200 Top SEO Ranking Factors May 2026

TOP SEO Factors for 2026-05 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 Unique LSI Words Used Diversity	-0.23	975	270	81 %	76 %
2	Search Result Domain is .com, .net, or .org Other	-0.22	1	1	6 %	82 %
3	Number of Top 200 Shared Factors Used Diversity	-0.22	51	36	96 %	93 %
4	Number of Top 100 Shared Factors Used Diversity	-0.22	38	27	95 %	93 %
5	Load Time Milliseconds Performance	-0.22	35254	1496	81 %	92 %
6	Search Result Domain is .com Other	-0.22	1	1	6 %	82 %
7	Number of Top 50 Shared Factors Used Diversity	-0.21	17	11	95 %	92 %
8	Number of Unique Variations Used Diversity	-0.2	20	6	73 %	88 %
9	Variations in H1-H6 Tags Relevancy	-0.2	409	8	55 %	87 %
10	Variations in H1, H2, and H3 Tags Relevancy	-0.2	378	7	54 %	87 %
11	Number of Referring Domains Authority	-0.2	3169	117	45 %	78 %
12	Variations in H1 and H2 Tags Relevancy	-0.2	287	4	52 %	88 %
13	Number of Backlinks Authority	-0.2	382197	7122	45 %	80 %
14	Variations in P Tags Relevancy	-0.19	4557	51	56 %	91 %
15	Word Count Size	-0.19	6928	1414	82 %	92 %
16	Number of P Tags Size	-0.19	123	37	67 %	90 %
17	Variations in Div Tags Relevancy	-0.19	68329	336	65 %	91 %
18	Number of Heading Tags Size	-0.19	49	20	68 %	89 %
19	Unabridged Word Count Size	-0.19	10152	1797	82 %	92 %
20	Number of Do Follow Backlinks Authority	-0.19	377721	6115	41 %	78 %
21	Clean Text Kilobytes Size	-0.19	67	12	67 %	92 %
22	Variations in LI Tags Relevancy	-0.19	15771	50	54 %	87 %
23	Number of Factors Used Diversity	-0.19	272	168	95 %	89 %
24	Number of Images Size	-0.19	372	27	68 %	90 %
25	Number of No Follow Backlinks Authority	-0.18	97499	1223	33 %	74 %
26	Number of Distinct Entities Used Diversity	-0.18	61	25	71 %	94 %
27	Number of H2 Tags Size	-0.18	23	7	61 %	89 %
28	Entities in Sentences Relevancy	-0.18	1308	124	60 %	95 %
29	Entities in H2 Tags	-0.18	46	6	45 %	94 %
30	Variations in Search Result Document File Name Relevancy	-0.18	8	1	39 %	84 %
31	Variations in Body Tags Relevancy	-0.18	93621	502	71 %	87 %
32	Number of H1 Tags Size	-0.18	3	1	63 %	91 %
33	Number of HTML Tags Size	-0.18	2805	969	81 %	89 %
34	Entities in the HTML Tag Relevancy	-0.18	1436	127	65 %	95 %
35	Number of Images with ALT Text Size	-0.18	366	19	62 %	89 %
36	Variations in H2 Tags Relevancy	-0.18	280	4	40 %	85 %
37	Entities in Title Tag Relevancy	-0.18	7	3	59 %	92 %
38	Variations in HTML Tags Relevancy	-0.18	93621	492	70 %	90 %
39	Variations in H1 Tags Relevancy	-0.18	20	1	46 %	84 %
40	Number of HTTPS Links Authority	-0.18	720	126	74 %	88 %
41	Number of DoFollow Links Authority	-0.18	717	124	75 %	88 %
42	Variation Count in Top 30KB Relevancy	-0.18	4928	37	58 %	86 %
43	Entities in H1 Tags	-0.18	5	2	46 %	91 %
44	Number of Links Authority	-0.18	721	127	74 %	88 %
45	Number of Internal Links Authority	-0.17	703	114	73 %	88 %
46	Leading Variations in H1, H2, and H3 Tags Relevancy	-0.17	32	2	37 %	84 %
47	Leading Variations in H1-H6 Tags Relevancy	-0.17	36	2	38 %	85 %
48	Variations in A Tags Relevancy	-0.17	9305	49	55 %	85 %
