Measures 147891 SEO Factors

146169 Built-In SEO Factors

137003 On-page SEO Factors

9166 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 2026-01     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-0.2455129078 %66 %
2Entities in Title Tag   Relevancy-0.235369 %95 %
3Number of Referring Domains   Authority-0.23138912948 %79 %
4Search Result Domain is .com, .net, or .org   Other-0.23116 %76 %
5Number of Backlinks   Authority-0.23103898637748 %79 %
6Number of Do Follow Backlinks   Authority-0.2291200579045 %79 %
7Number of Distinct Entities Used   Diversity-0.22503182 %100 %
8Number of Unique Variations Used   Diversity-0.2213780 %89 %
9Search Result Domain is .com   Other-0.22115 %74 %
10Number of No Follow Backlinks   Authority-0.221269859938 %66 %
11Entities in the HTML Tag   Relevancy-0.2148214778 %100 %
12Number of Top 100 Shared Factors Used   Diversity-0.21362998 %95 %
13Number of Top 200 Shared Factors Used   Diversity-0.21483898 %95 %
14Load Time Milliseconds   Performance-0.215029159082 %89 %
15Variations in Search Result Document File Name   Relevancy-0.22147 %79 %
16Entities in Sentences   Relevancy-0.241914273 %100 %
17Variations in First 100 Words   Relevancy-0.215671 %82 %
18Entities in H2 Tags-0.218754 %97 %
19Variations in Sentences   Relevancy-0.2853669 %95 %
20Number of Top 50 Shared Factors Used   Diversity-0.19151297 %92 %
21Variations in Search Result URL Path   Relevancy-0.193150 %79 %
22Variations in Absolute URLs   Relevancy-0.191075265 %82 %
23Number of Factors Used   Diversity-0.1923617498 %87 %
24Variations in A Tag HREF Attributes   Relevancy-0.19884159 %79 %
25Number of HTML Comments   Size-0.191743966 %84 %
26Variations in H1-H6 Tags   Relevancy-0.1917865 %84 %
27Variations in Distinct A Tag HREF Attributes   Relevancy-0.19632659 %79 %
28Entities in H1 Tags-0.194252 %97 %
29Variations in Div Tags   Relevancy-0.1828711471 %92 %
30Variations in Body Tags   Relevancy-0.1855023079 %89 %
31Variations in A Tags   Relevancy-0.18492065 %79 %
32Variations in LI Tags   Relevancy-0.18482064 %84 %
33Number of Images   Size-0.181383971 %87 %
34Clean Keyword Density in the HTML Tag   Relevancy-0.186471 %74 %
35Variations in Nav Tags   Relevancy-0.18602244 %76 %
36Number of H1 Tags   Size-0.182166 %76 %
37Variations in H1, H2, and H3 Tags   Relevancy-0.1815764 %87 %
38Variations in H1 Tags   Relevancy-0.182156 %74 %
39Variations in H1 and H2 Tags   Relevancy-0.188463 %84 %
40Word Count   Size-0.1810039155182 %89 %
41Number of Includes   Technology-0.18402878 %79 %
42Variations in HTML Tags   Relevancy-0.1855022075 %95 %
43Number of HTML Tags   Size-0.173653110682 %89 %
44Number of P Tags   Size-0.173004170 %92 %
45Number of Images with ALT Text   Size-0.171072566 %92 %
46Clean Text Kilobytes   Size-0.171531471 %87 %
47Unabridged Word Count   Size-0.1727504259582 %92 %
48Variations in P Tags   Relevancy-0.17692962 %89 %
49Variations in the Title Tag   Relevancy-0.172265 %84 %
50Number of Sentences   Size-0.1723412080 %87 %
51Number of Heading Tags   Size-0.17412071 %87 %
52Number of Facebook Pages   Authority-0.173254 %74 %
53Variations in Script Tags   Relevancy-0.172447564 %79 %
54Number of Forms   Technology-0.176248 %84 %
55Entities in Meta Description Tag   Relevancy-0.177360 %97 %
56Variations in the Canonical URL   Relevancy-0.173254 %82 %
57Leading Variations in H1, H2, and H3 Tags   Relevancy-0.173243 %89 %
58Page Size Kilobytes   Size-0.1756633880 %71 %
59Entities in H3 Tags-0.1718746 %100 %
60Leading Variations in H1-H6 Tags   Relevancy-0.175244 %92 %
61Has Entities in H2 Tags   Relevancy-0.161155 %89 %
62Has Entities in H1 Tags   Relevancy-0.161154 %84 %
63Variations in Main Tags   Relevancy-0.162746735 %87 %
