Measures 146649 SEO Factors

144927 Built-In SEO Factors

135790 On-page SEO Factors

9137 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.

[ Ahrefs, SEMRush, DomDetailer, SpyFu APIs ]

1575 Technology Stack SEO Factors

[ Wappalyzer API ]

The Cora Shared Data contains over 300 million SEO factor measurements and grows hourly.

Google Maps and Bing Factors are not yet available for viewing but will be coming soon!
Aggregate SEO Weather Top SEO Factors - Aggregate SEO Weather

TOP SEO Factors for 2025-11     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique LSI Words Used   Diversity-0.23134533182 %79 %
2Entities in Title Tag   Relevancy-0.227369 %94 %
3Number of Distinct Entities Used   Diversity-0.221063079 %95 %
4Number of Top 200 Shared Factors Used   Diversity-0.21523998 %94 %
5Number of Unique Variations Used   Diversity-0.2129778 %89 %
6Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
7Load Time Milliseconds   Performance-0.2132075145584 %91 %
8Search Result Domain is .com, .net, or .org   Other-0.21115 %74 %
9Number of Top 50 Shared Factors Used   Diversity-0.21171298 %93 %
10Search Result Domain is .com   Other-0.2114 %74 %
11Entities in the HTML Tag   Relevancy-0.274615474 %96 %
12Entities in Sentences   Relevancy-0.266915171 %95 %
13Variations in H1-H6 Tags   Relevancy-0.224864 %87 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.1921763 %87 %
15Entities in H1 Tags-0.196257 %91 %
16Variations in Div Tags   Relevancy-0.1962510973 %92 %
17Variations in H1 and H2 Tags   Relevancy-0.1911461 %86 %
18Variations in Body Tags   Relevancy-0.19179922177 %90 %
19Variations in P Tags   Relevancy-0.191313066 %89 %
20Variations in HTML Tags   Relevancy-0.19179921876 %91 %
21Entities in H2 Tags-0.1931754 %92 %
22Variations in Search Result Document File Name   Relevancy-0.183143 %80 %
23Number of Factors Used   Diversity-0.1833917998 %89 %
24Number of Referring Domains   Authority-0.18170812351 %67 %
25Variations in LI Tags   Relevancy-0.181722164 %89 %
26Term Frequency   Relevancy-0.184376 %89 %
27Number of Backlinks   Authority-0.18124727642551 %68 %
28Variations in Sentences   Relevancy-0.182153370 %88 %
29Variations in A Tags   Relevancy-0.181402265 %86 %
30Variations in Search Result URL Path   Relevancy-0.183145 %82 %
31Variation Count in Top 30KB   Relevancy-0.18771865 %85 %
32Clean Keyword Density in the HTML Tag   Relevancy-0.1816368 %80 %
33Variations in the Title Tag   Relevancy-0.183264 %86 %
34Number of Do Follow Backlinks   Authority-0.18122239574447 %67 %
35Unabridged Word Count   Size-0.175159184784 %88 %
36Clean Text Kilobytes   Size-0.17321276 %87 %
37Word Count   Size-0.173797146784 %87 %
38Leading Variations in H1-H6 Tags   Relevancy-0.1714245 %87 %
39Number of Images   Size-0.173063477 %88 %
40LSI Words in Sentences   Relevancy-0.17370376664 %95 %
41Variations in Search Result Link Text   Relevancy-0.173280 %82 %
42Number of HTML Tags   Size-0.173693110284 %88 %
43Variations in Search Result Display URL   Relevancy-0.173280 %82 %
44Entities in H3 Tags-0.1743845 %92 %
45Variations in the Canonical URL   Relevancy-0.177247 %84 %
46Variations in First 100 Words   Relevancy-0.1717663 %86 %
47Number of Includes   Technology-0.17552780 %80 %
48Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711242 %87 %
49Variations in H1 Tags   Relevancy-0.173153 %86 %
50Variations in H2 Tags   Relevancy-0.1711346 %84 %
51Number of Images with ALT Text   Size-0.172792372 %86 %
52Has Entities in H1 Tags   Relevancy-0.171157 %87 %
53Entities in Meta Description Tag   Relevancy-0.178359 %90 %
54Variations in A Tag HREF Attributes   Relevancy-0.173233959 %90 %
55Number of Heading Tags   Size-0.17672376 %85 %
56Search Result Number of Dirs in Path   Other-0.174272 %77 %
57Variations in Distinct A Tag HREF Attributes   Relevancy-0.172442359 %90 %
