Measures 150883 SEO Factors

149161 Built-In SEO Factors

139947 On-page SEO Factors

9214 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-0.2486224782 %80 %
2Load Time Milliseconds   Performance-0.2214200157184 %89 %
3Number of Referring Domains   Authority-0.224855019241 %88 %
4Number of Backlinks   Authority-0.22227556945131841 %87 %
5Number of Top 200 Shared Factors Used   Diversity-0.21523795 %89 %
6Number of Top 50 Shared Factors Used   Diversity-0.21161294 %87 %
7Number of Top 100 Shared Factors Used   Diversity-0.21382895 %89 %
8Number of Do Follow Backlinks   Authority-0.21225040955136537 %86 %
9Search Result Domain is .com, .net, or .org   Other-0.2116 %76 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.2174758 %82 %
11Variations in H1-H6 Tags   Relevancy-0.2229859 %82 %
12Search Result Domain is .com   Other-0.19116 %77 %
13Number of Unique Variations Used   Diversity-0.19521078 %80 %
14Variations in H1 and H2 Tags   Relevancy-0.1983456 %83 %
15Number of No Follow Backlinks   Authority-0.19251600132028 %84 %
16Clean Text Kilobytes   Size-0.19981270 %88 %
17Variations in P Tags   Relevancy-0.1923593661 %86 %
18Unabridged Word Count   Size-0.1916706171883 %87 %
19Word Count   Size-0.193779130983 %87 %
20Number of Heading Tags   Size-0.191171971 %82 %
21Number of Includes   Technology-0.19522577 %79 %
22Number of P Tags   Size-0.191033469 %85 %
23Entities in Sentences   Relevancy-0.1947712465 %91 %
24Number of Distinct Entities Used   Diversity-0.18622774 %91 %
25Number of H2 Tags   Size-0.1821765 %84 %
26LSI Words in Sentences   Relevancy-0.18251463565 %91 %
27Entities in H2 Tags-0.1850648 %89 %
28Variations in Div Tags   Relevancy-0.182826016469 %86 %
29Entities in the HTML Tag   Relevancy-0.1848212770 %90 %
30Variations in LI Tags   Relevancy-0.189852258 %83 %
31Variations in Search Result Document File Name   Relevancy-0.185143 %83 %
32Number of Images   Size-0.181362470 %85 %
33Number of Factors Used   Diversity-0.1851918695 %83 %
34Number of H1 Tags   Size-0.183166 %87 %
35Has Meta Charset   Technology-0.181171 %81 %
36Number of Images with ALT Text   Size-0.181221765 %89 %
37Number of DoFollow External Links   Authority-0.18561273 %88 %
38Number of HTML Tags   Size-0.18307395383 %86 %
39Variations in H2 Tags   Relevancy-0.1875343 %82 %
40Number of Facebook Pages   Authority-0.184253 %85 %
41Number of External Links   Authority-0.17601373 %90 %
42Has JSON-LD Schema Markup   Relevancy-0.171150 %79 %
43Leading Variations in H1-H6 Tags   Relevancy-0.1712243 %80 %
44Number of Links   Authority-0.1758513578 %87 %
45Number of DoFollow Links   Authority-0.1757813278 %89 %
46Entities in H3 Tags-0.1753639 %89 %
47Variations in A Tags   Relevancy-0.1745523158 %83 %
48Number of HTTPS Links   Authority-0.1758513378 %89 %
49Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %81 %
50LSI Words in H2 Tags   Relevancy-0.171041754 %90 %
51Variations in Body Tags   Relevancy-0.177518040275 %82 %
52Variations in H1 Tags   Relevancy-0.178150 %84 %
53Variation Count in Top 30KB   Relevancy-0.1750124164 %85 %
54Number of Internal Links   Authority-0.1757312277 %87 %
55Entities in Title Tag   Relevancy-0.176364 %89 %
56Variations in HTML Tags   Relevancy-0.177518039574 %84 %
57Has Entities in H2 Tags   Relevancy-0.161150 %85 %
58Average Words Per Sentence   Size-0.161682875 %88 %
59Variations in Search Result URL Path   Relevancy-0.165146 %81 %
60Number of CSS Includes   Technology-0.1624970 %78 %
61Entities in H1 Tags-0.1613250 %88 %
62Number of Instagram Pages   Authority-0.1615241 %82 %
63Variations in A Tag HREF Attributes   Relevancy-0.1617404253 %84 %
64Variations in Distinct A Tag HREF Attributes   Relevancy-0.169182554 %84 %
