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	-0.24	975	291	81 %	78 %
2	Search Result Domain is .com, .net, or .org Other	-0.23	1	1	6 %	84 %
3	Load Time Milliseconds Performance	-0.23	29874	1466	82 %	94 %
4	Search Result Domain is .com Other	-0.22	1	1	6 %	84 %
5	Number of Top 100 Shared Factors Used Diversity	-0.21	38	27	97 %	96 %
6	Number of Top 200 Shared Factors Used Diversity	-0.21	51	36	97 %	95 %
7	Number of Top 50 Shared Factors Used Diversity	-0.21	16	11	96 %	94 %
8	Variations in H1, H2, and H3 Tags Relevancy	-0.2	378	8	54 %	90 %
9	Variations in H1-H6 Tags Relevancy	-0.2	409	9	55 %	90 %
10	Number of Unique Variations Used Diversity	-0.2	20	6	73 %	92 %
11	Variations in H1 and H2 Tags Relevancy	-0.19	287	5	53 %	91 %
12	Variations in Div Tags Relevancy	-0.19	68329	520	66 %	92 %
13	Variations in P Tags Relevancy	-0.19	4557	69	57 %	92 %
14	Number of Heading Tags Size	-0.19	49	21	68 %	89 %
15	Variations in Body Tags Relevancy	-0.19	93621	719	71 %	90 %
16	Word Count Size	-0.18	6928	1479	82 %	91 %
17	Number of Referring Domains Authority	-0.18	3169	158	47 %	75 %
18	Number of Backlinks Authority	-0.18	382197	9708	47 %	76 %
19	Variations in HTML Tags Relevancy	-0.18	93621	712	70 %	91 %
20	Number of Distinct Entities Used Diversity	-0.18	61	26	72 %	96 %
21	Variations in LI Tags Relevancy	-0.18	15771	73	54 %	89 %
22	Unabridged Word Count Size	-0.18	10152	1920	82 %	91 %
23	Number of Factors Used Diversity	-0.18	272	167	97 %	90 %
24	Number of P Tags Size	-0.18	123	38	67 %	89 %
25	Clean Text Kilobytes Size	-0.18	67	13	68 %	91 %
26	Entities in Title Tag Relevancy	-0.18	7	3	59 %	94 %
27	Entities in Sentences Relevancy	-0.18	1308	128	61 %	95 %
28	Variations in H1 Tags Relevancy	-0.18	20	1	46 %	85 %
29	Entities in the HTML Tag Relevancy	-0.18	1436	131	66 %	95 %
30	Number of Images Size	-0.18	309	29	68 %	90 %
31	Number of H2 Tags Size	-0.18	23	7	61 %	90 %
32	Number of Do Follow Backlinks Authority	-0.18	377721	8402	44 %	74 %
33	Number of HTML Tags Size	-0.18	2805	1025	82 %	89 %
34	Leading Variations in H1, H2, and H3 Tags Relevancy	-0.17	32	2	36 %	85 %
35	Variations in Search Result Document File Name Relevancy	-0.17	8	1	38 %	85 %
36	Entities in H2 Tags	-0.17	46	7	45 %	96 %
37	Term Frequency Relevancy	-0.17	6	3	70 %	90 %
38	Number of H1 Tags Size	-0.17	3	1	64 %	92 %
39	Leading Variations in H1-H6 Tags Relevancy	-0.17	36	2	38 %	86 %
40	Variations in H2 Tags Relevancy	-0.17	280	4	40 %	90 %
41	LSI Words in Sentences Relevancy	-0.17	2378	692	58 %	96 %
42	Number of Images with ALT Text Size	-0.17	304	20	63 %	88 %
43	Entities in H1 Tags	-0.17	5	2	46 %	92 %
44	Number of No Follow Backlinks Authority	-0.17	61104	1608	35 %	69 %
45	Search Result Number of Dirs in Path Other	-0.17	3	2	72 %	82 %
46	Number of DoFollow Links Authority	-0.17	614	132	74 %	89 %
47	Variations in Sentences Relevancy	-0.17	8372	95	64 %	91 %
48	Number of HTTPS Links Authority	-0.17	623	134	74 %	89 %
49	Number of Includes Technology	-0.17	68	26	76 %	79 %
