Measures 150048 SEO Factors

148326 Built-In SEO Factors

139129 On-page SEO Factors

9197 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 2026-03     previous

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Load Time Milliseconds   Performance-0.2320717144582 %92 %
2Number of Unique LSI Words Used   Diversity-0.22121728379 %79 %
3Number of Unique Variations Used   Diversity-0.2219677 %91 %
4Number of Top 200 Shared Factors Used   Diversity-0.22513896 %93 %
5Number of Top 100 Shared Factors Used   Diversity-0.22382996 %93 %
6Number of Top 50 Shared Factors Used   Diversity-0.21171295 %93 %
7Search Result Domain is .com, .net, or .org   Other-0.21116 %69 %
8Entities in Title Tag   Relevancy-0.218363 %88 %
9Variations in Search Result Document File Name   Relevancy-0.25140 %87 %
10Variations in H1-H6 Tags   Relevancy-0.2128761 %91 %
11Variations in H1, H2, and H3 Tags   Relevancy-0.2119660 %91 %
12Variations in H1 and H2 Tags   Relevancy-0.240458 %90 %
13Search Result Domain is .com   Other-0.2116 %68 %
14Number of Factors Used   Diversity-0.227917396 %90 %
15Number of Distinct Entities Used   Diversity-0.19632673 %88 %
16Variations in P Tags   Relevancy-0.198502663 %91 %
17Variations in Search Result URL Path   Relevancy-0.195142 %87 %
18Variations in Body Tags   Relevancy-0.196431124476 %90 %
19Variations in HTML Tags   Relevancy-0.196431124475 %90 %
20Variations in Div Tags   Relevancy-0.182011910371 %91 %
21Entities in H1 Tags-0.1810251 %87 %
22Variations in Search Result URL   Relevancy-0.1817251 %84 %
23Entities in H2 Tags-0.1844749 %88 %
24Variations in Sentences   Relevancy-0.1823293169 %90 %
25Variations in H1 Tags   Relevancy-0.188151 %88 %
26Term Frequency   Relevancy-0.184376 %90 %
27Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1811240 %87 %
28Variations in LI Tags   Relevancy-0.1815631961 %90 %
29Variations in A Tags   Relevancy-0.1829372261 %88 %
30Variations in the Title Tag   Relevancy-0.189263 %86 %
31Leading Variations in H1-H6 Tags   Relevancy-0.1812242 %87 %
32Word Count   Size-0.176869134281 %90 %
33Unabridged Word Count   Size-0.1714365173981 %90 %
34Variations in H2 Tags   Relevancy-0.1732344 %88 %
35Variations in Search Result Link Text   Relevancy-0.1710278 %84 %
36Variations in Search Result Display URL   Relevancy-0.1710278 %84 %
37LSI Words in Sentences   Relevancy-0.17422265862 %96 %
38Variation Count in Top 30KB   Relevancy-0.1741412364 %89 %
39Clean Text Kilobytes   Size-0.17761270 %90 %
40Variations in First 100 Words   Relevancy-0.17118665 %88 %
41Number of P Tags   Size-0.171463570 %89 %
42Variations in the Canonical URL   Relevancy-0.1722246 %86 %
43Entities in the HTML Tag   Relevancy-0.1760912064 %96 %
44Number of HTML Tags   Size-0.174502100982 %88 %
45Entities in Sentences   Relevancy-0.1760611760 %96 %
46TF/IDF   Relevancy-0.171156 %87 %
47Number of Images   Size-0.173223472 %88 %
48Number of H1 Tags   Size-0.174166 %89 %
49Number of Heading Tags   Size-0.17762072 %90 %
50LSI Words in Title Tag   Relevancy-0.1617564 %92 %
51Leading Variations in Title Tag   Relevancy-0.161130 %86 %
52Variations in Absolute URLs   Relevancy-0.1665735058 %89 %
53Variations in Distinct A Tag HREF Attributes   Relevancy-0.1610692257 %88 %
54Number of Referring Domains   Authority-0.162360113341 %69 %
55Number of Images with ALT Text   Size-0.162922666 %88 %
56Variations in A Tag HREF Attributes   Relevancy-0.1616003556 %89 %
57Number of H2 Tags   Size-0.1624765 %90 %
58Leading Variations in H1 Tags   Relevancy-0.162126 %86 %
59Variations in Script Tags   Relevancy-0.16244757961 %85 %
60Flesch Kincaid Reading Grade Level   Other-0.166192 %88 %
61LSI Words in H1 Tags   Relevancy-0.1622453 %93 %
62Number of Backlinks   Authority-0.16653492886741 %70 %
