Measures 151155 SEO Factors

149433 Built-In SEO Factors

140218 On-page SEO Factors

9215 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 2026-06     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-0.2486224582 %76 %
2Load Time Milliseconds   Performance-0.2215487157484 %89 %
3Number of Referring Domains   Authority-0.224855020540 %88 %
4Number of Backlinks   Authority-0.21227556944858641 %87 %
5Number of Top 200 Shared Factors Used   Diversity-0.21523795 %91 %
6Number of Top 50 Shared Factors Used   Diversity-0.21161294 %88 %
7Number of Top 100 Shared Factors Used   Diversity-0.21382895 %91 %
8Number of Do Follow Backlinks   Authority-0.21225040954161737 %87 %
9Search Result Domain is .com, .net, or .org   Other-0.2116 %75 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.2192759 %81 %
11Number of Unique Variations Used   Diversity-0.2521179 %79 %
12Variations in H1-H6 Tags   Relevancy-0.2231959 %82 %
13Variations in H1 and H2 Tags   Relevancy-0.2113557 %82 %
14Number of No Follow Backlinks   Authority-0.194373255859727 %84 %
15Search Result Domain is .com   Other-0.19116 %78 %
16Clean Text Kilobytes   Size-0.19981270 %88 %
17Variations in P Tags   Relevancy-0.1945534961 %85 %
18Unabridged Word Count   Size-0.1916706173884 %85 %
19Word Count   Size-0.193779132484 %85 %
20Number of P Tags   Size-0.191033569 %84 %
21Variations in Search Result Document File Name   Relevancy-0.1910144 %83 %
22Number of Heading Tags   Size-0.191171971 %82 %
23Number of Includes   Technology-0.18522578 %78 %
24Number of H2 Tags   Size-0.1821765 %83 %
25Variations in Div Tags   Relevancy-0.182826023670 %85 %
26Entities in H2 Tags-0.1850648 %88 %
27Number of Distinct Entities Used   Diversity-0.18642773 %90 %
28Number of Factors Used   Diversity-0.1851918895 %86 %
29Number of Images   Size-0.181362470 %85 %
30Number of H1 Tags   Size-0.183166 %86 %
31Variations in LI Tags   Relevancy-0.1842033259 %81 %
32Entities in Sentences   Relevancy-0.1847712363 %90 %
33Has Meta Charset   Technology-0.181171 %81 %
34Number of Images with ALT Text   Size-0.181221765 %90 %
35Variations in H2 Tags   Relevancy-0.1898444 %81 %
36Number of DoFollow External Links   Authority-0.18561273 %87 %
37Entities in the HTML Tag   Relevancy-0.1848212568 %90 %
38Number of Facebook Pages   Authority-0.177253 %86 %
39LSI Words in Sentences   Relevancy-0.17251460262 %90 %
40Number of HTML Tags   Size-0.17307395184 %84 %
41Number of External Links   Authority-0.17601373 %89 %
42Variations in H1 Tags   Relevancy-0.1715151 %83 %
43Leading Variations in H1-H6 Tags   Relevancy-0.1712243 %80 %
44Variations in A Tags   Relevancy-0.1745524059 %81 %
45Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %80 %
46Variations in Body Tags   Relevancy-0.179473168276 %82 %
47Number of DoFollow Links   Authority-0.1757812978 %90 %
48Number of Links   Authority-0.1758513179 %86 %
49Number of HTTPS Links   Authority-0.1758513078 %90 %
50Variations in Search Result URL Path   Relevancy-0.1713147 %82 %
51Variations in HTML Tags   Relevancy-0.179473166975 %83 %
52Has JSON-LD Schema Markup   Relevancy-0.171150 %80 %
53Variation Count in Top 30KB   Relevancy-0.1652445565 %86 %
54Variations in A Tag HREF Attributes   Relevancy-0.1617404854 %83 %
55Variations in Distinct A Tag HREF Attributes   Relevancy-0.1612223055 %83 %
56Entities in H3 Tags-0.1653638 %88 %
57Number of Internal Links   Authority-0.1657311977 %89 %
58Entities in Title Tag   Relevancy-0.166363 %88 %
59Average Words Per Sentence   Size-0.161682875 %87 %
60Has Entities in H2 Tags   Relevancy-0.161149 %84 %
61Term Frequency   Relevancy-0.166375 %81 %
62Variations in Search Result Link Text   Relevancy-0.168279 %77 %
