Measures 151233 SEO Factors

149511 Built-In SEO Factors

140296 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-0.2486225882 %79 %
2Number of Referring Domains   Authority-0.214855017340 %87 %
3Load Time Milliseconds   Performance-0.2115487158384 %88 %
4Number of Backlinks   Authority-0.21227556943693240 %87 %
5Number of Top 50 Shared Factors Used   Diversity-0.21161294 %87 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523795 %90 %
7Number of Do Follow Backlinks   Authority-0.2225040953174837 %86 %
8Number of Top 100 Shared Factors Used   Diversity-0.2382895 %90 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2192759 %81 %
10Variations in H1-H6 Tags   Relevancy-0.2231959 %82 %
11Search Result Domain is .com, .net, or .org   Other-0.19116 %76 %
12Variations in H1 and H2 Tags   Relevancy-0.19113557 %82 %
13Number of Unique Variations Used   Diversity-0.19521178 %78 %
14Number of No Follow Backlinks   Authority-0.194373255657727 %83 %
15Variations in P Tags   Relevancy-0.1985175760 %85 %
16Search Result Domain is .com   Other-0.19116 %78 %
17Clean Text Kilobytes   Size-0.192421270 %89 %
18Variations in Search Result Document File Name   Relevancy-0.1810145 %82 %
19Unabridged Word Count   Size-0.1826444179084 %87 %
20Entities in H2 Tags-0.1850648 %89 %
21Number of P Tags   Size-0.181033569 %84 %
22Word Count   Size-0.1819186136484 %86 %
23Entities in Sentences   Relevancy-0.1847712765 %90 %
24Number of Distinct Entities Used   Diversity-0.18802875 %90 %
25Number of Images   Size-0.181362470 %85 %
26Number of H2 Tags   Size-0.1821764 %83 %
27Number of Heading Tags   Size-0.181171971 %83 %
28Number of Includes   Technology-0.18522578 %76 %
29Entities in the HTML Tag   Relevancy-0.1848213170 %90 %
30Variations in Div Tags   Relevancy-0.182826023370 %86 %
31LSI Words in Sentences   Relevancy-0.18251464564 %91 %
32Number of Factors Used   Diversity-0.1851918795 %84 %
33Number of H1 Tags   Size-0.184166 %86 %
34Variations in LI Tags   Relevancy-0.1842033058 %81 %
35Variations in H2 Tags   Relevancy-0.1898444 %81 %
36Number of Images with ALT Text   Size-0.181221765 %89 %
37Has Meta Charset   Technology-0.171171 %80 %
38Variations in H1 Tags   Relevancy-0.1715151 %81 %
39Number of Facebook Pages   Authority-0.1714252 %85 %
40Number of DoFollow External Links   Authority-0.17561272 %86 %
41Variations in Search Result URL Path   Relevancy-0.1713147 %81 %
42Number of HTML Tags   Size-0.172214896384 %85 %
43Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %79 %
44Number of External Links   Authority-0.17601373 %88 %
45Variations in Body Tags   Relevancy-0.179473180276 %81 %
46Entities in H1 Tags-0.1713249 %88 %
47Leading Variations in H1-H6 Tags   Relevancy-0.1712243 %80 %
48Entities in H3 Tags-0.1753639 %89 %
49Variation Count in Top 30KB   Relevancy-0.1752445565 %83 %
50Number of DoFollow Links   Authority-0.1757812678 %89 %
51Variations in A Tags   Relevancy-0.1745523859 %82 %
52Has JSON-LD Schema Markup   Relevancy-0.171151 %79 %
53Number of Links   Authority-0.1658512879 %87 %
54Number of HTTPS Links   Authority-0.1658512778 %89 %
55Variations in HTML Tags   Relevancy-0.169473178575 %83 %
56LSI Words in H2 Tags   Relevancy-0.161041853 %89 %
57Entities in Title Tag   Relevancy-0.167364 %89 %
58Has Entities in H2 Tags   Relevancy-0.161149 %84 %
59Number of Internal Links   Authority-0.1657311677 %88 %
60Variations in A Tag HREF Attributes   Relevancy-0.1617404954 %84 %
61Average Words Per Sentence   Size-0.161682875 %85 %
62Variations in Distinct A Tag HREF Attributes   Relevancy-0.1612223155 %84 %
63Variations in Search Result URL   Relevancy-0.1622255 %77 %
64Term Frequency   Relevancy-0.166375 %80 %
