Measures 146654 SEO Factors

144932 Built-In SEO Factors

135795 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-0.23134532982 %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-0.21523898 %94 %
5Load Time Milliseconds   Performance-0.2132075148684 %91 %
6Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
7Number of Unique Variations Used   Diversity-0.2129778 %89 %
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-0.274615374 %96 %
12Entities in Sentences   Relevancy-0.266915071 %95 %
13Variations in H1-H6 Tags   Relevancy-0.1924864 %87 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.1921763 %87 %
15Entities in H1 Tags-0.196257 %91 %
16Variations in Div Tags   Relevancy-0.1968710873 %92 %
17Variations in H1 and H2 Tags   Relevancy-0.1911461 %86 %
18Variations in Body Tags   Relevancy-0.19179921877 %90 %
19Variations in P Tags   Relevancy-0.191313065 %89 %
20Entities in H2 Tags-0.1931754 %92 %
21Variations in HTML Tags   Relevancy-0.19179921576 %91 %
22Number of Factors Used   Diversity-0.1833917998 %89 %
23Number of Referring Domains   Authority-0.18170812351 %68 %
24Variations in Search Result Document File Name   Relevancy-0.183143 %80 %
25Variations in LI Tags   Relevancy-0.181722164 %89 %
26Number of Backlinks   Authority-0.18124727621051 %69 %
27Term Frequency   Relevancy-0.184376 %89 %
28Variations in Sentences   Relevancy-0.182153370 %88 %
29Variations in A Tags   Relevancy-0.181402264 %86 %
30Number of Do Follow Backlinks   Authority-0.18122239553946 %67 %
31Variations in Search Result URL Path   Relevancy-0.183145 %81 %
32Variation Count in Top 30KB   Relevancy-0.18771864 %85 %
33Clean Keyword Density in the HTML Tag   Relevancy-0.1716368 %80 %
34Variations in the Title Tag   Relevancy-0.173263 %86 %
35Unabridged Word Count   Size-0.178156185584 %88 %
36Word Count   Size-0.176250147384 %87 %
37Clean Text Kilobytes   Size-0.17661376 %88 %
38Number of Images   Size-0.173063377 %88 %
39Leading Variations in H1-H6 Tags   Relevancy-0.1714244 %87 %
40LSI Words in Sentences   Relevancy-0.17370376764 %95 %
41Number of HTML Tags   Size-0.173693110084 %88 %
42Number of Includes   Technology-0.17552780 %80 %
43Entities in H3 Tags-0.1743845 %93 %
44Variations in Search Result Link Text   Relevancy-0.173279 %82 %
45Variations in Search Result Display URL   Relevancy-0.173279 %82 %
46Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711242 %87 %
47Variations in H2 Tags   Relevancy-0.1711346 %84 %
48Variations in H1 Tags   Relevancy-0.173153 %86 %
49Variations in First 100 Words   Relevancy-0.1717563 %85 %
50Variations in the Canonical URL   Relevancy-0.177247 %84 %
51Number of Images with ALT Text   Size-0.172792372 %86 %
52Entities in Meta Description Tag   Relevancy-0.178359 %90 %
53Has Entities in H1 Tags   Relevancy-0.171157 %87 %
54Number of Heading Tags   Size-0.17672376 %85 %
55Search Result Number of Dirs in Path   Other-0.174272 %77 %
56Number of P Tags   Size-0.171354075 %88 %
57Variations in A Tag HREF Attributes   Relevancy-0.173233858 %90 %
58Variations in Distinct A Tag HREF Attributes   Relevancy-0.162442358 %90 %
59Variations in Meta Description   Relevancy-0.164253 %83 %
60Number of No Follow Backlinks   Authority-0.161967368839 %66 %
61TF/IDF   Relevancy-0.161156 %85 %
62Title Tag Has Entities   Relevancy-0.161168 %88 %
63Number of DoFollow Links   Authority-0.1640914780 %86 %
64Number of HTTPS Links   Authority-0.1641915080 %86 %
65Variation Density in Top 30KB   Relevancy-0.167259 %82 %
66Number of Links   Authority-0.1642215180 %86 %
67Variations in ALT Attributes   Relevancy-0.1655744 %84 %