58Number of P Tags   Size-0.171354075 %88 %
59Variations in Meta Description   Relevancy-0.164254 %83 %
60TF/IDF   Relevancy-0.161157 %85 %
61Variation Density in Top 30KB   Relevancy-0.167259 %82 %
62Title Tag Has Entities   Relevancy-0.161168 %87 %
63Number of No Follow Backlinks   Authority-0.161967370339 %65 %
64Number of DoFollow Links   Authority-0.1640914780 %86 %
65Number of HTTPS Links   Authority-0.1641915080 %86 %
66Variations in Absolute URLs   Relevancy-0.163105160 %88 %
67Number of Links   Authority-0.1642215180 %85 %
68Variations in ALT Attributes   Relevancy-0.1655745 %84 %
69Variations in Span Tags   Relevancy-0.1641950 %89 %
70Number of Internal Links   Authority-0.1638913680 %86 %
71Variations in Search Result URL   Relevancy-0.164254 %77 %
72Variations in Main Tags   Relevancy-0.164845936 %86 %
73Leading Variations in Title Tag   Relevancy-0.161130 %80 %
74Variations in OpenGraph Description   Relevancy-0.164249 %80 %
75Percentage of DoFollow Links   Authority-0.16988280 %87 %
76Number of Forms   Technology-0.1619354 %83 %
77Number of CSS Includes   Technology-0.16261073 %77 %
78LSI Words in Title Tag   Relevancy-0.1616665 %94 %
79Number of H1 Tags   Size-0.1611270 %88 %
80Variations in OpenGraph Title   Relevancy-0.163153 %79 %
81Number of Facebook Pages   Authority-0.1616259 %80 %
82Percentage of DoFollow Internal Links   Authority-0.16907279 %85 %
83Number of External Links   Authority-0.16671577 %85 %
84Exact Matches in the HTML Tag   Relevancy-0.168261227 %83 %
85LSI Words in H1 Tags   Relevancy-0.1617456 %94 %
86Number of Images without ALT Text   Size-0.15601159 %86 %
87Has Form   Technology-0.151153 %78 %
88Number of DoFollow External Links   Authority-0.15641376 %84 %
89Number of HTML Comments   Size-0.157075772 %83 %
90Has Entities in H2 Tags   Relevancy-0.151154 %85 %
91Variations in Script Tags   Relevancy-0.158536962 %83 %
92Number of H2 Tags   Size-0.1521768 %86 %
93Average Words Per Sentence   Size-0.152293278 %82 %
94Leading Variations in H1 Tags   Relevancy-0.151126 %81 %
95Number of Sentences   Size-0.1569713082 %83 %
96Has Meta Charset   Technology-0.151174 %83 %
97Has JSON-LD Schema Markup   Relevancy-0.151154 %77 %
98Number of JavaScript Includes   Technology-0.15441881 %81 %
99Flesch Kincaid Reading Grade Level   Other-0.156295 %86 %
100Variations in Nav Tags   Relevancy-0.152372446 %84 %
101Number of H3 Tags   Size-0.1533961 %84 %
102Variations in H3 Tags   Relevancy-0.1416335 %83 %
103Search Result Domain Length   Size-0.14251783 %80 %
104Search Result Host Length   Size-0.14251783 %80 %
105LSI Words in Meta Description Tag   Relevancy-0.14361054 %91 %
106LSI Words in H2 Tags   Relevancy-0.14862054 %92 %
107Entities in H4 Tags-0.1419222 %89 %
108Exact Matches in H1-H6 Tags   Relevancy-0.1411117 %83 %
109Variations in Footer Tags   Relevancy-0.1463735 %83 %
110Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
111Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %78 %
112Inline CSS Kilobytes   Size-0.141916165 %82 %
113Variations in Section Tags   Relevancy-0.14911736 %84 %
114Number of Questions In Headings   Size-0.148237 %83 %
115Has Entities in H3 Tags   Relevancy-0.141146 %83 %
116Has Meta Viewport   Technology-0.141181 %82 %
117Number Of JSON-LD Types   Relevancy-0.141181457 %82 %
118Number of Absolute URLs   Authority-0.1499029083 %80 %
119Has Canonical URL   Authority-0.141171 %79 %
120Number of Questions   Size-0.14811167 %77 %
121Search Result Uses HTTPS   Other-0.141183 %84 %
122Leading Variations in H2 Tags   Relevancy-0.146122 %82 %
123Number of Prices   Size-0.1429627370 %81 %
124Percentage of DoFollow External Links   Authority-0.14301074 %80 %
125Page Size Kilobytes   Size-0.14110532083 %77 %
126Number of Email Addresses   Trust-0.14280544 %80 %
127Word Count in Meta Description   Size-0.14381967 %77 %
