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	619	65	30 %	95 %
2	Number of Backlinks Authority	-0.31	134088	3557	30 %	94 %
3	Number of Unique LSI Words Used Diversity	-0.31	908	303	69 %	69 %
4	Number of Images Size	-0.31	67	26	53 %	86 %
5	Search Result Domain is .com, .net, or .org Other	-0.3	1	1	8 %	86 %
6	Number of Do Follow Backlinks Authority	-0.3	133206	3411	28 %	95 %
7	Search Result Domain is .com Other	-0.3	1	1	7 %	85 %
8	Number of No Follow Backlinks Authority	-0.29	1084	122	21 %	92 %
9	Load Time Milliseconds Performance	-0.29	20510	2726	66 %	89 %
10	Number of Images with ALT Text Size	-0.28	53	18	49 %	89 %
11	Has Meta Charset Technology	-0.28	1	1	53 %	84 %
12	Word Count Size	-0.28	8520	1478	68 %	92 %
13	Unabridged Word Count Size	-0.27	10269	1805	68 %	93 %
14	Clean Text Kilobytes Size	-0.27	61	12	53 %	94 %
15	Number of P Tags Size	-0.27	98	36	52 %	86 %
16	Number of H1 Tags Size	-0.27	4	1	50 %	86 %
17	Number of Heading Tags Size	-0.27	39	19	55 %	88 %
18	Number of HTML Tags Size	-0.26	2216	918	67 %	88 %
19	Number of Top 200 Shared Factors Used Diversity	-0.26	50	33	79 %	82 %
20	Number of Top 50 Shared Factors Used Diversity	-0.26	16	10	77 %	79 %
21	Search Result Number of Dirs in Path Other	-0.26	3	2	61 %	86 %
22	Number of Top 100 Shared Factors Used Diversity	-0.26	38	25	78 %	80 %
23	Number of H2 Tags Size	-0.25	11	6	49 %	86 %
24	Number of Links Authority	-0.25	336	114	62 %	90 %
25	Number of DoFollow Links Authority	-0.25	333	111	62 %	92 %
26	Number of Factors Used Diversity	-0.25	396	172	80 %	73 %
27	Number of Internal Links Authority	-0.25	312	97	60 %	87 %
28	Number of HTTPS Links Authority	-0.25	335	113	62 %	91 %
29	Number of HTML Comments Size	-0.25	477	55	50 %	87 %
30	Number of Images without ALT Text Size	-0.25	21	8	37 %	88 %
31	Average Words Per Sentence Size	-0.24	242	26	58 %	87 %
32	Has JSON-LD Schema Markup Relevancy	-0.24	1	1	35 %	77 %
33	Number of Unique Variations Used Diversity	-0.23	27	11	61 %	62 %
34	Variations in P Tags Relevancy	-0.23	1658	50	44 %	86 %
35	Variations in H1-H6 Tags Relevancy	-0.23	173	10	44 %	78 %
36	Variations in H1, H2, and H3 Tags Relevancy	-0.23	118	8	43 %	77 %
37	Has Form Technology	-0.23	1	1	31 %	78 %
38	Page Size Kilobytes Size	-0.23	788	296	66 %	59 %
39	Search Result Uses HTTPS Other	-0.22	1	1	63 %	69 %
40	Variations in ALT Attributes Relevancy	-0.22	106	7	31 %	77 %
41	Number of H3 Tags Size	-0.22	18	8	41 %	87 %
42	Search Result Host Length Size	-0.22	22	16	65 %	77 %
43	Variations in A Tags Relevancy	-0.22	2514	45	44 %	77 %
44	Number of Forms Technology	-0.22	6	2	34 %	84 %
45	Number of Includes Technology	-0.22	54	23	60 %	79 %
46	Variations in Div Tags Relevancy	-0.22	22029	295	52 %	84 %
47	Variations in LI Tags Relevancy	-0.22	734	29	45 %	85 %
48	Search Result Domain Length Size	-0.22	22	16	65 %	78 %
49	Variations in H1 and H2 Tags Relevancy	-0.22	71	5	42 %	77 %
50	LSI Words in Sentences Relevancy	-0.22	3764	624	46 %	90 %