64Inline JavaScript Kilobytes   Size-0.1632912377 %74 %
65Variations in Search Result URL   Relevancy-0.163260 %71 %
66Variations in Span Tags   Relevancy-0.1624949 %89 %
67Title Tag Has Entities   Relevancy-0.161170 %89 %
68Variations in H2 Tags   Relevancy-0.166348 %87 %
69Leading Variations in H1 Tags   Relevancy-0.161125 %87 %
70Number of H2 Tags   Size-0.1611762 %87 %
71Number of Links   Authority-0.1631413577 %87 %
72Number of DoFollow Links   Authority-0.1630013177 %87 %
73Number of Internal Links   Authority-0.1629412277 %87 %
74Exact Matches in the HTML Tag   Relevancy-0.162131925 %79 %
75Number Of JSON-LD Types   Relevancy-0.16331253 %82 %
76Number of HTTPS Links   Authority-0.1631313477 %87 %
77Number of JavaScript Includes   Technology-0.16271877 %84 %
78Term Frequency   Relevancy-0.164375 %92 %
79Number of Absolute URLs   Authority-0.1695133280 %82 %
80Variations in ALT Attributes   Relevancy-0.16911249 %89 %
81Percentage of DoFollow Links   Authority-0.16938077 %92 %
82Variations in Search Result Display URL   Relevancy-0.162284 %76 %
83Variations in Search Result Link Text   Relevancy-0.162284 %76 %
84Percentage of DoFollow Internal Links   Authority-0.16847076 %89 %
85Inline CSS Kilobytes   Size-0.161536366 %79 %
86Average Words Per Sentence   Size-0.15452574 %79 %
87Has JSON-LD Schema Markup   Relevancy-0.151150 %76 %
88Uses JSON-LD transcript   Other-0.15112 %13 %
89Uses Schema transcript   Other-0.15112 %13 %
90Variations in Footer Tags   Relevancy-0.1550738 %79 %
91LSI Words in Title Tag   Relevancy-0.159452 %97 %
92Number of External Links   Authority-0.15281470 %82 %
93LSI Words in Sentences   Relevancy-0.15143852851 %100 %
94Number of DoFollow External Links   Authority-0.15261269 %79 %
95Search Result Domain Length   Size-0.15221682 %79 %
96Search Result Host Length   Size-0.15221682 %79 %
97Flesch Kincaid Reading Grade Level   Other-0.155194 %92 %
98Variations in OpenGraph Title   Relevancy-0.152158 %87 %
99Number of CSS Includes   Technology-0.15181070 %82 %
100Has Meta Charset   Technology-0.151169 %87 %
101Number of Instagram Pages   Authority-0.155243 %74 %
102Variations Making Whole Span Tags   Relevancy-0.152122 %71 %
103Variations in the last 100 words   Relevancy-0.158350 %79 %
104Number of Images without ALT Text   Size-0.15681456 %89 %
105Variations in Meta Description   Relevancy-0.143258 %84 %
106Number of US Phone Numbers   Trust-0.14331150 %79 %
107Entities in H4 Tags-0.145221 %89 %
108TF/IDF   Relevancy-0.141160 %92 %
109Uses Microdata LocalBusiness   Other-0.14111 %18 %
110Entities in H5 Tags-0.143110 %82 %
111Number of Facebook Accounts   Authority-0.141126 %79 %
112Is Purchase Page   Other-0.141139 %71 %
113Has Form   Technology-0.141147 %92 %
114Search Result Uses HTTPS   Other-0.141182 %82 %
115Variations making whole H1, H2, and H3 Tags   Relevancy-0.141118 %84 %
116Variations making whole H1-H6 Tags   Relevancy-0.141120 %82 %
117Search Result Number of Dirs in Path   Other-0.143271 %82 %
118Is OpenGraph Type Article   Technology-0.141134 %63 %
119Number of H6 Tags   Size-0.146111 %66 %
120Variations in Class Attributes   Relevancy-0.1420316 %68 %
121Has Meta Viewport   Technology-0.141178 %84 %
122Variations making whole H1 Tags   Relevancy-0.141110 %82 %
123Number of Social Accounts   Authority-0.143241 %87 %
124Number of Social Pages   Authority-0.149562 %79 %
125Uses JSON-LD author   Other-0.14112 %26 %
126Uses Schema organization   Other-0.141134 %76 %
127Is Home Page   Other-0.141119 %53 %
128Uses JSON-LD url   Other-0.141144 %84 %
129Number of Email Addresses   Trust-0.1413541 %66 %
130Title Length   Size-0.14774780 %76 %
131Leading Variations in H4-H6 Tags   Relevancy-0.142110 %74 %
