %
118	Inline CSS Kilobytes Size	-0.17	105	60	56 %	92 %
119	TF/IDF Relevancy	-0.17	1	1	47 %	71 %
120	Number of Questions Size	-0.17	36	13	62 %	63 %
121	Uses JSON-LD Organization Other	-0.17	1	1	29 %	74 %
122	Number of NoFollow External Links Authority	-0.17	3	2	12 %	79 %
123	Number of US Phone Numbers Trust	-0.17	75	10	35 %	89 %
124	Exact Matches in Title Tag Relevancy	-0.17	1	1	15 %	58 %
125	Variations in Button Tags Relevancy	-0.16	7	2	11 %	82 %
126	Has RSS Link Authority	-0.16	1	1	20 %	58 %
127	Number of Twitter Accounts Authority	-0.16	2	1	14 %	87 %
128	Exact Matches in H1-H6 Tags Relevancy	-0.16	3	1	19 %	71 %
129	Entities in Sentences Relevancy	-0.16	487	142	49 %	92 %
130	Leading Variations in H1 Tags Relevancy	-0.16	1	1	22 %	76 %
131	Has Privacy Policy Trust	-0.16	1	1	41 %	74 %
132	Percentage of DoFollow Links Authority	-0.16	99	81	69 %	82 %
133	Inline JavaScript Kilobytes Size	-0.16	241	99	70 %	53 %
134	Entities in the HTML Tag Relevancy	-0.16	490	148	53 %	89 %
135	Uses Schema datemodified Other	-0.16	1	1	24 %	63 %
136	Variations in H3 Tags Relevancy	-0.16	14	4	31 %	84 %
137	Headings Has Question Other	-0.16	1	1	34 %	87 %
138	Number of Absolute URLs Authority	-0.16	523	253	71 %	68 %
139	Variations in Style Tags Relevancy	-0.16	25	5	10 %	84 %
140	Has US Phone Number Trust	-0.16	1	1	32 %	87 %
141	Uses Microdata ratingCount Other	-0.16	1	1	1 %	21 %
142	Variations in the Canonical URL Relevancy	-0.16	4	2	40 %	82 %
143	Number of Meta Generator Tags Technology	-0.16	2	1	25 %	66 %
144	Clean Keyword Density in the HTML Tag Relevancy	-0.16	7	4	55 %	55 %
145	Uses JSON-LD WebPage Other	-0.16	1	1	30 %	58 %
146	Has Terms of Service Trust	-0.16	1	1	34 %	74 %
147	Uses JSON-LD isFamilyFriendly Other	-0.16	1	1	1 %	13 %
148	Uses Schema mainentity Other	-0.16	1	1	2 %	39 %
149	Number of Distinct Entities Used Diversity	-0.16	51	23	55 %	89 %
150	Entities in H1 Tags	-0.16	4	2	39 %	87 %
151	Variation Density in Top 30KB Relevancy	-0.16	6	2	59 %	66 %
152	Uses JSON-LD dateModified Other	-0.16	1	1	27 %	68 %
153	Variations making whole H1, H2, and H3 Tags Relevancy	-0.16	1	1	10 %	63 %
154	Variations in Footer Tags Relevancy	-0.16	41	9	31 %	68 %
155	Uses Schema aggregateoffer Other	-0.16	1	1	4 %	18 %
156	Uses JSON-LD ImageObject	-0.16	1	1	27 %	71 %
157	Leading Variations in H3 Tags Relevancy	-0.15	2	1	15 %	76 %
158	Uses Microdata Brand Other	-0.15	1	1	1 %	21 %
159	Number of Questions In H3 Tags Size	-0.15	3	2	18 %	79 %
160	Variations in Meta Description Relevancy	-0.15	3	2	50 %	68 %
161	Uses JSON-LD priceValidUntil Other	-0.15	1	1	4 %	16 %
162	Uses Schema pricevaliduntil Other	-0.15	1	1	4 %	16 %
163	Uses Schema webpage Other	-0.15	1	1	27 %	58 %
164	Uses JSON-LD BreadcrumbList Other	-0.15	1	1	32 %	74 %
165	Variations in Strong Tags Relevancy	-0.15	8	2	23 %	79 %
166	Variations in OpenGraph Description Relevancy	-0.15	3	2	45 %	66 %
167	Percentage of NoFollow External Links Authority	-0.15	3	1	10 %	79 %
168	Percentage of NoFollow Links Authority	-0.15	4	2	14 %	79 %
169	Uses Schema copyrightyear Other	-0.15	1	1	1 %	13 %
170	Is Category Page Other	-0.15	1	1	14 %	71 %
171	Number of Prices Size	-0.15	447	133	59 %	71 %
172	Uses Schema telephone Other	-0.15	1	1	19 %	68 %
173	Uses Schema inlanguage Other	-0.15	1	1	28 %	55 %
174	Uses JSON-LD GovernmentOrganization Other	-0.15	1	1	2 %	18 %
175	Uses Schema governmentorganization Other	-0.15	1	1	2 %	18 %
176	Uses JSON-LD ListItem Other	-0.15	1	1	32 %	68 %
177	Is Article Page Other	-0.15	1	1	36 %	68 %
178	Number of Email Addresses Trust	-0.15	7	3	36 %	71 %
179	Has Email Trust	-0.15	1	1	34 %	63 %
180	Exact Matches in the HTML Tag Relevancy	-0.15	32	8	29 %	71 %
181	Uses JSON-LD SoftwareApplication Other	-0.15	1	1	5 %	13 %
182	Uses Schema softwareapplication Other	-0.15	1	1	5 %	13 %
183	Percentage of DoFollow External Links Authority	-0.15	30	15	62 %	71 %
184	Has Schema Markup Relevancy	-0.15	1	1	55 %	68 %
185	Leading Variations in H2 Tags Relevancy	-0.15	3	1	22 %	74 %
186	Is OpenGraph Type Article Technology	-0.15	1	1	26 %	66 %
187	Uses Schema website Other	-0.15	1	1	25 %	58 %
188	Uses Schema urltemplate Other	-0.14	1	1	14 %	58 %
189	LSI Words in H4 Tags Relevancy	-0.14	29	7	21 %	79 %
190	Entities in H3 Tags	-0.14	39	7	32 %	89 %
191	Entities in H2 Tags	-0.14	20	6	39 %	89 %
192	Uses Schema listitem Other	-0.14	1	1	42 %	42 %
193	Uses Schema searchaction Other	-0.14	1	1	18 %	58 %
194	Has XMLRPC Technology	-0.14	1	1	18 %	68 %
195	Uses Schema entrypoint Other	-0.14	1	1	15 %	58 %
196	Variations in I Tags Relevancy	-0.14	9	3	14 %	79 %
197	Variations in HTML Comment Tags Relevancy	-0.14	2	1	7 %	76 %
198	Uses JSON-LD itemCondition Other	-0.14	1	1	4 %	16 %
199	Uses Microdata logo Other	-0.14	1	1	1 %	45 %
200	Uses Schema itemcondition Other	-0.14	1	1	4 %	16 %

Measures 154166 SEO Factors

152444 Built-In SEO Factors

143219 On-page SEO Factors

9225 Google Maps SEO Factors for Local SEO

1722 SEO Factors from APIs

147 API SEO Factors for off-page SEO like backlinks and referring domains.

1575 Technology Stack SEO Factors

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TOP SEO Factors for 2026-09 previous