128Number of Social Pages   Authority-0.1430465 %80 %
129Has Email   Trust-0.141143 %71 %
130Meta Description Length   Size-0.1321711967 %78 %
131Has FavIcon   Technology-0.131175 %77 %
132Number of Instagram Pages   Authority-0.1312245 %77 %
133Has Privacy Policy   Trust-0.131159 %74 %
134LSI Words in H3 Tags   Relevancy-0.131272248 %90 %
135Number of LinkedIn Pages   Authority-0.137133 %76 %
136Search Result URL Length   Size-0.13936298 %62 %
137Variations in the last 100 words   Relevancy-0.1315345 %80 %
138Variations in Meta Twitter Description   Relevancy-0.134124 %73 %
139Is Store Page   Other-0.131146 %68 %
140Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
141Has Meta Description   Relevancy-0.131166 %73 %
142Number of Nofollow Links   Authority-0.1344525 %76 %
143Meta Description Tag Has Entities   Relevancy-0.131158 %82 %
144Uses JSON-LD name   Other-0.131153 %77 %
145Variations Making Whole LI Tags   Relevancy-0.135125 %78 %
146Headings Has Question   Other-0.131137 %77 %
147Is Home Page   Other-0.131120 %44 %
148Has OpenGraph Type   Relevancy-0.131162 %71 %
149Variations in I Tags   Relevancy-0.1317423 %80 %
150Number of Facebook Accounts   Authority-0.133129 %78 %
151Number of H4 Tags   Size-0.1320437 %81 %
152Variations making whole A Tags   Relevancy-0.138129 %77 %
153Has Meta Twitter Card   Authority-0.131152 %65 %
154Title Length   Size-0.131225081 %78 %
155Number of US Phone Numbers   Trust-0.136671242 %81 %
156Is Purchase Page   Other-0.131147 %66 %
157Has OpenGraph Image   Relevancy-0.131155 %69 %
158Variations in Strong Tags   Relevancy-0.1315325 %79 %
159Has Contact Page   Trust-0.131163 %70 %
160Number of Social Accounts   Authority-0.1310243 %78 %
161Has Schema Markup   Relevancy-0.131164 %74 %
162Has Terms of Service   Trust-0.131141 %68 %
163Title Word Count   Size-0.1318881 %76 %
164Number of Questions In H3 Tags   Size-0.135117 %76 %
165Inline JavaScript Kilobytes   Size-0.1358711680 %72 %
166Exact Matches in Top 30KB   Relevancy-0.1324216 %78 %
167Uses JSON-LD CollectionPage   Other-0.13115 %33 %
168Has US Phone Number   Trust-0.121141 %72 %
169Variations Making Whole Span Tags   Relevancy-0.127119 %81 %
170Uses Schema collectionpage   Other-0.12115 %33 %
171Uses Schema name   Other-0.121160 %71 %
172Variations making whole H1 Tags   Relevancy-0.12118 %78 %
173Variations in TITLE Attributes   Relevancy-0.1287535 %80 %
174Uses JSON-LD url   Other-0.121147 %76 %
175Exact Matches in Sentences   Relevancy-0.1242218 %83 %
176Variations in H4-H6 Tags   Relevancy-0.1216118 %80 %
177Has Meta Twitter Description   Authority-0.121130 %58 %
178Is Pagination Page   Other-0.121119 %65 %
179Uses Schema url   Other-0.121155 %68 %
180Variations in ID Attributes   Relevancy-0.1210213 %81 %
181Percentage of NoFollow Links   Authority-0.1215322 %74 %
182Variations in Button Tags   Relevancy-0.12125210 %81 %
183Has Google Verify   Technology-0.121123 %65 %
184Has Entities in H4 Tags   Relevancy-0.121123 %78 %
185Uses JSON-LD ItemList   Other-0.12114 %44 %
186Number of Questions In H2 Tags   Size-0.124123 %74 %
187Has Meta Twitter Title   Authority-0.121132 %59 %
188Uses Schema itemlist   Other-0.12114 %45 %
189Leading Variations in H3 Tags   Relevancy-0.125116 %77 %
190Number of NoFollow External Links   Authority-0.1221317 %75 %
191Uses Schema organization   Other-0.121135 %67 %
192Uses JSON-LD ListItem   Other-0.121134 %71 %
193Is Article Page   Other-0.121142 %67 %
194Number of Twitter Accounts   Authority-0.122125 %70 %
195Exact Matches in Title Tag   Relevancy-0.122115 %80 %
196Is Category Page   Other-0.121115 %66 %
197Variations in H4 Tags   Relevancy-0.125114 %78 %
198Has Apple Touch Icon   Technology-0.121152 %73 %
199LSI Words in H4 Tags   Relevancy-0.1273728 %87 %
200Uses Schema sku   Other-0.12115 %28 %