63LSI Words in H2 Tags   Relevancy-0.161041751 %89 %
64Entities in H1 Tags-0.1613249 %88 %
65Number of CSS Includes   Technology-0.1624970 %78 %
66Variations in Search Result Display URL   Relevancy-0.168279 %81 %
67Number of H3 Tags   Size-0.1638854 %81 %
68Variations in Span Tags   Relevancy-0.167991245 %84 %
69Variations in Sentences   Relevancy-0.1624415469 %84 %
70Number of Instagram Pages   Authority-0.1615241 %83 %
71Number of HTML Comments   Size-0.167325168 %83 %
72Flesch Kincaid Reading Grade Level   Other-0.166290 %89 %
73Number of Images without ALT Text   Size-0.1646851 %84 %
74Variations in Main Tags   Relevancy-0.16139239936 %81 %
75Variations in Absolute URLs   Relevancy-0.1571339059 %87 %
76Has Entities in H1 Tags   Relevancy-0.151151 %86 %
77Variations in ALT Attributes   Relevancy-0.15158739 %80 %
78Number of LinkedIn Pages   Authority-0.157128 %86 %
79Number of Forms   Technology-0.1518246 %76 %
80Variations in Search Result URL   Relevancy-0.1522255 %78 %
81Variations in First 100 Words   Relevancy-0.15184865 %84 %
82Variations in the Canonical URL   Relevancy-0.1562249 %82 %
83Variations in the Title Tag   Relevancy-0.1515264 %79 %
84Variations in Nav Tags   Relevancy-0.1572385043 %80 %
85Variations in OpenGraph Title   Relevancy-0.1513255 %73 %
86Search Result Number of Dirs in Path   Other-0.153275 %80 %
87Number of Sentences   Size-0.1562113682 %77 %
88Number of Facebook Accounts   Authority-0.152125 %83 %
89Has Form   Technology-0.151145 %74 %
90Variations in H3 Tags   Relevancy-0.1592332 %80 %
91Number of Questions In Headings   Size-0.158236 %85 %
92Number Of JSON-LD Types   Relevancy-0.14761354 %84 %
93Percentage of DoFollow External Links   Authority-0.14321272 %83 %
94Variations in Section Tags   Relevancy-0.1415222535 %84 %
95Number of Social Pages   Authority-0.1418560 %88 %
96LSI Words in H1 Tags   Relevancy-0.1429452 %90 %
97Number of Social Accounts   Authority-0.144238 %86 %
98Percentage of DoFollow Links   Authority-0.141008379 %84 %
99Leading Variations in H1 Tags   Relevancy-0.141127 %80 %
100Search Result Host Length   Size-0.14241784 %76 %
101TF/IDF   Relevancy-0.141156 %79 %
102Number of US Phone Numbers   Trust-0.1411541435 %81 %
103Clean Keyword Density in the HTML Tag   Relevancy-0.14194568 %71 %
104Headings Has Question   Other-0.141137 %81 %
105Number of Questions In H2 Tags   Size-0.143123 %80 %
106Search Result Domain Length   Size-0.14241784 %80 %
107Variation Density in Top 30KB   Relevancy-0.14320562 %77 %
108Variations in Meta Description   Relevancy-0.1445253 %80 %
109Search Result Uses HTTPS   Other-0.141183 %78 %
110Has Meta Viewport   Technology-0.141181 %73 %
111Number of JavaScript Includes   Technology-0.14421779 %79 %
112Exact Matches in the HTML Tag   Relevancy-0.142641528 %82 %
113LSI Words in H3 Tags   Relevancy-0.14951642 %86 %
114Has Entities in H3 Tags   Relevancy-0.141139 %83 %
115Search Result Summary Length   Size-0.1316015195 %77 %
116Number of Twitter Accounts   Authority-0.131118 %78 %
117Has US Phone Number   Trust-0.131135 %76 %
118Uses JSON-LD name   Other-0.131151 %77 %
119Is Home Page   Other-0.131116 %54 %
120Variations in Footer Tags   Relevancy-0.1351282735 %82 %
121Has Meta Robots   Other-0.131124 %74 %
122Leading Variations in Title Tag   Relevancy-0.131132 %76 %
123Variations making whole H1-H6 Tags   Relevancy-0.132116 %73 %
124Entities in Meta Description Tag   Relevancy-0.137352 %83 %
125Inline CSS Kilobytes   Size-0.132246065 %81 %
126Number of H4 Tags   Size-0.1346332 %76 %
127Number of Absolute URLs   Authority-0.13152425783 %69 %
128Variations in OpenGraph Description   Relevancy-0.1342249 %79 %
129Leading Variations in H2 Tags   Relevancy-0.1310122 %85 %