65Number of LinkedIn Pages   Authority-0.167128 %85 %
66Has Entities in H1 Tags   Relevancy-0.161151 %86 %
67Number of H3 Tags   Size-0.1638854 %82 %
68Variations in Search Result Link Text   Relevancy-0.1611279 %75 %
69Variations in Sentences   Relevancy-0.1642296068 %84 %
70Variations in Search Result Display URL   Relevancy-0.1511279 %78 %
71Number of HTML Comments   Size-0.157324968 %83 %
72Number of Images without ALT Text   Size-0.1546850 %84 %
73Number of CSS Includes   Technology-0.1524970 %76 %
74Variations in Absolute URLs   Relevancy-0.1571338959 %86 %
75Flesch Kincaid Reading Grade Level   Other-0.156290 %86 %
76Variations in Main Tags   Relevancy-0.151392310135 %82 %
77Variations in Span Tags   Relevancy-0.157991245 %85 %
78Search Result Number of Dirs in Path   Other-0.153276 %79 %
79Number of Instagram Pages   Authority-0.1519240 %84 %
80Variations in Nav Tags   Relevancy-0.1572385543 %79 %
81Variations in ALT Attributes   Relevancy-0.15158740 %80 %
82LSI Words in H1 Tags   Relevancy-0.1529454 %88 %
83Number of Forms   Technology-0.1518245 %76 %
84Variations in the Canonical URL   Relevancy-0.1562249 %81 %
85Variations in H3 Tags   Relevancy-0.1592332 %79 %
86Variations in the Title Tag   Relevancy-0.1518264 %77 %
87Number of Sentences   Size-0.1586514382 %77 %
88Number of Questions In Headings   Size-0.158236 %84 %
89Variations in First 100 Words   Relevancy-0.15184864 %83 %
90Number Of JSON-LD Types   Relevancy-0.14761354 %83 %
91Leading Variations in H1 Tags   Relevancy-0.141127 %78 %
92Variations in OpenGraph Title   Relevancy-0.1416255 %72 %
93Number of Social Pages   Authority-0.1433459 %88 %
94Has Form   Technology-0.141145 %73 %
95Percentage of DoFollow External Links   Authority-0.14321271 %81 %
96Number of Facebook Accounts   Authority-0.142124 %82 %
97LSI Words in H3 Tags   Relevancy-0.14951844 %86 %
98Variations in Section Tags   Relevancy-0.1415222435 %85 %
99Headings Has Question   Other-0.141137 %79 %
100Number of Social Accounts   Authority-0.145237 %84 %
101Clean Keyword Density in the HTML Tag   Relevancy-0.14194668 %69 %
102Search Result Host Length   Size-0.14251784 %72 %
103Percentage of DoFollow Links   Authority-0.141008379 %80 %
104Number of US Phone Numbers   Trust-0.1411541434 %79 %
105Number of Questions In H2 Tags   Size-0.143124 %78 %
106TF/IDF   Relevancy-0.142157 %77 %
107Has Entities in H3 Tags   Relevancy-0.141140 %83 %
108Search Result Domain Length   Size-0.14251784 %75 %
109Exact Matches in the HTML Tag   Relevancy-0.142641327 %82 %
110Variations in Meta Description   Relevancy-0.1445253 %78 %
111Variation Density in Top 30KB   Relevancy-0.13320562 %75 %
112Uses JSON-LD name   Other-0.131151 %76 %
113Number of JavaScript Includes   Technology-0.13471779 %77 %
114Search Result Uses HTTPS   Other-0.131183 %75 %
115Search Result Summary Length   Size-0.1316015194 %73 %
116Entities in Meta Description Tag   Relevancy-0.138353 %84 %
117Leading Variations in Title Tag   Relevancy-0.131132 %75 %
118Has Meta Viewport   Technology-0.131181 %71 %
119Has Apple Touch Icon   Technology-0.131147 %75 %
120Variations in Footer Tags   Relevancy-0.1351282735 %81 %
121Is Article Page   Other-0.131142 %74 %
122Inline CSS Kilobytes   Size-0.132246165 %81 %
123Has US Phone Number   Trust-0.131135 %75 %
124Is Home Page   Other-0.131115 %52 %
125Has Meta Robots   Other-0.131124 %73 %
126Number of Absolute URLs   Authority-0.13228226083 %69 %
127Variations making whole H1-H6 Tags   Relevancy-0.132116 %74 %
128Leading Variations in H2 Tags   Relevancy-0.1310122 %82 %
129Number of Twitter Accounts   Authority-0.131118 %77 %
130Variations in Script Tags   Relevancy-0.133417721463 %75 %
131Variations in OpenGraph Description   Relevancy-0.1342250 %77 %