65Number of H3 Tags   Size-0.1638854 %82 %
66Variations in Search Result Link Text   Relevancy-0.168278 %79 %
67Number of Images without ALT Text   Size-0.1646851 %82 %
68Variations in Main Tags   Relevancy-0.16139238435 %82 %
69Variations in Span Tags   Relevancy-0.167991145 %86 %
70Has Entities in H1 Tags   Relevancy-0.161152 %87 %
71Number of HTML Comments   Size-0.167325068 %83 %
72Term Frequency   Relevancy-0.166375 %82 %
73Flesch Kincaid Reading Grade Level   Other-0.166291 %89 %
74Variations in Search Result Display URL   Relevancy-0.158279 %81 %
75Number of LinkedIn Pages   Authority-0.157129 %85 %
76Variations in Sentences   Relevancy-0.1524414569 %85 %
77Number of Forms   Technology-0.1518246 %77 %
78Variations in ALT Attributes   Relevancy-0.15113638 %80 %
79Variations in Absolute URLs   Relevancy-0.1554927358 %86 %
80Variations in the Title Tag   Relevancy-0.1510264 %80 %
81Variations in First 100 Words   Relevancy-0.15177763 %82 %
82LSI Words in H1 Tags   Relevancy-0.1529455 %91 %
83Search Result Number of Dirs in Path   Other-0.153275 %79 %
84Variations in Nav Tags   Relevancy-0.1572384243 %81 %
85Variations in Search Result URL   Relevancy-0.1515254 %77 %
86Variations in the Canonical URL   Relevancy-0.1542247 %81 %
87LSI Words in H3 Tags   Relevancy-0.15951744 %86 %
88Has Form   Technology-0.151145 %74 %
89Number of Facebook Accounts   Authority-0.152125 %82 %
90Number of Questions In Headings   Size-0.158236 %84 %
91Number Of JSON-LD Types   Relevancy-0.15761354 %82 %
92Variations in H3 Tags   Relevancy-0.1592331 %81 %
93Variations in OpenGraph Title   Relevancy-0.148255 %73 %
94Variations in Section Tags   Relevancy-0.1415222134 %85 %
95Number of Social Pages   Authority-0.1418460 %87 %
96Number of Sentences   Size-0.1462113281 %78 %
97Percentage of DoFollow External Links   Authority-0.14261172 %83 %
98Number of US Phone Numbers   Trust-0.1411541435 %80 %
99Number of Social Accounts   Authority-0.144239 %85 %
100Percentage of DoFollow Links   Authority-0.14998378 %81 %
101Leading Variations in H1 Tags   Relevancy-0.141127 %80 %
102Search Result Summary Length   Size-0.1416015195 %77 %
103Has Entities in H3 Tags   Relevancy-0.141140 %84 %
104Variation Density in Top 30KB   Relevancy-0.14299462 %76 %
105TF/IDF   Relevancy-0.141155 %80 %
106Search Result Host Length   Size-0.14241784 %77 %
107Number of Questions In H2 Tags   Size-0.143123 %79 %
108Headings Has Question   Other-0.141136 %80 %
109Variations in Meta Description   Relevancy-0.1434252 %82 %
110Exact Matches in the HTML Tag   Relevancy-0.142641728 %83 %
111Uses JSON-LD name   Other-0.141151 %76 %
112Search Result Uses HTTPS   Other-0.141183 %77 %
113Number of JavaScript Includes   Technology-0.14421779 %79 %
114Has US Phone Number   Trust-0.141135 %75 %
115Search Result Domain Length   Size-0.13241784 %79 %
116Number of Twitter Accounts   Authority-0.131118 %78 %
117Clean Keyword Density in the HTML Tag   Relevancy-0.13183467 %71 %
118Variations making whole H1-H6 Tags   Relevancy-0.132116 %74 %
119Leading Variations in Title Tag   Relevancy-0.131132 %76 %
120Variations in Footer Tags   Relevancy-0.1351281934 %83 %
121Number of H4 Tags   Size-0.1346332 %78 %
122Has Meta Viewport   Technology-0.131181 %72 %
123Is Home Page   Other-0.131115 %54 %
124Entities in Meta Description Tag   Relevancy-0.137353 %84 %
125Inline CSS Kilobytes   Size-0.132246165 %80 %
126Has Meta Robots   Other-0.131124 %75 %
127Is Article Page   Other-0.131142 %74 %
128Exact Matches in Top 30KB   Relevancy-0.1314219 %80 %
129Has Apple Touch Icon   Technology-0.131149 %75 %
130Percentage of DoFollow Internal Links   Authority-0.13917276 %76 %
131Title Tag Has Entities   Relevancy-0.131163 %79 %