50	Number of Links Authority	-0.17	624	135	74 %	89 %
51	Variations in Search Result Display URL Relevancy	-0.17	19	2	72 %	80 %
52	Variations in Search Result Link Text Relevancy	-0.17	19	2	72 %	80 %
53	Number of Internal Links Authority	-0.17	619	122	73 %	88 %
54	Variation Count in Top 30KB Relevancy	-0.17	4928	50	58 %	89 %
55	Variations in A Tags Relevancy	-0.17	9305	72	55 %	88 %
56	Variations in Search Result URL Path Relevancy	-0.17	10	1	41 %	85 %
57	Variations in the Title Tag Relevancy	-0.17	23	2	59 %	84 %
58	Number of H3 Tags Size	-0.16	26	9	54 %	85 %
59	LSI Words in H2 Tags Relevancy	-0.16	91	20	49 %	94 %
60	Entities in H3 Tags	-0.16	40	7	38 %	94 %
61	Average Words Per Sentence Size	-0.16	172	29	72 %	87 %
62	Variations in Span Tags Relevancy	-0.16	1077	16	42 %	88 %
63	Number of Facebook Pages Authority	-0.16	4	2	51 %	83 %
64	Number of DoFollow External Links Authority	-0.16	60	13	70 %	87 %
65	Number of HTML Comments Size	-0.16	521	47	64 %	88 %
66	Number of External Links Authority	-0.16	60	15	71 %	88 %
67	LSI Words in H1 Tags Relevancy	-0.16	10	4	50 %	95 %
68	Variations in Main Tags Relevancy	-0.16	40166	279	34 %	88 %
69	Has JSON-LD Schema Markup Relevancy	-0.16	1	1	49 %	82 %
70	Variations in A Tag HREF Attributes Relevancy	-0.15	2876	53	49 %	89 %
71	Number of Images without ALT Text Size	-0.15	34	9	51 %	87 %
72	Number Of JSON-LD Types Relevancy	-0.15	63	14	51 %	85 %
73	Leading Variations in H1 Tags Relevancy	-0.15	2	1	23 %	80 %
74	Variations in Distinct A Tag HREF Attributes Relevancy	-0.15	1808	34	49 %	89 %
75	Variations in ALT Attributes Relevancy	-0.15	588	8	38 %	86 %
76	Variations in Script Tags Relevancy	-0.15	52712	375	58 %	88 %
77	LSI Words in Title Tag Relevancy	-0.15	15	5	61 %	90 %
78	Variations in Search Result URL Relevancy	-0.15	21	2	49 %	81 %
79	Variations in Absolute URLs Relevancy	-0.15	14393	149	53 %	90 %
80	Variations in the Canonical URL Relevancy	-0.15	50	2	42 %	85 %
81	Has Meta Charset Technology	-0.15	1	1	69 %	85 %
82	Variations in First 100 Words Relevancy	-0.15	177	6	56 %	86 %
83	Number of Sentences Size	-0.15	612	149	78 %	87 %
84	Variations in OpenGraph Title Relevancy	-0.15	16	1	50 %	81 %
85	Has Entities in H1 Tags Relevancy	-0.15	1	1	47 %	90 %
86	Variations in Section Tags Relevancy	-0.15	1250	26	32 %	90 %
87	Flesch Kincaid Reading Grade Level Other	-0.15	6	1	92 %	87 %
88	Exact Matches in the HTML Tag Relevancy	-0.15	301	12	29 %	88 %
89	Number of CSS Includes Technology	-0.15	22	9	69 %	79 %
90	Has Entities in H2 Tags Relevancy	-0.15	1	1	46 %	90 %
91	Percentage of DoFollow Links Authority	-0.15	99	79	75 %	91 %
92	Leading Variations in Title Tag Relevancy	-0.15	1	1	27 %	81 %
93	Number of JavaScript Includes Technology	-0.15	46	18	76 %	79 %
94	Clean Keyword Density in the HTML Tag Relevancy	-0.14	203	6	62 %	78 %
95	Variations in H3 Tags Relevancy	-0.14	123	4	31 %	85 %
96	Percentage of DoFollow Internal Links Authority	-0.14	92	68	73 %	86 %
97	Variations in Nav Tags Relevancy	-0.14	7034	89	40 %	86 %
