Measures 150412 SEO Factors

148690 Built-In SEO Factors

139488 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.

[ 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 2026-04     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique Variations Used   Diversity-0.2332674 %92 %
2Number of Unique LSI Words Used   Diversity-0.2389730779 %84 %
3Load Time Milliseconds   Performance-0.2214022143281 %92 %
4Number of Top 50 Shared Factors Used   Diversity-0.22161193 %94 %
5Number of Top 200 Shared Factors Used   Diversity-0.22503696 %95 %
6Number of Top 100 Shared Factors Used   Diversity-0.22382896 %95 %
7Search Result Domain is .com, .net, or .org   Other-0.21116 %78 %
8Number of Distinct Entities Used   Diversity-0.21602773 %95 %
9Search Result Domain is .com   Other-0.21116 %77 %
10Entities in Title Tag   Relevancy-0.27361 %93 %
11Variations in H1 and H2 Tags   Relevancy-0.2103452 %92 %
12Variations in Body Tags   Relevancy-0.2123426107771 %92 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.2192755 %91 %
14Variations in HTML Tags   Relevancy-0.2123426107371 %92 %
15Variations in H1-H6 Tags   Relevancy-0.2212855 %91 %
16Number of Factors Used   Diversity-0.227116896 %94 %
17Term Frequency   Relevancy-0.195372 %90 %
18Variations in P Tags   Relevancy-0.1926134057 %93 %
19Variations in Div Tags   Relevancy-0.195727439567 %92 %
20LSI Words in Title Tag   Relevancy-0.1927668 %92 %
21Entities in Sentences   Relevancy-0.1944913661 %96 %
22Entities in the HTML Tag   Relevancy-0.1945114066 %96 %
23Variations in Sentences   Relevancy-0.1952136964 %91 %
24Entities in H2 Tags-0.1927747 %93 %
25Variations in Search Result Display URL   Relevancy-0.1916274 %84 %
26Variations in Search Result Link Text   Relevancy-0.1916274 %84 %
27Variations in the Title Tag   Relevancy-0.1914259 %88 %
28LSI Words in Sentences   Relevancy-0.19303378063 %94 %
29Entities in H1 Tags-0.195249 %92 %
30Variations in H1 Tags   Relevancy-0.1813146 %88 %
31Leading Variations in H1-H6 Tags   Relevancy-0.1820237 %89 %
32Variations in Search Result Document File Name   Relevancy-0.185139 %89 %
33Variation Count in Top 30KB   Relevancy-0.1843755758 %90 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817235 %91 %
35Word Count   Size-0.184223140381 %89 %
36LSI Words in H1 Tags   Relevancy-0.1814554 %93 %
37Unabridged Word Count   Size-0.188545194881 %89 %
38Number of HTML Tags   Size-0.18271397781 %85 %
39Variations in LI Tags   Relevancy-0.1831943456 %92 %
40Variations in A Tags   Relevancy-0.1859705155 %91 %
41Variations in H2 Tags   Relevancy-0.1899339 %91 %
42Variations in Meta Description   Relevancy-0.1733248 %86 %
43Number of Includes   Technology-0.17492576 %81 %
44Variations in Search Result URL Path   Relevancy-0.177141 %88 %
45Clean Text Kilobytes   Size-0.17491366 %87 %
46Variations in OpenGraph Title   Relevancy-0.1712149 %83 %
47TF/IDF   Relevancy-0.171150 %88 %
48Entities in H3 Tags-0.1728738 %94 %
49Number of Images with ALT Text   Size-0.171202163 %86 %
50Clean Keyword Density in the HTML Tag   Relevancy-0.17172563 %86 %
51Number of P Tags   Size-0.17993666 %88 %
52Entities in Meta Description Tag   Relevancy-0.178353 %89 %
53Variations in the Canonical URL   Relevancy-0.1734242 %89 %
54Number of Facebook Pages   Authority-0.176251 %87 %
55Variations in Script Tags   Relevancy-0.175459644258 %87 %
56Leading Variations in Title Tag   Relevancy-0.171127 %82 %
57Number of Heading Tags   Size-0.17531967 %87 %
58Search Result Number of Dirs in Path   Other-0.173273 %79 %
59Variations in ALT Attributes   Relevancy-0.1712941540 %84 %
60Number of Images   Size-0.171252868 %87 %
61Variations in OpenGraph Description   Relevancy-0.1629243 %85 %
62Variations in Span Tags   Relevancy-0.1614821644 %90 %