132Number of Questions   Size-0.131011567 %69 %
133Exact Matches in H1-H6 Tags   Relevancy-0.139118 %81 %
134Number of H4 Tags   Size-0.1346332 %76 %
135Percentage of DoFollow Internal Links   Authority-0.13917377 %75 %
136Variations Making Whole LI Tags   Relevancy-0.136123 %74 %
137Exact Matches in Top 30KB   Relevancy-0.1318218 %80 %
138Uses JSON-LD url   Other-0.131146 %74 %
139Variations making whole A Tags   Relevancy-0.126127 %74 %
140Uses Schema datemodified   Other-0.121131 %63 %
141Variations in Strong Tags   Relevancy-0.12233324 %79 %
142Uses JSON-LD description   Other-0.121141 %73 %
143Number of Email Addresses   Trust-0.1241442 %80 %
144Uses JSON-LD dateModified   Other-0.121130 %69 %
145Variations making whole H1, H2, and H3 Tags   Relevancy-0.122114 %74 %
146Uses JSON-LD datePublished   Other-0.121132 %69 %
147Number Of Claimed Brands   Other-0.1235223 %78 %
148Variations in Article Tags   Relevancy-0.1217601824 %76 %
149Entities in H4 Tags-0.1210217 %85 %
150Has Contact Page   Trust-0.121160 %64 %
151Title Tag Has Entities   Relevancy-0.121164 %77 %
152Number of HREF Lang Tags   Size-0.1224211 %79 %
153Variations Making Whole Span Tags   Relevancy-0.129119 %81 %
154LSI Words in Meta Description Tag   Relevancy-0.12281055 %84 %
155Has FavIcon   Technology-0.121174 %69 %
156Page Size Kilobytes   Size-0.12109631983 %64 %
157LSI Words in Title Tag   Relevancy-0.1215567 %84 %
158Uses Schema webpage   Other-0.121132 %65 %
159Uses Schema organization   Other-0.121133 %67 %
160Uses JSON-LD representativeOfPage   Other-0.12111 %11 %
161Uses JSON-LD ListItem   Other-0.121133 %72 %
162Has HREF Lang   Technology-0.121113 %74 %
163Uses Schema website   Other-0.121133 %63 %
164Uses JSON-LD WebPage   Other-0.121129 %69 %
165Has Privacy Policy   Trust-0.121156 %67 %
166Number of Prices   Size-0.125699567 %78 %
167Uses JSON-LD BreadcrumbList   Other-0.121133 %72 %
168Uses JSON-LD Organization   Other-0.121130 %73 %
169Word Count in Meta Description   Size-0.12792066 %67 %
170Variations in the last 100 words   Relevancy-0.12187548 %74 %
171Leading Variations in H3 Tags   Relevancy-0.128116 %77 %
172Uses Schema inlanguage   Other-0.121128 %63 %
173Variations in I Tags   Relevancy-0.12215419 %78 %
174Uses Schema representativeofpage   Other-0.12111 %12 %
175Has Canonical URL   Authority-0.121171 %69 %
176Uses JSON-LD ImageObject   Other-0.111130 %71 %
177Has Email   Trust-0.111142 %74 %
178Number of Nofollow Links   Authority-0.1120321 %78 %
179Uses JSON-LD mainEntity   Other-0.11111 %16 %
180Variations in ID Attributes   Relevancy-0.11688415 %80 %
181Number of Questions In H3 Tags   Size-0.115117 %79 %
182Variations in Button Tags   Relevancy-0.111065611 %78 %
183Has Meta Description   Relevancy-0.111165 %63 %
184Number of Meta Generator Tags   Technology-0.112132 %72 %
185Uses JSON-LD inLanguage   Other-0.111128 %68 %
186Uses JSON-LD WebSite   Other-0.111130 %71 %
187Variations in H4-H6 Tags   Relevancy-0.1156216 %76 %
188Is OpenGraph Type Article   Technology-0.111131 %66 %
189Meta Description Length   Size-0.1147012366 %71 %
190Has Google Verify   Technology-0.111118 %67 %
191Has OpenGraph Type   Relevancy-0.111162 %66 %
192Number of YouTube Accounts   Technology-0.11217 %76 %
193Uses Schema name   Other-0.111160 %59 %
194Variations in Class Attributes   Relevancy-0.1196873520 %78 %
195Number of NoFollow External Links   Authority-0.1119214 %80 %
196LSI Words in H4 Tags   Relevancy-0.1149624 %80 %
197Exact Matches in Title Tag   Relevancy-0.112117 %79 %
198Has Schema Markup   Relevancy-0.111163 %61 %
199Meta Description Tag Has Entities   Relevancy-0.111153 %71 %
200Uses Schema searchaction   Other-0.111123 %64 %