98	Number of Forms Technology	-0.14	10	2	45 %	82 %
99	Variations in Meta Description Relevancy	-0.14	49	2	49 %	82 %
100	Percentage of DoFollow External Links Authority	-0.14	25	12	69 %	81 %
101	Number of Instagram Pages Authority	-0.14	23	2	39 %	76 %
102	Number of US Phone Numbers Trust	-0.14	249	10	35 %	82 %
103	Is Home Page Other	-0.14	1	1	17 %	38 %
104	Entities in Meta Description Tag Relevancy	-0.14	19	3	51 %	90 %
105	Variations in OpenGraph Description Relevancy	-0.14	45	2	44 %	80 %
106	Search Result Domain Length Size	-0.14	24	16	81 %	82 %
107	Search Result Host Length Size	-0.14	24	16	81 %	82 %
108	Uses JSON-LD name Other	-0.14	1	1	49 %	81 %
109	Number of LinkedIn Pages Authority	-0.14	8	1	29 %	78 %
110	Variation Density in Top 30KB Relevancy	-0.14	310	7	55 %	82 %
111	Inline CSS Kilobytes Size	-0.14	189	60	63 %	87 %
112	Number of Questions In Headings Size	-0.14	7	2	33 %	85 %
113	LSI Words in H3 Tags Relevancy	-0.14	97	21	42 %	90 %
114	Has Privacy Policy Trust	-0.14	1	1	57 %	74 %
115	Leading Variations in H2 Tags Relevancy	-0.14	22	1	19 %	85 %
116	TF/IDF Relevancy	-0.14	2	1	52 %	88 %
117	Has US Phone Number Trust	-0.14	1	1	36 %	75 %
118	Number of Facebook Accounts Authority	-0.14	2	1	24 %	79 %
119	Variations making whole H1-H6 Tags Relevancy	-0.14	3	1	12 %	79 %
120	Variations making whole H1, H2, and H3 Tags Relevancy	-0.14	3	1	11 %	77 %
121	Search Result Uses HTTPS Other	-0.14	1	1	81 %	86 %
122	Has Form Technology	-0.14	1	1	45 %	78 %
123	Exact Matches in H1-H6 Tags Relevancy	-0.14	8	1	18 %	87 %
124	Number of Social Accounts Authority	-0.13	8	2	37 %	81 %
125	Number of Social Pages Authority	-0.13	25	4	58 %	80 %
126	LSI Words in Meta Description Tag Relevancy	-0.13	23	9	51 %	91 %
127	Title Word Count Size	-0.13	28	8	79 %	74 %
128	Number of H4 Tags Size	-0.13	23	4	31 %	83 %
129	Number of Absolute URLs Authority	-0.13	872	273	81 %	82 %
130	Has Meta Viewport Technology	-0.13	1	1	79 %	82 %
131	Title Length Size	-0.13	100	51	79 %	74 %
132	Uses JSON-LD url Other	-0.13	1	1	44 %	80 %
133	Headings Has Question Other	-0.13	1	1	34 %	79 %
134	Number of Prices Size	-0.13	565	101	65 %	82 %
135	Title Tag Has Entities Relevancy	-0.13	1	1	60 %	87 %
136	Has Entities in H3 Tags Relevancy	-0.13	1	1	38 %	87 %
137	Number of Questions Size	-0.13	247	15	63 %	78 %
138	Has Canonical URL Authority	-0.13	1	1	68 %	76 %
139	Variations in Footer Tags Relevancy	-0.13	6817	39	31 %	84 %
140	Uses Schema organization Other	-0.13	1	1	31 %	75 %
141	Uses JSON-LD Organization Other	-0.13	1	1	28 %	75 %
142	Page Size Kilobytes Size	-0.13	767	343	80 %	74 %
143	Variations in Strong Tags Relevancy	-0.13	289	4	23 %	81 %
144	Exact Matches in Sentences Relevancy	-0.13	37	3	21 %	88 %
145	Number Of Claimed Brands Other	-0.13	60	2	22 %	81 %
146	Uses JSON-LD ListItem Other	-0.13	1	1	30 %	76 %
147	Number of Questions In H2 Tags Size	-0.12	3	1	22 %	81 %
148	Uses JSON-LD description Other	-0.12	1	1	37 %	75 %