63Variations in Meta Description   Relevancy-0.1623253 %85 %
64Number of HTTPS Links   Authority-0.16191914476 %87 %
65Number of DoFollow Links   Authority-0.16191814276 %87 %
66Variations in ALT Attributes   Relevancy-0.16861643 %87 %
67Number of Links   Authority-0.16192014576 %87 %
68Clean Keyword Density in the HTML Tag   Relevancy-0.16136468 %83 %
69Variations in Span Tags   Relevancy-0.16582847 %88 %
70Percentage of DoFollow Links   Authority-0.16988176 %89 %
71Number of Internal Links   Authority-0.1674313075 %88 %
72Variation Density in Top 30KB   Relevancy-0.16192259 %84 %
73Number of Facebook Pages   Authority-0.1610254 %84 %
74Exact Matches in the HTML Tag   Relevancy-0.16271924 %87 %
75Number of Includes   Technology-0.16522578 %83 %
76Number of Sentences   Size-0.1654012279 %85 %
77LSI Words in H2 Tags   Relevancy-0.161171953 %94 %
78Search Result Number of Dirs in Path   Other-0.165269 %79 %
79Variations in OpenGraph Title   Relevancy-0.166152 %83 %
80Has Entities in H1 Tags   Relevancy-0.161151 %84 %
81Number of Do Follow Backlinks   Authority-0.16653204760937 %69 %
82Entities in H3 Tags-0.1535640 %87 %
83Has Meta Charset   Technology-0.151169 %83 %
84Has JSON-LD Schema Markup   Relevancy-0.151151 %83 %
85Entities in Meta Description Tag   Relevancy-0.159353 %84 %
86Number Of JSON-LD Types   Relevancy-0.151331453 %86 %
87Percentage of DoFollow Internal Links   Authority-0.15907075 %86 %
88Variations in Main Tags   Relevancy-0.15109155336 %86 %
89Variations in Nav Tags   Relevancy-0.1514501944 %87 %
90Inline CSS Kilobytes   Size-0.151996163 %83 %
91Has Meta Viewport   Technology-0.151178 %85 %
92Variations in H3 Tags   Relevancy-0.1580333 %88 %
93Has Entities in H2 Tags   Relevancy-0.151150 %85 %
94Average Words Per Sentence   Size-0.151943073 %83 %
95Search Result Uses HTTPS   Other-0.151181 %83 %
96Number of No Follow Backlinks   Authority-0.15299474135831 %63 %
97Number of DoFollow External Links   Authority-0.1516031370 %86 %
98Number of HTML Comments   Size-0.1510574967 %85 %
99Number of H3 Tags   Size-0.1540856 %88 %
100Variations in OpenGraph Description   Relevancy-0.1521247 %84 %
101Number of JavaScript Includes   Technology-0.15351678 %82 %
102Number of External Links   Authority-0.1516041572 %86 %
103Number of Absolute URLs   Authority-0.15209728480 %80 %
104Number of Images without ALT Text   Size-0.1569953 %86 %
105Search Result Domain Length   Size-0.14251781 %82 %
106Search Result Host Length   Size-0.14251781 %82 %
107Variations in Section Tags   Relevancy-0.145611736 %86 %
108Number of US Phone Numbers   Trust-0.147021643 %80 %
109Number of Social Pages   Authority-0.1424459 %84 %
110Leading Variations in H2 Tags   Relevancy-0.144121 %83 %
111Title Tag Has Entities   Relevancy-0.141163 %81 %
112Number of LinkedIn Pages   Authority-0.146129 %85 %
113LSI Words in Meta Description Tag   Relevancy-0.14321053 %90 %
114Number of Forms   Technology-0.1414248 %82 %
115Variations making whole H1-H6 Tags   Relevancy-0.142115 %84 %
116Uses JSON-LD name   Other-0.141150 %81 %
117Number of Questions In Headings   Size-0.148235 %85 %
118Has Canonical URL   Authority-0.141167 %79 %
119Variations making whole H1, H2, and H3 Tags   Relevancy-0.141113 %85 %
120Page Size Kilobytes   Size-0.1490830880 %75 %
121Number of Email Addresses   Trust-0.14128440 %82 %
122Percentage of DoFollow External Links   Authority-0.14321169 %81 %
123Number of CSS Includes   Technology-0.1419970 %79 %
124Variations in Strong Tags   Relevancy-0.1427225 %85 %
125Number of Questions   Size-0.142371265 %79 %
126LSI Words in H3 Tags   Relevancy-0.142052045 %93 %
127Has US Phone Number   Trust-0.131143 %74 %
128Number of Instagram Pages   Authority-0.1320239 %80 %