51	Flesch Kincaid Reading Grade Level Other	-0.22	6	1	76 %	91 %
52	Variations in Search Result Document File Name Relevancy	-0.21	7	1	34 %	80 %
53	Leading Variations in H1-H6 Tags Relevancy	-0.21	5	2	34 %	74 %
54	Leading Variations in H1, H2, and H3 Tags Relevancy	-0.21	4	2	33 %	74 %
55	Number of External Links Authority	-0.21	38	16	58 %	93 %
56	Variations in Span Tags Relevancy	-0.21	364	13	34 %	80 %
57	Uses JSON-LD name Other	-0.21	1	1	38 %	77 %
58	Percentage of DoFollow Internal Links Authority	-0.21	87	60	58 %	78 %
59	Number of Facebook Pages Authority	-0.21	5	2	39 %	86 %
60	Variations in Search Result URL Path Relevancy	-0.21	6	1	34 %	78 %
61	Number of DoFollow External Links Authority	-0.21	36	15	57 %	94 %
62	Variations in Body Tags Relevancy	-0.21	97091	1172	62 %	76 %
63	Variations in H1 Tags Relevancy	-0.2	11	2	39 %	77 %
64	Term Frequency Relevancy	-0.2	6	3	59 %	70 %
65	Number of CSS Includes Technology	-0.2	21	8	56 %	65 %
66	Inline JavaScript Kilobytes Size	-0.2	353	115	61 %	54 %
67	Number Of JSON-LD Types Relevancy	-0.2	50	13	40 %	82 %
68	Entities in Sentences Relevancy	-0.2	600	128	47 %	93 %
69	Has Meta Robots Other	-0.2	1	1	20 %	76 %
70	Search Result Summary Length Size	-0.2	154	146	79 %	68 %
71	Number of Social Pages Authority	-0.2	14	5	45 %	86 %
72	Variations in HTML Tags Relevancy	-0.2	97091	1129	59 %	79 %
73	Number of Sentences Size	-0.2	327	121	65 %	85 %
74	Number of Absolute URLs Authority	-0.2	523	227	64 %	66 %
75	Entities in the HTML Tag Relevancy	-0.2	687	133	51 %	92 %
76	Variations in H2 Tags Relevancy	-0.2	61	4	35 %	76 %
77	Variation Count in Top 30KB Relevancy	-0.19	6580	79	49 %	83 %
78	Has Meta Viewport Technology	-0.19	1	1	62 %	76 %
79	Number of Instagram Pages Authority	-0.19	12	3	30 %	86 %
80	Number of JavaScript Includes Technology	-0.19	40	16	62 %	83 %
81	Percentage of DoFollow Links Authority	-0.19	99	77	62 %	79 %
82	Number of Social Accounts Authority	-0.19	3	2	27 %	88 %
83	Number of Questions In Headings Size	-0.19	5	2	27 %	83 %
84	Number of Facebook Accounts Authority	-0.19	3	1	17 %	80 %
85	Percentage of DoFollow External Links Authority	-0.19	30	15	56 %	69 %
86	Number of Distinct Entities Used Diversity	-0.19	60	21	53 %	91 %
87	Variations in Search Result URL Relevancy	-0.19	13	2	41 %	72 %
88	Variations in A Tag HREF Attributes Relevancy	-0.19	1082	44	39 %	80 %
89	Has US Phone Number Trust	-0.19	1	1	26 %	82 %
90	Uses JSON-LD url Other	-0.19	1	1	35 %	79 %
91	Variations in Sentences Relevancy	-0.19	1695	59	53 %	80 %
92	Has Privacy Policy Trust	-0.19	1	1	36 %	77 %
93	Has Contact Page Trust	-0.19	1	1	34 %	61 %
94	Number of US Phone Numbers Trust	-0.19	108	8	28 %	87 %
95	Inline CSS Kilobytes Size	-0.18	154	55	52 %	84 %
96	Has Apple Touch Icon Technology	-0.18	1	1	36 %	76 %
97	Variations in H3 Tags Relevancy	-0.18	14	4	28 %	75 %
98	Number of LinkedIn Pages Authority	-0.18	3	1	20 %	81 %
99	Title Length Size	-0.18	129	49	64 %	59 %