130Variations in Script Tags   Relevancy-0.133373318363 %76 %
131Has Apple Touch Icon   Technology-0.131148 %77 %
132Is Article Page   Other-0.131142 %76 %
133Number of Questions   Size-0.13821567 %69 %
134Variations Making Whole LI Tags   Relevancy-0.136122 %76 %
135Percentage of DoFollow Internal Links   Authority-0.13917277 %78 %
136Exact Matches in Top 30KB   Relevancy-0.1314218 %81 %
137Variations making whole A Tags   Relevancy-0.135127 %74 %
138Exact Matches in H1-H6 Tags   Relevancy-0.129119 %81 %
139Number of Email Addresses   Trust-0.1230442 %80 %
140Variations making whole H1, H2, and H3 Tags   Relevancy-0.121114 %74 %
141Title Tag Has Entities   Relevancy-0.121163 %79 %
142Number Of Claimed Brands   Other-0.1214223 %80 %
143Variations Making Whole Span Tags   Relevancy-0.129119 %80 %
144Uses JSON-LD url   Other-0.121145 %76 %
145Variations in Strong Tags   Relevancy-0.12233324 %80 %
146Uses Schema datemodified   Other-0.121131 %64 %
147Has FavIcon   Technology-0.121175 %71 %
148Uses JSON-LD description   Other-0.121141 %75 %
149Uses JSON-LD dateModified   Other-0.121130 %71 %
150Has Contact Page   Trust-0.121160 %68 %
151Number of HREF Lang Tags   Size-0.1224211 %79 %
152Page Size Kilobytes   Size-0.1287232083 %64 %
153Entities in H4 Tags-0.1210217 %84 %
154Variations in I Tags   Relevancy-0.12215419 %80 %
155Uses JSON-LD datePublished   Other-0.121132 %72 %
156Uses JSON-LD representativeOfPage   Other-0.12111 %13 %
157Variations in the last 100 words   Relevancy-0.12187549 %76 %
158Number of Prices   Size-0.125699267 %79 %
159Variations in Article Tags   Relevancy-0.1217601824 %78 %
160Uses Schema representativeofpage   Other-0.12111 %13 %
161Has HREF Lang   Technology-0.121112 %74 %
162Has Canonical URL   Authority-0.121171 %72 %
163Uses Schema webpage   Other-0.121132 %65 %
164Variations in ID Attributes   Relevancy-0.12688414 %79 %
165Variations in Button Tags   Relevancy-0.121065611 %77 %
166Uses Schema website   Other-0.121133 %64 %
167LSI Words in Title Tag   Relevancy-0.1214565 %85 %
168Word Count in Meta Description   Size-0.12532066 %69 %
169Leading Variations in H3 Tags   Relevancy-0.128116 %79 %
170Uses JSON-LD Organization   Other-0.121130 %76 %
171Variations in H4-H6 Tags   Relevancy-0.1256216 %78 %
172Uses JSON-LD ListItem   Other-0.121133 %71 %
173Has Privacy Policy   Trust-0.121154 %68 %
174Uses Schema organization   Other-0.121133 %69 %
175Uses JSON-LD WebPage   Other-0.121129 %71 %
176LSI Words in Meta Description Tag   Relevancy-0.1128953 %86 %
177Uses JSON-LD BreadcrumbList   Other-0.111133 %71 %
178Has Meta Description   Relevancy-0.111166 %65 %
179Has Email   Trust-0.111142 %76 %
180Uses Schema inlanguage   Other-0.111129 %62 %
181Number of Nofollow Links   Authority-0.1120321 %81 %
182Uses JSON-LD ImageObject   Other-0.111130 %72 %
183Uses JSON-LD mainEntity   Other-0.11111 %17 %
184Variations in Class Attributes   Relevancy-0.1196874319 %79 %
185Has OpenGraph Type   Relevancy-0.111162 %68 %
186Uses Schema faqpage   Other-0.11119 %63 %
187Number of H5 Tags   Size-0.1137214 %74 %
188Meta Description Length   Size-0.1129112366 %74 %
189Number of Meta Generator Tags   Technology-0.112132 %73 %
190Uses JSON-LD WebSite   Other-0.111131 %72 %
191Has Google Verify   Technology-0.111118 %67 %
192Number of YouTube Accounts   Technology-0.11217 %77 %
193Title Word Count   Size-0.1123882 %69 %
194Number of Questions In H3 Tags   Size-0.115117 %80 %
195Uses Schema answer   Other-0.11119 %62 %
196Uses JSON-LD inLanguage   Other-0.111128 %69 %
197Number of NoFollow External Links   Authority-0.1119214 %81 %
198Uses JSON-LD postalCode   Other-0.111114 %67 %
199Uses Schema postalcode   Other-0.111115 %61 %
200Title Length   Size-0.111595382 %71 %