129Uses Schema name   Other-0.131157 %75 %
130Has FavIcon   Technology-0.131172 %77 %
131Variations in Footer Tags   Relevancy-0.139311034 %85 %
132Inline JavaScript Kilobytes   Size-0.1346312077 %71 %
133Title Word Count   Size-0.1330880 %73 %
134Variations making whole A Tags   Relevancy-0.1313126 %82 %
135Variations Making Whole Span Tags   Relevancy-0.1311118 %83 %
136Has Schema Markup   Relevancy-0.131160 %75 %
137Has Form   Technology-0.131148 %79 %
138Number of Prices   Size-0.1310318265 %78 %
139Title Length   Size-0.131865080 %75 %
140Variations Making Whole LI Tags   Relevancy-0.135122 %82 %
141Number of H4 Tags   Size-0.1323333 %83 %
142Uses JSON-LD BreadcrumbList   Other-0.131132 %77 %
143Number of Social Accounts   Authority-0.1314239 %82 %
144Meta Description Length   Size-0.1330011664 %77 %
145Uses JSON-LD ListItem   Other-0.131133 %78 %
146Uses JSON-LD url   Other-0.131144 %81 %
147Headings Has Question   Other-0.131135 %80 %
148Number of Questions In H2 Tags   Size-0.134123 %83 %
149Has Email   Trust-0.131140 %74 %
150Word Count in Meta Description   Size-0.13481964 %77 %
151Variations in the last 100 words   Relevancy-0.13116348 %77 %
152Uses Schema url   Other-0.131153 %72 %
153Variations in TITLE Attributes   Relevancy-0.13260536 %81 %
154Is Store Page   Other-0.131143 %70 %
155Has Contact Page   Trust-0.131157 %77 %
156Exact Matches in H1-H6 Tags   Relevancy-0.1311115 %88 %
157Exact Matches in Top 30KB   Relevancy-0.1326214 %85 %
158Has Meta Description   Relevancy-0.121163 %74 %
159Variations in I Tags   Relevancy-0.12293423 %81 %
160Number Of Claimed Brands   Other-0.1243223 %83 %
161Number of Facebook Accounts   Authority-0.123126 %78 %
162Has OpenGraph Type   Relevancy-0.121158 %73 %
163Has Entities in H3 Tags   Relevancy-0.121141 %80 %
164Uses JSON-LD description   Other-0.121139 %74 %
165Has Privacy Policy   Trust-0.121153 %77 %
166Entities in H4 Tags-0.1225219 %84 %
167Is Article Page   Other-0.121141 %75 %
168Uses Schema breadcrumblist   Other-0.121139 %70 %
169Uses Schema postaladdress   Other-0.121120 %69 %
170Variations in Article Tags   Relevancy-0.122561122 %80 %
171Uses Schema addresslocality   Other-0.121120 %69 %
172Variations making whole H1 Tags   Relevancy-0.12118 %83 %
173Uses Schema listitem   Other-0.121140 %70 %
174Uses Microdata potentialAction   Other-0.12114 %18 %
175Number of Questions In H3 Tags   Size-0.125116 %80 %
176Uses JSON-LD PostalAddress   Other-0.121119 %69 %
177Uses Schema postalcode   Other-0.121118 %68 %
178Variations in H4-H6 Tags   Relevancy-0.1210117 %80 %
179Has Apple Touch Icon   Technology-0.121148 %74 %
180Uses Microdata target   Other-0.12113 %19 %
181Uses Schema streetaddress   Other-0.121118 %69 %
182Uses Schema webpage   Other-0.121132 %72 %
183Exact Matches in Title Tag   Relevancy-0.122113 %85 %
184Uses Microdata SearchAction   Other-0.12113 %19 %
185Uses JSON-LD addressLocality   Other-0.121118 %70 %
186Uses JSON-LD postalCode   Other-0.121117 %69 %
187Is OpenGraph Type Article   Technology-0.121130 %68 %
188Has OpenGraph Image   Relevancy-0.121151 %71 %
189Leading Variations in H3 Tags   Relevancy-0.127114 %80 %
190Number of Twitter Accounts   Authority-0.1213122 %78 %
191Uses JSON-LD ImageObject   Other-0.121129 %74 %
192Uses JSON-LD streetAddress   Other-0.121117 %69 %
193Uses Schema organization   Other-0.121133 %71 %
194Meta Description Tag Has Entities   Relevancy-0.121153 %76 %
195Uses JSON-LD item   Other-0.121120 %73 %
196Uses Schema potentialaction   Other-0.12114 %18 %
197Has Meta Twitter Card   Authority-0.121151 %67 %
198Uses Schema website   Other-0.121133 %72 %
199Exact Matches in Sentences   Relevancy-0.1243216 %89 %
200Uses Schema addressregion   Other-0.121120 %63 %