100	Uses JSON-LD description Other	-0.18	1	1	30 %	69 %
101	Variations in Meta Description Relevancy	-0.18	44	2	42 %	61 %
102	Number Of Claimed Brands Other	-0.18	7	2	17 %	76 %
103	Headings Has Question Other	-0.18	1	1	27 %	82 %
104	Uses JSON-LD mainEntity Other	-0.18	1	1	1 %	22 %
105	Variations in Distinct A Tag HREF Attributes Relevancy	-0.18	789	28	41 %	83 %
106	Variations in Absolute URLs Relevancy	-0.18	6009	107	43 %	79 %
107	Variations in Main Tags Relevancy	-0.18	9831	143	26 %	86 %
108	Is Article Page Other	-0.18	1	1	31 %	65 %
109	Exact Matches in H1-H6 Tags Relevancy	-0.18	6	1	16 %	68 %
110	Title Word Count Size	-0.18	17	8	65 %	63 %
111	Uses Schema organization Other	-0.18	1	1	24 %	77 %
112	Number of Questions Size	-0.18	36	11	52 %	62 %
113	Leading Variations in H1 Tags Relevancy	-0.18	1	1	21 %	71 %
114	Has Schema Markup Relevancy	-0.18	1	1	47 %	54 %
115	Entities in H1 Tags	-0.18	5	2	36 %	87 %
116	Variations in Nav Tags Relevancy	-0.18	3481	57	33 %	75 %
117	Number of Prices Size	-0.18	484	106	52 %	77 %
118	Number of Nofollow Links Authority	-0.18	20	3	16 %	85 %
119	Exact Matches in the HTML Tag Relevancy	-0.18	324	12	24 %	74 %
120	Number of NoFollow External Links Authority	-0.17	7	2	11 %	85 %
121	Variations in Section Tags Relevancy	-0.17	899	28	27 %	87 %
122	Variations in the Title Tag Relevancy	-0.17	4	2	47 %	64 %
123	Variations in OpenGraph Title Relevancy	-0.17	3	2	40 %	50 %
124	Uses JSON-LD Organization Other	-0.17	1	1	24 %	76 %
125	Has Terms of Service Trust	-0.17	1	1	27 %	72 %
126	Uses Schema url Other	-0.17	1	1	43 %	50 %
127	LSI Words in H1 Tags Relevancy	-0.17	9	3	37 %	88 %
128	Is Home Page Other	-0.17	1	1	9 %	56 %
129	Number of H4 Tags Size	-0.17	12	3	23 %	85 %
130	Exact Matches in Top 30KB Relevancy	-0.17	6	2	15 %	66 %
131	LSI Words in H2 Tags Relevancy	-0.17	48	14	35 %	85 %
132	Has Entities in H1 Tags Relevancy	-0.17	1	1	36 %	85 %
133	Number of Questions In H3 Tags Size	-0.17	3	1	14 %	76 %
134	Uses Schema name Other	-0.17	1	1	46 %	53 %
135	Uses JSON-LD datePublished Other	-0.17	1	1	24 %	76 %
136	Uses Schema datemodified Other	-0.17	1	1	22 %	68 %
137	Number of Twitter Accounts Authority	-0.17	2	1	12 %	86 %
138	Variations in the Canonical URL Relevancy	-0.17	39	2	35 %	77 %
139	Number of Email Addresses Trust	-0.17	12	3	33 %	72 %
140	Percentage of NoFollow Links Authority	-0.17	6	2	14 %	81 %
141	Variations in Script Tags Relevancy	-0.17	29554	395	50 %	68 %
142	Entities in H2 Tags	-0.17	20	5	35 %	91 %
143	Variations in Footer Tags Relevancy	-0.17	4986	59	29 %	71 %
144	Has Email Trust	-0.17	1	1	32 %	69 %
145	Uses Schema searchaction Other	-0.17	1	1	15 %	61 %
146	Uses JSON-LD ImageObject Other	-0.17	1	1	22 %	71 %
147	Uses JSON-LD dateModified Other	-0.16	1	1	22 %	69 %
148	Uses Schema webpage Other	-0.16	1	1	24 %	64 %
149	Variations in First 100 Words Relevancy	-0.16	187	8	45 %	73 %
150	Uses JSON-LD BreadcrumbList Other	-0.16	1	1	25 %	68 %
151	Uses JSON-LD ListItem Other	-0.16	1	1	26 %	68 %