68Number of Internal Links   Authority-0.1638913680 %86 %
69Variations in Span Tags   Relevancy-0.1641950 %89 %
70Variations in OpenGraph Description   Relevancy-0.164249 %79 %
71Percentage of DoFollow Links   Authority-0.16988280 %88 %
72Leading Variations in Title Tag   Relevancy-0.161130 %81 %
73Variations in Main Tags   Relevancy-0.164845836 %86 %
74Variations in Absolute URLs   Relevancy-0.163105059 %88 %
75Number of CSS Includes   Technology-0.16261073 %78 %
76Number of Forms   Technology-0.1619254 %82 %
77Number of Facebook Pages   Authority-0.1616259 %80 %
78LSI Words in Title Tag   Relevancy-0.1616666 %94 %
79Variations in Search Result URL   Relevancy-0.164254 %77 %
80Number of H1 Tags   Size-0.1611270 %87 %
81Variations in OpenGraph Title   Relevancy-0.163153 %79 %
82Exact Matches in the HTML Tag   Relevancy-0.168261227 %83 %
83Percentage of DoFollow Internal Links   Authority-0.16907279 %86 %
84Number of External Links   Authority-0.16671577 %85 %
85Number of DoFollow External Links   Authority-0.15641376 %84 %
86Number of Images without ALT Text   Size-0.15601158 %86 %
87LSI Words in H1 Tags   Relevancy-0.1517456 %93 %
88Number of HTML Comments   Size-0.157075772 %84 %
89Has Entities in H2 Tags   Relevancy-0.151154 %85 %
90Has Form   Technology-0.151153 %78 %
91Variations in Script Tags   Relevancy-0.158536861 %83 %
92Number of H2 Tags   Size-0.1521768 %86 %
93Average Words Per Sentence   Size-0.152293278 %81 %
94Has JSON-LD Schema Markup   Relevancy-0.151154 %78 %
95Leading Variations in H1 Tags   Relevancy-0.151126 %81 %
96Number of Sentences   Size-0.1569713182 %83 %
97Has Meta Charset   Technology-0.151174 %83 %
98Number of JavaScript Includes   Technology-0.15441881 %81 %
99Flesch Kincaid Reading Grade Level   Other-0.156295 %86 %
100Variations in Nav Tags   Relevancy-0.152372346 %84 %
101Number of H3 Tags   Size-0.1533961 %84 %
102LSI Words in H2 Tags   Relevancy-0.14872054 %92 %
103Search Result Domain Length   Size-0.14251783 %79 %
104LSI Words in Meta Description Tag   Relevancy-0.14361054 %92 %
105Search Result Host Length   Size-0.14251783 %79 %
106Variations in H3 Tags   Relevancy-0.1416335 %83 %
107Entities in H4 Tags-0.1419222 %89 %
108Exact Matches in H1-H6 Tags   Relevancy-0.1411117 %83 %
109Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
110Variations in Section Tags   Relevancy-0.14911736 %84 %
111Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %78 %
112Inline CSS Kilobytes   Size-0.141916164 %82 %
113Variations in Footer Tags   Relevancy-0.1463635 %83 %
114Number of Questions In Headings   Size-0.148237 %82 %
115Has Meta Viewport   Technology-0.141181 %82 %
116Number Of JSON-LD Types   Relevancy-0.141181457 %82 %
117Has Canonical URL   Authority-0.141171 %79 %
118Search Result Uses HTTPS   Other-0.141183 %84 %
119Number of Absolute URLs   Authority-0.1499029082 %80 %
120Has Entities in H3 Tags   Relevancy-0.141146 %84 %
121Number of Questions   Size-0.14811167 %77 %
122Leading Variations in H2 Tags   Relevancy-0.146121 %82 %
123Page Size Kilobytes   Size-0.14110532083 %77 %
124Percentage of DoFollow External Links   Authority-0.14301074 %80 %
125Number of Prices   Size-0.1429627570 %80 %
126Number of Social Pages   Authority-0.1430465 %80 %
127Number of Instagram Pages   Authority-0.1412245 %78 %
128Number of Email Addresses   Trust-0.14280544 %80 %
129Word Count in Meta Description   Size-0.14381967 %78 %
130Meta Description Length   Size-0.1321711867 %78 %
131Has Email   Trust-0.131144 %71 %
132Number of LinkedIn Pages   Authority-0.137133 %76 %