132LSI Words in H2 Tags   Relevancy-0.14491640 %100 %
133Variation Count in Top 30KB   Relevancy-0.14691965 %87 %
134Uses JSON-LD Organization   Other-0.131131 %76 %
135Leading Variations in Title Tag   Relevancy-0.131129 %89 %
136Variation Density in Top 30KB   Relevancy-0.133263 %79 %
137Uses JSON-LD DataFeedItem   Other-0.13112 %18 %
138Uses Schema datafeeditem   Other-0.13112 %18 %
139Variations in H4-H6 Tags   Relevancy-0.136220 %76 %
140Variations in H3 Tags   Relevancy-0.139337 %92 %
141Variations in Aside Tags   Relevancy-0.1319410 %58 %
142Uses Microdata address   Other-0.13112 %18 %
143Variations in OpenGraph Description   Relevancy-0.133254 %89 %
144Exact Matches in Sentences   Relevancy-0.1323418 %76 %
145Number of H3 Tags   Size-0.1318856 %89 %
146Uses Schema item   Other-0.131126 %66 %
147Has US Phone Number   Trust-0.131151 %71 %
148Percentage of DoFollow External Links   Authority-0.13181069 %84 %
149Number of Questions   Size-0.13241064 %82 %
150Has Canonical URL   Authority-0.131169 %92 %
151Leading Variations in H2 Tags   Relevancy-0.132122 %76 %
152Uses JSON-LD name   Other-0.131149 %84 %
153Number of Meta Generator Tags   Technology-0.132135 %66 %
154Exact Matches in Top 30KB   Relevancy-0.139216 %76 %
155Title Word Count   Size-0.1311779 %79 %
156Number of LinkedIn Pages   Authority-0.133130 %84 %
157Has Entities in H3 Tags   Relevancy-0.131147 %92 %
158Number Of Claimed Brands   Other-0.139222 %87 %
159Exact Matches in H1-H6 Tags   Relevancy-0.133115 %84 %
160Has Apple Touch Icon   Technology-0.131147 %68 %
161Has RSS Link   Authority-0.131131 %63 %
162Variations in I Tags   Relevancy-0.139424 %79 %
163Number of Nofollow Links   Authority-0.1314521 %71 %
164Variations in Section Tags   Relevancy-0.13661635 %84 %
165Variations in Value Attributes   Relevancy-0.133110 %82 %
166Number of YouTube Accounts   Technology-0.13119 %74 %
167Variations in Figure Tags   Relevancy-0.1323713 %66 %
168Is Category Page   Other-0.131115 %58 %
169Meta Description Tag Has Entities   Relevancy-0.131160 %87 %
170Word Count in Meta Description   Size-0.13221764 %76 %
171Variations making whole A Tags   Relevancy-0.133230 %76 %
172LSI Words in H1 Tags   Relevancy-0.138339 %95 %
173Exact Matches in Title Tag   Relevancy-0.131113 %82 %
174Number of Twitter Accounts   Authority-0.132126 %82 %
175Number of Questions In Headings   Size-0.139232 %82 %
176Has FavIcon   Technology-0.131173 %82 %
177Number of Prices   Size-0.13196313368 %82 %
178Has DocType Tag   Technology-0.121171 %53 %
179Has Contact Page   Trust-0.121161 %76 %
180Is Store Page   Other-0.121142 %71 %
181Has OpenGraph Image   Relevancy-0.121150 %68 %
182Variations in Meta Twitter Description   Relevancy-0.122128 %68 %
183Uses RDFa description   Other-0.12113 %13 %
184Uses JSON-LD contactOption   Other-0.12112 %29 %
185Uses Schema contactoption   Other-0.12112 %29 %
186LSI Words in Meta Description Tag   Relevancy-0.1218843 %100 %
187Has Terms of Service   Trust-0.121142 %61 %
188Has Domain Phrase In Title   Trust-0.121117 %68 %
189Uses JSON-LD additionalType   Other-0.12113 %21 %
190Meta Description Length   Size-0.1214211065 %76 %
191Uses JSON-LD ListItem   Other-0.121129 %76 %
192Uses JSON-LD uploadDate   Other-0.12115 %42 %
193Uses JSON-LD itemListOrder   Other-0.12112 %42 %
194Uses Schema itemlistorder   Other-0.12112 %42 %
195Uses Schema url   Other-0.121155 %82 %
196Has Entities in H4 Tags   Relevancy-0.121122 %82 %
197Variations in OpenGraph Site Name   Relevancy-0.121123 %53 %
198Uses Microdata telephone   Other-0.12113 %29 %
199Uses JSON-LD alternativeHeadline   Other-0.12112 %24 %
200Uses Schema alternativeheadline   Other-0.12112 %24 %