63Variation Density in Top 30KB   Relevancy-0.16239454 %87 %
64Number of H2 Tags   Size-0.1616761 %89 %
65Has Entities in H1 Tags   Relevancy-0.161148 %88 %
66LSI Words in H2 Tags   Relevancy-0.16962252 %94 %
67Number of HTTPS Links   Authority-0.1660013273 %88 %
68Number of Links   Authority-0.1660113373 %88 %
69Number of Internal Links   Authority-0.1659512072 %87 %
70Number of DoFollow Links   Authority-0.1659213073 %88 %
71Number of H1 Tags   Size-0.163162 %91 %
72Variations in Search Result URL   Relevancy-0.1619249 %85 %
73Number of CSS Includes   Technology-0.1622968 %83 %
74Leading Variations in H1 Tags   Relevancy-0.162123 %87 %
75Variations in Main Tags   Relevancy-0.162745822433 %89 %
76Variations in Absolute URLs   Relevancy-0.16997411552 %94 %
77Has JSON-LD Schema Markup   Relevancy-0.161148 %85 %
78Percentage of DoFollow Internal Links   Authority-0.16946772 %87 %
79LSI Words in Meta Description Tag   Relevancy-0.16301156 %91 %
80Variations in A Tag HREF Attributes   Relevancy-0.1634884650 %92 %
81Variations in First 100 Words   Relevancy-0.16130658 %91 %
82Flesch Kincaid Reading Grade Level   Other-0.166193 %90 %
83Percentage of DoFollow Links   Authority-0.161007773 %90 %
84Has Entities in H2 Tags   Relevancy-0.161147 %90 %
85Average Words Per Sentence   Size-0.161493171 %86 %
86Variations in Distinct A Tag HREF Attributes   Relevancy-0.1621333150 %92 %
87Search Result Uses HTTPS   Other-0.161180 %83 %
88Search Result Domain Length   Size-0.15251681 %85 %
89Search Result Host Length   Size-0.15251681 %85 %
90Exact Matches in the HTML Tag   Relevancy-0.154321026 %87 %
91Number of Sentences   Size-0.1566013777 %84 %
92Has Meta Charset   Technology-0.151168 %81 %
93Variations in Nav Tags   Relevancy-0.15107565240 %87 %
94Number Of JSON-LD Types   Relevancy-0.152292051 %88 %
95Variations in Section Tags   Relevancy-0.1516112433 %87 %
96Number of Questions In Headings   Size-0.1510232 %84 %
97Has Canonical URL   Authority-0.151166 %81 %
98Number of H3 Tags   Size-0.1528853 %84 %
99Title Tag Has Entities   Relevancy-0.151161 %87 %
100Number of Absolute URLs   Authority-0.1592726479 %81 %
101Title Word Count   Size-0.1540879 %79 %
102Number of DoFollow External Links   Authority-0.15561268 %85 %
103Number of Referring Domains   Authority-0.15701911644 %76 %
104Number of HTML Comments   Size-0.154094563 %87 %
105Number of JavaScript Includes   Technology-0.15401776 %77 %
106Number of Backlinks   Authority-0.1519454221859044 %78 %
107Variations in H3 Tags   Relevancy-0.15110330 %88 %
108Title Length   Size-0.152365279 %79 %
109Number of Forms   Technology-0.159246 %79 %
110Number of External Links   Authority-0.15591369 %88 %
111Word Count in Meta Description   Size-0.15391963 %79 %
112Number of Images without ALT Text   Size-0.1471851 %87 %
113Has Meta Viewport   Technology-0.141177 %82 %
114Meta Description Length   Size-0.1420711663 %79 %
115Leading Variations in H2 Tags   Relevancy-0.147118 %88 %
116Number of Facebook Accounts   Authority-0.143125 %79 %
117Number of Do Follow Backlinks   Authority-0.1419453741217240 %76 %
118Has Meta Description   Relevancy-0.141162 %80 %
119LSI Words in H3 Tags   Relevancy-0.141062245 %90 %
120Uses JSON-LD name   Other-0.141148 %82 %
121Uses Schema name   Other-0.141157 %73 %
122Has Privacy Policy   Trust-0.141153 %82 %
123Has Schema Markup   Relevancy-0.141160 %78 %
124Headings Has Question   Other-0.141131 %82 %
125Number of Questions   Size-0.14651264 %79 %
126Page Size Kilobytes   Size-0.14103733879 %71 %
127Number of US Phone Numbers   Trust-0.141311138 %83 %
128Number of No Follow Backlinks   Authority-0.141851383757634 %69 %
129Meta Description Tag Has Entities   Relevancy-0.141153 %83 %