133Has FavIcon   Technology-0.131175 %77 %
134Has Privacy Policy   Trust-0.131159 %74 %
135LSI Words in H3 Tags   Relevancy-0.131272248 %90 %
136Search Result URL Length   Size-0.13936298 %62 %
137Is Store Page   Other-0.131146 %68 %
138Has Meta Description   Relevancy-0.131166 %73 %
139Uses JSON-LD name   Other-0.131153 %77 %
140Meta Description Tag Has Entities   Relevancy-0.131158 %82 %
141Variations in Meta Twitter Description   Relevancy-0.134123 %73 %
142Variations Making Whole LI Tags   Relevancy-0.135124 %78 %
143Headings Has Question   Other-0.131137 %76 %
144Has OpenGraph Type   Relevancy-0.131161 %71 %
145Variations in Meta Twitter Content   Relevancy-0.132125 %70 %
146Variations in the last 100 words   Relevancy-0.1315345 %81 %
147Number of Nofollow Links   Authority-0.1344525 %76 %
148Is Home Page   Other-0.131120 %44 %
149Number of Facebook Accounts   Authority-0.133129 %78 %
150Number of US Phone Numbers   Trust-0.136671241 %81 %
151Variations making whole A Tags   Relevancy-0.138129 %77 %
152Has Meta Twitter Card   Authority-0.131152 %66 %
153Title Length   Size-0.131225081 %77 %
154Variations in I Tags   Relevancy-0.1317323 %80 %
155Number of H4 Tags   Size-0.1320437 %81 %
156Has OpenGraph Image   Relevancy-0.131154 %68 %
157Is Purchase Page   Other-0.131147 %66 %
158Has Contact Page   Trust-0.131163 %71 %
159Number of Social Accounts   Authority-0.1310243 %78 %
160Title Word Count   Size-0.1318881 %76 %
161Inline JavaScript Kilobytes   Size-0.1360911780 %72 %
162Exact Matches in Top 30KB   Relevancy-0.1324216 %78 %
163Number of Questions In H3 Tags   Size-0.135117 %76 %
164Has Terms of Service   Trust-0.131141 %68 %
165Variations in Strong Tags   Relevancy-0.1315225 %80 %
166Has Schema Markup   Relevancy-0.131164 %75 %
167Has US Phone Number   Trust-0.131141 %72 %
168Uses JSON-LD CollectionPage   Other-0.12115 %33 %
169Uses Schema name   Other-0.121160 %71 %
170Exact Matches in Sentences   Relevancy-0.1242218 %84 %
171Variations making whole H1 Tags   Relevancy-0.12118 %78 %
172Uses JSON-LD url   Other-0.121147 %76 %
173Variations Making Whole Span Tags   Relevancy-0.127119 %81 %
174Uses Schema collectionpage   Other-0.12115 %33 %
175Variations in TITLE Attributes   Relevancy-0.1287535 %80 %
176Variations in H4-H6 Tags   Relevancy-0.1216118 %80 %
177Is Pagination Page   Other-0.121119 %65 %
178Has Meta Twitter Description   Authority-0.121130 %59 %
179Uses Schema url   Other-0.121155 %68 %
180Number of Questions In H2 Tags   Size-0.124123 %74 %
181Variations in Button Tags   Relevancy-0.12125210 %80 %
182Has Google Verify   Technology-0.121123 %65 %
183Exact Matches in Title Tag   Relevancy-0.122115 %80 %
184Percentage of NoFollow Links   Authority-0.1215222 %74 %
185Variations in ID Attributes   Relevancy-0.1210212 %81 %
186Number of Twitter Accounts   Authority-0.122125 %70 %
187Uses JSON-LD ListItem   Other-0.121134 %71 %
188Has Entities in H4 Tags   Relevancy-0.121123 %78 %
189Uses JSON-LD ItemList   Other-0.12114 %44 %
190Has Meta Twitter Title   Authority-0.121132 %59 %
191Leading Variations in H3 Tags   Relevancy-0.125116 %77 %
192Uses Schema itemlist   Other-0.12114 %45 %
193Number of NoFollow External Links   Authority-0.1221317 %75 %
194Is Article Page   Other-0.121142 %67 %
195Uses Schema organization   Other-0.121135 %67 %
196Has Apple Touch Icon   Technology-0.121152 %73 %
197Is Category Page   Other-0.121115 %66 %
198Is OpenGraph Type Article   Technology-0.121132 %59 %
199Uses Schema sku   Other-0.12115 %27 %
200Variations in H4 Tags   Relevancy-0.125114 %78 %