152	Uses JSON-LD WebPage Other	-0.16	1	1	23 %	63 %
153	Variations in OpenGraph Description Relevancy	-0.16	4	2	39 %	57 %
154	Entities in H3 Tags	-0.16	39	6	29 %	92 %
155	Exact Matches in Title Tag Relevancy	-0.16	1	1	13 %	65 %
156	Has Entities in H2 Tags Relevancy	-0.16	1	1	34 %	86 %
157	Uses JSON-LD SearchAction Other	-0.16	1	1	15 %	64 %
158	Has HREF Lang Technology	-0.16	1	1	8 %	74 %
159	Percentage of NoFollow External Links Authority	-0.16	4	1	10 %	83 %
160	Number of Meta Generator Tags Technology	-0.16	2	1	23 %	61 %
161	LSI Words in H3 Tags Relevancy	-0.16	72	16	30 %	88 %
162	Variation Density in Top 30KB Relevancy	-0.16	298	6	49 %	64 %
163	Uses Schema headline Other	-0.16	1	1	14 %	70 %
164	Uses Schema website Other	-0.16	1	1	23 %	62 %
165	Variations in Strong Tags Relevancy	-0.16	36	3	20 %	83 %
166	Word Count in Meta Description Size	-0.16	26	17	53 %	58 %
167	Leading Variations in H2 Tags Relevancy	-0.16	3	1	20 %	72 %
168	Has Meta Description Relevancy	-0.16	1	1	50 %	52 %
169	Variations in Search Result Link Text Relevancy	-0.16	3	2	68 %	64 %
170	Has Entities in H3 Tags Relevancy	-0.16	1	1	28 %	86 %
171	Has OpenGraph Image Relevancy	-0.16	1	1	41 %	51 %
172	Entities in Title Tag Relevancy	-0.16	5	2	46 %	90 %
173	Clean Keyword Density in the HTML Tag Relevancy	-0.16	204	7	49 %	54 %
174	Has OpenGraph Type Relevancy	-0.15	1	1	46 %	52 %
175	Uses Microdata ratingCount Other	-0.15	1	1	1 %	19 %
176	Is Store Page Other	-0.15	1	1	29 %	76 %
177	Is OpenGraph Type Article Technology	-0.15	1	1	22 %	61 %
178	Uses Microdata AggregateRating Other	-0.15	1	1	1 %	23 %
179	Uses Schema image Other	-0.15	1	1	14 %	77 %
180	Leading Variations in Title Tag Relevancy	-0.15	1	1	25 %	70 %
181	Meta Description Length Size	-0.15	166	108	53 %	58 %
182	Number of HREF Lang Tags Size	-0.15	12	2	7 %	79 %
183	Uses JSON-LD Person Other	-0.15	1	1	14 %	74 %
184	Has RSS Link Authority	-0.15	1	1	18 %	60 %
185	Variations in I Tags Relevancy	-0.15	109	4	13 %	77 %
186	TF/IDF Relevancy	-0.15	1	1	42 %	75 %
187	Uses Schema description Other	-0.15	1	1	39 %	45 %
188	Has FavIcon Technology	-0.15	1	1	59 %	60 %
189	Uses JSON-LD WebSite Other	-0.15	1	1	21 %	68 %
190	Uses JSON-LD headline Other	-0.15	1	1	13 %	73 %
191	Exact Matches in Sentences Relevancy	-0.15	209	5	18 %	72 %
192	Uses Schema propertyvaluespecification Other	-0.15	1	1	12 %	54 %
193	Uses Schema valuename Other	-0.15	1	1	12 %	54 %
194	Variations in Search Result Display URL Relevancy	-0.15	3	2	69 %	66 %
195	Uses Schema urltemplate Other	-0.15	1	1	13 %	57 %
196	Uses Schema entrypoint Other	-0.15	1	1	13 %	57 %
197	Has Canonical URL Authority	-0.15	1	1	55 %	64 %
198	Is Category Page Other	-0.15	1	1	10 %	70 %
199	Search Result URL Length Size	-0.15	110	72	80 %	28 %
200	Uses JSON-LD PropertyValueSpecification Other	-0.15	1	1	12 %	56 %

Measures 154168 SEO Factors

152446 Built-In SEO Factors

143221 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