49	Variations in Search Result URL Path Relevancy	-0.17	10	1	41 %	84 %
50	Term Frequency Relevancy	-0.17	6	3	69 %	87 %
51	Search Result Number of Dirs in Path Other	-0.17	3	2	72 %	80 %
52	Variations in Search Result Link Text Relevancy	-0.17	19	2	73 %	77 %
53	Variations in Search Result Display URL Relevancy	-0.17	19	2	73 %	77 %
54	Number of Facebook Pages Authority	-0.17	6	2	50 %	85 %
55	Number of Includes Technology	-0.17	68	25	76 %	80 %
56	Variations in Sentences Relevancy	-0.17	8372	71	64 %	88 %
57	Average Words Per Sentence Size	-0.17	372	28	71 %	85 %
58	Entities in H3 Tags	-0.17	40	6	37 %	93 %
59	Number of H3 Tags Size	-0.17	26	8	53 %	85 %
60	Number of DoFollow External Links Authority	-0.17	60	12	70 %	87 %
61	Number of External Links Authority	-0.17	60	14	70 %	87 %
62	LSI Words in Sentences Relevancy	-0.17	2566	631	56 %	96 %
63	Has JSON-LD Schema Markup Relevancy	-0.17	1	1	48 %	81 %
64	Number Of JSON-LD Types Relevancy	-0.16	107	13	51 %	84 %
65	Variations in the Title Tag Relevancy	-0.16	23	2	58 %	82 %
66	Number of Images without ALT Text Size	-0.16	34	9	50 %	88 %
67	Variations in Span Tags Relevancy	-0.16	1077	12	42 %	87 %
68	Number of HTML Comments Size	-0.16	635	47	64 %	88 %
69	Has Meta Charset Technology	-0.16	1	1	68 %	85 %
70	Variations in A Tag HREF Attributes Relevancy	-0.16	2876	43	49 %	87 %
71	Variations in Main Tags Relevancy	-0.16	40166	182	34 %	86 %
72	Variations in Distinct A Tag HREF Attributes Relevancy	-0.16	1808	27	49 %	87 %
73	LSI Words in H2 Tags Relevancy	-0.16	91	18	46 %	93 %
74	Has Entities in H2 Tags Relevancy	-0.16	1	1	46 %	89 %
75	Has Entities in H1 Tags Relevancy	-0.16	1	1	46 %	88 %
76	Variations in the Canonical URL Relevancy	-0.15	50	2	42 %	82 %
77	Flesch Kincaid Reading Grade Level Other	-0.15	6	1	91 %	87 %
78	Variations in ALT Attributes Relevancy	-0.15	588	7	37 %	84 %
79	Variations in First 100 Words Relevancy	-0.15	177	6	56 %	84 %
80	Variations in Search Result URL Relevancy	-0.15	21	2	49 %	81 %
81	Variations in Absolute URLs Relevancy	-0.15	14393	104	52 %	88 %
82	Variations in H3 Tags Relevancy	-0.15	123	3	31 %	83 %
83	Exact Matches in the HTML Tag Relevancy	-0.15	301	11	29 %	86 %
84	Number of LinkedIn Pages Authority	-0.15	8	1	27 %	78 %
85	LSI Words in H1 Tags Relevancy	-0.15	11	4	47 %	93 %
86	Number of Questions In Headings Size	-0.15	7	2	34 %	84 %
87	Number of Sentences Size	-0.15	832	144	78 %	86 %
88	Leading Variations in H1 Tags Relevancy	-0.15	2	1	24 %	78 %
89	Variations in Nav Tags Relevancy	-0.15	7034	60	40 %	83 %
90	Variations in Meta Description Relevancy	-0.15	49	2	49 %	80 %
91	Variations in OpenGraph Title Relevancy	-0.15	16	1	50 %	76 %
92	Percentage of DoFollow Links Authority	-0.15	99	80	75 %	88 %
93	Uses JSON-LD name Other	-0.15	1	1	47 %	80 %
94	Number of CSS Includes Technology	-0.15	22	9	69 %	77 %
95	Variations in Section Tags Relevancy	-0.15	1250	21	32 %	89 %
96	Number of Forms Technology	-0.15	10	2	44 %	81 %
97	Number of JavaScript Includes Technology	-0.15	46	17	76 %	78 %