149	Meta Description Length Size	-0.12	456	116	64 %	77 %
150	Has Terms of Service Trust	-0.12	1	1	41 %	70 %
151	Variations making whole A Tags Relevancy	-0.12	115	2	23 %	81 %
152	Entities in H4 Tags	-0.12	21	2	17 %	88 %
153	Has Meta Robots Other	-0.12	1	1	24 %	75 %
154	Word Count in Meta Description Size	-0.12	65	19	64 %	78 %
155	Uses JSON-LD BreadcrumbList Other	-0.12	1	1	30 %	77 %
156	Has Contact Page Trust	-0.12	1	1	58 %	73 %
157	Inline JavaScript Kilobytes Size	-0.12	534	141	75 %	66 %
158	Number of Twitter Accounts Authority	-0.12	5	1	19 %	73 %
159	Variations Making Whole LI Tags Relevancy	-0.12	7	1	18 %	81 %
160	Variations Making Whole Span Tags Relevancy	-0.12	5	1	16 %	84 %
161	Number of Questions In H3 Tags Size	-0.12	4	1	17 %	80 %
162	Uses Schema product Other	-0.12	1	1	8 %	49 %
163	Has Schema Markup Relevancy	-0.12	1	1	60 %	71 %
164	Variations in I Tags Relevancy	-0.12	568	7	17 %	78 %
165	Has Google Verify Technology	-0.12	1	1	18 %	71 %
166	Exact Matches in Top 30KB Relevancy	-0.12	14	2	16 %	85 %
167	Uses Schema addresslocality Other	-0.12	1	1	16 %	60 %
168	Uses JSON-LD logo Other	-0.12	1	1	11 %	64 %
169	Uses Schema logo Other	-0.12	1	1	12 %	64 %
170	Has OpenGraph Image Relevancy	-0.12	1	1	52 %	70 %
171	Is Article Page Other	-0.12	1	1	38 %	71 %
172	Uses JSON-LD Product Other	-0.12	1	1	7 %	50 %
173	Exact Matches in Title Tag Relevancy	-0.12	1	1	16 %	83 %
174	Number of Email Addresses Trust	-0.12	22	4	39 %	80 %
175	Number of H5 Tags Size	-0.12	9	2	15 %	78 %
176	Uses JSON-LD streetAddress Other	-0.12	1	1	15 %	61 %
177	Has Meta Description Relevancy	-0.12	1	1	63 %	73 %
178	Search Result URL Length Size	-0.12	93	62	96 %	59 %
179	Uses Schema postalcode Other	-0.12	1	1	15 %	60 %
180	Search Result Summary Length Size	-0.12	161	152	97 %	64 %
181	Uses Schema sku Other	-0.12	1	1	5 %	27 %
182	Uses JSON-LD addressLocality Other	-0.12	1	1	16 %	61 %
183	Uses JSON-LD postalCode Other	-0.12	1	1	15 %	60 %
184	Uses Schema postaladdress Other	-0.12	1	1	16 %	61 %
185	Uses Schema state Other	-0.12	1	1	3 %	17 %
186	Number of Nofollow Links Authority	-0.12	18	4	21 %	78 %
187	Uses Schema streetaddress Other	-0.12	1	1	15 %	61 %
188	Is Category Page Other	-0.12	1	1	16 %	68 %
189	Has OpenGraph Type Relevancy	-0.12	1	1	59 %	74 %
190	Uses Schema aggregaterating Other	-0.12	1	1	8 %	63 %
191	Uses JSON-LD sku Other	-0.12	1	1	5 %	26 %
192	Has HREF Lang Technology	-0.12	1	1	15 %	68 %
193	Uses JSON-LD PostalAddress Other	-0.12	1	1	15 %	63 %
194	Has Apple Touch Icon Technology	-0.12	1	1	46 %	72 %
195	Variations in Button Tags Relevancy	-0.12	5433	34	10 %	83 %
196	Number of HREF Lang Tags Size	-0.12	46	3	13 %	76 %
197	Uses Schema name Other	-0.12	1	1	56 %	72 %
198	Variations in TITLE Attributes Relevancy	-0.12	1571	10	31 %	79 %
199	Uses Schema telephone Other	-0.12	1	1	17 %	64 %
200	Has Meta Twitter Card Authority	-0.12	1	1	51 %	62 %

Measures 150600 SEO Factors

148878 Built-In SEO Factors

139676 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