132Variations Making Whole LI Tags   Relevancy-0.136122 %77 %
133Variations making whole A Tags   Relevancy-0.135126 %75 %
134Exact Matches in H1-H6 Tags   Relevancy-0.139119 %81 %
135Number of Absolute URLs   Authority-0.13152425683 %67 %
136Variations in Script Tags   Relevancy-0.131286611462 %77 %
137Leading Variations in H2 Tags   Relevancy-0.1310122 %83 %
138Uses JSON-LD GovernmentOrganization   Other-0.13112 %11 %
139Uses JSON-LD url   Other-0.131145 %73 %
140Variations in OpenGraph Description   Relevancy-0.1335248 %80 %
141Number of Questions   Size-0.13801467 %68 %
142Variations making whole H1, H2, and H3 Tags   Relevancy-0.121114 %75 %
143Number of Email Addresses   Trust-0.1230442 %80 %
144Has Contact Page   Trust-0.121161 %67 %
145Number Of Claimed Brands   Other-0.1214223 %78 %
146Entities in H4 Tags-0.1210218 %86 %
147Variations in Strong Tags   Relevancy-0.1274224 %80 %
148Uses Schema governmentorganization   Other-0.12112 %12 %
149Uses JSON-LD description   Other-0.121141 %71 %
150LSI Words in Title Tag   Relevancy-0.1212569 %86 %
151Number of HREF Lang Tags   Size-0.1224210 %80 %
152Variations in I Tags   Relevancy-0.12215419 %83 %
153Has FavIcon   Technology-0.121175 %69 %
154LSI Words in Meta Description Tag   Relevancy-0.12281056 %87 %
155Variations Making Whole Span Tags   Relevancy-0.129119 %81 %
156Uses Schema datemodified   Other-0.121131 %62 %
157Uses JSON-LD Organization   Other-0.121130 %74 %
158Page Size Kilobytes   Size-0.1285232383 %62 %
159Has HREF Lang   Technology-0.121112 %75 %
160Has Canonical URL   Authority-0.121171 %70 %
161Uses JSON-LD datePublished   Other-0.121132 %70 %
162Uses Schema website   Other-0.121134 %63 %
163Uses JSON-LD ListItem   Other-0.121133 %70 %
164Number of Prices   Size-0.125699267 %77 %
165Uses JSON-LD dateModified   Other-0.121130 %69 %
166Uses JSON-LD representativeOfPage   Other-0.12111 %14 %
167LSI Words in H4 Tags   Relevancy-0.1249624 %80 %
168Leading Variations in H3 Tags   Relevancy-0.128116 %79 %
169Variations in Article Tags   Relevancy-0.124511424 %80 %
170Uses Schema webpage   Other-0.121132 %63 %
171Uses Schema organization   Other-0.121133 %68 %
172Variations in the last 100 words   Relevancy-0.12185447 %76 %
173Uses JSON-LD BreadcrumbList   Other-0.121133 %70 %
174Has Meta Description   Relevancy-0.121166 %65 %
175Variations in H4-H6 Tags   Relevancy-0.1155215 %79 %
176Number of Nofollow Links   Authority-0.1120321 %80 %
177Uses Schema representativeofpage   Other-0.11111 %14 %
178Variations in Button Tags   Relevancy-0.11825410 %78 %
179Uses JSON-LD ImageObject   Other-0.111130 %69 %
180Word Count in Meta Description   Size-0.11432066 %70 %
181Uses JSON-LD WebSite   Other-0.111131 %71 %
182Number of H5 Tags   Size-0.1137215 %74 %
183Uses Schema faqpage   Other-0.11118 %61 %
184Uses Schema postalcode   Other-0.111116 %59 %
185Has Email   Trust-0.111143 %76 %
186Number of Questions In H3 Tags   Size-0.114117 %80 %
187Uses JSON-LD mainEntity   Other-0.11111 %18 %
188Uses Schema inlanguage   Other-0.111129 %60 %
189Uses JSON-LD WebPage   Other-0.111129 %70 %
190Variations in ID Attributes   Relevancy-0.11688313 %82 %
191Has Google Verify   Technology-0.111118 %65 %
192Has OpenGraph Type   Relevancy-0.111162 %66 %
193Meta Description Length   Size-0.1121512266 %73 %
194Number of Meta Generator Tags   Technology-0.112133 %71 %
195Number of YouTube Accounts   Technology-0.11117 %77 %
196Meta Description Tag Has Entities   Relevancy-0.111153 %72 %
197Number of NoFollow External Links   Authority-0.1119214 %80 %
198Uses JSON-LD postalCode   Other-0.111115 %65 %
199Is Category Page   Other-0.111113 %67 %
200Uses Schema answer   Other-0.11119 %60 %