98	Number of US Phone Numbers Trust	-0.15	249	10	34 %	83 %
99	Leading Variations in Title Tag Relevancy	-0.15	1	1	27 %	79 %
100	Percentage of DoFollow Internal Links Authority	-0.14	92	69	73 %	84 %
101	Entities in Meta Description Tag Relevancy	-0.14	19	3	51 %	89 %
102	Number of Instagram Pages Authority	-0.14	23	2	38 %	78 %
103	Number of Facebook Accounts Authority	-0.14	3	1	23 %	80 %
104	Variations in Script Tags Relevancy	-0.14	52712	254	57 %	84 %
105	Search Result Host Length Size	-0.14	27	16	81 %	80 %
106	Number of Social Accounts Authority	-0.14	8	2	36 %	83 %
107	Clean Keyword Density in the HTML Tag Relevancy	-0.14	203	5	62 %	74 %
108	Search Result Domain Length Size	-0.14	27	16	81 %	80 %
109	Percentage of DoFollow External Links Authority	-0.14	25	12	69 %	81 %
110	Number of Social Pages Authority	-0.14	25	4	57 %	83 %
111	Variations in OpenGraph Description Relevancy	-0.14	45	2	45 %	77 %
112	Has US Phone Number Trust	-0.14	1	1	35 %	76 %
113	TF/IDF Relevancy	-0.14	2	1	51 %	83 %
114	Variation Density in Top 30KB Relevancy	-0.14	310	5	54 %	77 %
115	Has Privacy Policy Trust	-0.14	1	1	54 %	71 %
116	Headings Has Question Other	-0.14	1	1	34 %	80 %
117	Search Result Uses HTTPS Other	-0.14	1	1	81 %	84 %
118	Has Form Technology	-0.14	1	1	43 %	78 %
119	Inline CSS Kilobytes Size	-0.14	189	58	63 %	86 %
120	Exact Matches in H1-H6 Tags Relevancy	-0.14	10	1	18 %	84 %
121	LSI Words in Title Tag Relevancy	-0.14	15	5	59 %	89 %
122	Is Home Page Other	-0.14	1	1	16 %	44 %
123	LSI Words in H3 Tags Relevancy	-0.14	97	19	40 %	90 %
124	Leading Variations in H2 Tags Relevancy	-0.14	22	1	19 %	82 %
125	Uses JSON-LD url Other	-0.14	1	1	43 %	80 %
126	Number of H4 Tags Size	-0.14	23	3	31 %	82 %
127	Has Entities in H3 Tags Relevancy	-0.14	1	1	38 %	86 %
128	Uses Schema organization Other	-0.14	1	1	31 %	75 %
129	Variations making whole H1-H6 Tags Relevancy	-0.13	3	1	12 %	76 %
130	Number of Questions In H2 Tags Size	-0.13	4	1	22 %	81 %
131	Has Meta Viewport Technology	-0.13	1	1	78 %	79 %
132	Uses JSON-LD Organization Other	-0.13	1	1	28 %	76 %
133	Uses JSON-LD description Other	-0.13	1	1	37 %	76 %
134	Variations making whole H1, H2, and H3 Tags Relevancy	-0.13	3	1	11 %	76 %
135	Variations in Footer Tags Relevancy	-0.13	6817	26	31 %	83 %
136	Is Article Page Other	-0.13	1	1	39 %	72 %
137	Title Tag Has Entities Relevancy	-0.13	1	1	59 %	85 %
138	Number Of Claimed Brands Other	-0.13	60	2	21 %	81 %
139	Number of Twitter Accounts Authority	-0.13	5	1	18 %	75 %
140	Number of Absolute URLs Authority	-0.13	872	261	80 %	78 %
141	Has Canonical URL Authority	-0.13	1	1	67 %	73 %
142	LSI Words in Meta Description Tag Relevancy	-0.13	23	9	49 %	90 %
143	Title Length Size	-0.13	124	51	79 %	72 %
144	Number of Questions Size	-0.13	247	14	63 %	76 %
145	Variations in Strong Tags Relevancy	-0.13	289	3	22 %	82 %
146	Title Word Count Size	-0.13	28	8	79 %	73 %
147	Uses JSON-LD ListItem Other	-0.13	1	1	30 %	78 %
148	Entities in H4 Tags	-0.13	21	2	17 %	87 %
149	Number of Prices Size	-0.13	565	95	64 %	79 %