130Has Form   Technology-0.141146 %79 %
131Variations making whole H1-H6 Tags   Relevancy-0.142112 %81 %
132Has Entities in H3 Tags   Relevancy-0.141139 %86 %
133Variations in Footer Tags   Relevancy-0.1438282631 %87 %
134Inline CSS Kilobytes   Size-0.142075563 %85 %
135Variations in Strong Tags   Relevancy-0.1472223 %84 %
136Has OpenGraph Type   Relevancy-0.141158 %73 %
137Has Meta Twitter Card   Authority-0.141150 %65 %
138Has US Phone Number   Trust-0.141139 %75 %
139Has Contact Page   Trust-0.131156 %76 %
140Number of LinkedIn Pages   Authority-0.133126 %84 %
141Variations Making Whole LI Tags   Relevancy-0.134119 %84 %
142Has OpenGraph Image   Relevancy-0.131153 %71 %
143Number of Social Pages   Authority-0.1320458 %82 %
144Entities in H4 Tags-0.1314217 %90 %
145Number of H4 Tags   Size-0.1327330 %80 %
146Number of Social Accounts   Authority-0.137237 %86 %
147Uses Schema url   Other-0.131152 %73 %
148Uses JSON-LD url   Other-0.131140 %82 %
149Uses JSON-LD description   Other-0.131139 %77 %
150Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %81 %
151Number of Questions In H2 Tags   Size-0.134121 %80 %
152Percentage of DoFollow External Links   Authority-0.13241167 %85 %
153Variations making whole A Tags   Relevancy-0.13101224 %84 %
154Exact Matches in H1-H6 Tags   Relevancy-0.1313117 %88 %
155Number of Email Addresses   Trust-0.1358437 %83 %
156Has FavIcon   Technology-0.131170 %73 %
157Exact Matches in Sentences   Relevancy-0.1341319 %88 %
158Variations Making Whole Span Tags   Relevancy-0.139116 %86 %
159Number of Prices   Size-0.133919865 %80 %
160Uses JSON-LD ListItem   Other-0.131131 %77 %
161Number of Instagram Pages   Authority-0.1317240 %79 %
162Uses JSON-LD BreadcrumbList   Other-0.131131 %75 %
163Is OpenGraph Type Article   Technology-0.131130 %67 %
164Is Article Page   Other-0.131140 %73 %
165Inline JavaScript Kilobytes   Size-0.1352415675 %71 %
166Uses Schema listitem   Other-0.131139 %70 %
167Variations in the last 100 words   Relevancy-0.13129441 %84 %
168Number Of Claimed Brands   Other-0.1320222 %78 %
169Uses Schema description   Other-0.121146 %71 %
170Uses Schema breadcrumblist   Other-0.121139 %70 %
171Exact Matches in Title Tag   Relevancy-0.122114 %86 %
172Number of Questions In H3 Tags   Size-0.127116 %78 %
173Variations in TITLE Attributes   Relevancy-0.12509833 %82 %
174Uses Schema website   Other-0.121129 %66 %
175Has Email   Trust-0.121137 %75 %
176Uses JSON-LD datePublished   Other-0.121130 %66 %
177Number of Nofollow Links   Authority-0.1218422 %82 %
178Variations in Meta Twitter Description   Relevancy-0.1220122 %74 %
179Uses Schema datemodified   Other-0.121128 %63 %
180Exact Matches in Top 30KB   Relevancy-0.1212114 %85 %
181Number of Twitter Accounts   Authority-0.122120 %77 %
182Is Pagination Page   Other-0.121116 %67 %
183Uses JSON-LD dateModified   Other-0.121127 %66 %
184Uses JSON-LD ImageObject   Other-0.121129 %68 %
185Variations in I Tags   Relevancy-0.12394518 %83 %
186Uses JSON-LD Organization   Other-0.121129 %76 %
187Uses Schema organization   Other-0.121131 %73 %
188Uses Schema item   Other-0.121129 %61 %
189Uses Schema webpage   Other-0.121131 %68 %
190Leading Variations in H3 Tags   Relevancy-0.1210113 %79 %
191Percentage of NoFollow Links   Authority-0.1215220 %79 %
192Uses JSON-LD WebSite   Other-0.121126 %72 %
193Variations in Meta Twitter Content   Relevancy-0.125124 %73 %
194Has Meta Robots   Other-0.121122 %74 %
195Variations in Article Tags   Relevancy-0.1213381421 %83 %
196Uses JSON-LD inLanguage   Other-0.121125 %64 %
197Has Copyright   Trust-0.121161 %66 %
198Uses JSON-LD WebPage   Other-0.121129 %67 %
199Uses Schema imageobject   Other-0.121136 %61 %
200Uses Schema unitcode   Other-0.12114 %15 %