150	Exact Matches in Sentences Relevancy	-0.13	37	3	20 %	87 %
151	Number of Questions In H3 Tags Size	-0.13	4	1	17 %	80 %
152	Meta Description Length Size	-0.13	456	116	64 %	75 %
153	Has Apple Touch Icon Technology	-0.13	1	1	46 %	73 %
154	Uses JSON-LD BreadcrumbList Other	-0.13	1	1	30 %	77 %
155	Search Result URL Length Size	-0.13	96	62	95 %	61 %
156	Page Size Kilobytes Size	-0.13	804	326	80 %	70 %
157	Number of H5 Tags Size	-0.12	9	2	15 %	78 %
158	Exact Matches in Top 30KB Relevancy	-0.12	14	2	16 %	82 %
159	Has Meta Robots Other	-0.12	1	1	24 %	74 %
160	Has Schema Markup Relevancy	-0.12	1	1	59 %	70 %
161	Has Contact Page Trust	-0.12	1	1	57 %	71 %
162	Variations Making Whole Span Tags Relevancy	-0.12	5	1	16 %	82 %
163	Is OpenGraph Type Article Technology	-0.12	1	1	29 %	63 %
164	Uses JSON-LD datePublished Other	-0.12	1	1	31 %	68 %
165	Word Count in Meta Description Size	-0.12	65	19	64 %	77 %
166	Number of Email Addresses Trust	-0.12	53	4	38 %	80 %
167	Has HREF Lang Technology	-0.12	1	1	13 %	70 %
168	Variations making whole A Tags Relevancy	-0.12	115	2	22 %	79 %
169	Has Terms of Service Trust	-0.12	1	1	39 %	63 %
170	Search Result Summary Length Size	-0.12	163	152	95 %	70 %
171	Exact Matches in Title Tag Relevancy	-0.12	1	1	16 %	81 %
172	Variations Making Whole LI Tags Relevancy	-0.12	7	1	18 %	81 %
173	Uses Schema name Other	-0.12	1	1	56 %	69 %
174	Has OpenGraph Type Relevancy	-0.12	1	1	58 %	70 %
175	Has OpenGraph Image Relevancy	-0.12	1	1	52 %	68 %
176	Number of HREF Lang Tags Size	-0.12	46	2	12 %	77 %
177	Has Google Verify Technology	-0.12	1	1	18 %	73 %
178	Uses JSON-LD ImageObject Other	-0.12	1	1	28 %	74 %
179	Uses Schema webpage Other	-0.12	1	1	30 %	71 %
180	Uses JSON-LD WebSite Other	-0.12	1	1	26 %	72 %
181	Uses Schema website Other	-0.12	1	1	30 %	69 %
182	Variations in I Tags Relevancy	-0.12	568	5	17 %	79 %
183	Uses JSON-LD Answer Other	-0.12	1	1	9 %	66 %
184	Uses JSON-LD Question Other	-0.12	1	1	9 %	66 %
185	Variations in Article Tags Relevancy	-0.12	3771	21	21 %	76 %
186	Number of Nofollow Links Authority	-0.12	18	3	21 %	78 %
187	Uses Schema answer Other	-0.12	1	1	10 %	66 %
188	Inline JavaScript Kilobytes Size	-0.12	534	136	75 %	61 %
189	Uses Schema logo Other	-0.12	1	1	11 %	65 %
190	Uses Schema url Other	-0.12	1	1	52 %	66 %
191	Uses Schema question Other	-0.12	1	1	10 %	66 %
192	Has Meta Description Relevancy	-0.12	1	1	63 %	72 %
193	Uses Schema datemodified Other	-0.12	1	1	29 %	67 %
194	Uses JSON-LD FAQPage Other	-0.12	1	1	8 %	66 %
195	Uses Schema faqpage Other	-0.12	1	1	9 %	65 %
196	Uses JSON-LD streetAddress Other	-0.12	1	1	14 %	63 %
197	Uses JSON-LD logo Other	-0.12	1	1	10 %	65 %
198	Uses Schema postalcode Other	-0.12	1	1	15 %	63 %
199	Uses JSON-LD WebPage Other	-0.12	1	1	28 %	73 %
200	Variations in Meta Twitter Content Relevancy	-0.12	12	1	26 %	64 %

Measures 150708 SEO Factors

148986 Built-In SEO Factors

139784 On-page SEO Factors

9202 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 2026-05 previous