Measures 146073 SEO Factors

144351 Built-In SEO Factors

135235 On-page SEO Factors

9116 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 2025-11     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-0.2565330179 %94 %
2Number of Top 100 Shared Factors Used   Diversity-0.24372799 %95 %
3Number of Top 200 Shared Factors Used   Diversity-0.24493698 %96 %
4Entities in Title Tag   Relevancy-0.247364 %96 %
5Number of Unique Variations Used   Diversity-0.2315674 %95 %
6Entities in Sentences   Relevancy-0.2366913366 %96 %
7Number of Distinct Entities Used   Diversity-0.23572975 %96 %
8Number of Top 50 Shared Factors Used   Diversity-0.23151298 %96 %
9Entities in the HTML Tag   Relevancy-0.2367013671 %97 %
10Variations in Div Tags   Relevancy-0.233789869 %96 %
11LSI Words in Sentences   Relevancy-0.23201384470 %94 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.2220654 %88 %
13Variations in Sentences   Relevancy-0.221432867 %93 %
14Term Frequency   Relevancy-0.224374 %91 %
15Variation Count in Top 30KB   Relevancy-0.22751655 %92 %
16Search Result Domain is .com, .net, or .org   Other-0.22114 %83 %
17Variations in HTML Tags   Relevancy-0.2278320573 %96 %
18Variations in Body Tags   Relevancy-0.2278320573 %96 %
19Variations in H1-H6 Tags   Relevancy-0.2222756 %91 %
20Variations in Search Result URL Path   Relevancy-0.223140 %86 %
21Load Time Milliseconds   Performance-0.217346189080 %93 %
22Entities in H1 Tags-0.216251 %89 %
23Clean Keyword Density in the HTML Tag   Relevancy-0.217361 %87 %
24Variations in A Tags   Relevancy-0.21762055 %91 %
25Search Result Domain is .com   Other-0.21114 %82 %
26Variations in H1 and H2 Tags   Relevancy-0.2110352 %89 %
27Variations in LI Tags   Relevancy-0.21771855 %94 %
28Variations in P Tags   Relevancy-0.211312556 %93 %
29Variations in the Title Tag   Relevancy-0.213158 %93 %
30Number of Factors Used   Diversity-0.2125116399 %91 %
31TF/IDF   Relevancy-0.211150 %89 %
32Has Entities in H1 Tags   Relevancy-0.211152 %87 %
33Variations in the Canonical URL   Relevancy-0.24141 %89 %
34Number of HTML Tags   Size-0.23693109180 %88 %
35Variations in Search Result Display URL   Relevancy-0.22276 %88 %
36Variations in Search Result Link Text   Relevancy-0.22276 %88 %
37Number of Includes   Technology-0.2472575 %88 %
38Title Tag Has Entities   Relevancy-0.21165 %91 %
39Variations in Search Result Document File Name   Relevancy-0.23137 %89 %
40Unabridged Word Count   Size-0.24113195980 %93 %
41Search Result Number of Dirs in Path   Other-0.23274 %87 %
42Variations in Search Result URL   Relevancy-0.23151 %82 %
43Variations in First 100 Words   Relevancy-0.217556 %93 %
44Word Count   Size-0.22815144380 %92 %
45Variations in H1 Tags   Relevancy-0.22146 %87 %
46LSI Words in H1 Tags   Relevancy-0.215559 %90 %
47Variations in A Tag HREF Attributes   Relevancy-0.23233650 %95 %
48Clean Text Kilobytes   Size-0.2231369 %91 %
49LSI Words in Title Tag   Relevancy-0.215673 %95 %
50Variations in Distinct A Tag HREF Attributes   Relevancy-0.22442150 %94 %
51Variation Density in Top 30KB   Relevancy-0.27253 %85 %
52Number of Forms   Technology-0.197352 %87 %
53Number of Links   Authority-0.1942215076 %88 %
54Number of Images   Size-0.19763168 %91 %
55Number of HTTPS Links   Authority-0.1941914876 %88 %
56Leading Variations in H1-H6 Tags   Relevancy-0.197235 %89 %
57Variations in ALT Attributes   Relevancy-0.1939736 %87 %
58Number of Internal Links   Authority-0.1938713575 %88 %
59Has Form   Technology-0.191151 %82 %
60Number of DoFollow Links   Authority-0.1940914376 %88 %
61Variations in Meta Description   Relevancy-0.194247 %87 %
62Number of External Links   Authority-0.19421772 %87 %
63Number of Images with ALT Text   Size-0.19512264 %89 %
64Variations in Absolute URLs   Relevancy-0.182414651 %91 %
65Number of Heading Tags   Size-0.18472168 %87 %
66Number of P Tags   Size-0.18813666 %90 %
67Entities in H2 Tags-0.1817543 %90 %
68Leading Variations in H1, H2, and H3 Tags   Relevancy-0.186234 %89 %
69Average Words Per Sentence   Size-0.182293171 %89 %
70Number of CSS Includes   Technology-0.1820969 %88 %
71Variations in Span Tags   Relevancy-0.1829743 %91 %
72Percentage of DoFollow Links   Authority-0.18977675 %91 %
73Variations in H2 Tags   Relevancy-0.189233 %83 %
74Number of H1 Tags   Size-0.183164 %94 %
75Number of HTML Comments   Size-0.183025263 %84 %
76Number of DoFollow External Links   Authority-0.18311471 %90 %
77Variations in Script Tags   Relevancy-0.184087057 %84 %
78Entities in H3 Tags-0.1829737 %94 %
79Variations in OpenGraph Description   Relevancy-0.184141 %83 %
80Number of JavaScript Includes   Technology-0.17331776 %88 %
81Variations in OpenGraph Title   Relevancy-0.172147 %84 %
82Entities in Meta Description Tag   Relevancy-0.177352 %90 %
83Variations in Main Tags   Relevancy-0.173045932 %88 %
84Search Result Domain Length   Size-0.17231680 %88 %
85Search Result Host Length   Size-0.17231680 %88 %
86Number of Images without ALT Text   Size-0.1731952 %90 %
87LSI Words in Meta Description Tag   Relevancy-0.17221159 %90 %
88Exact Matches in the HTML Tag   Relevancy-0.17354822 %80 %
89Leading Variations in Title Tag   Relevancy-0.171127 %81 %
90Percentage of DoFollow Internal Links   Authority-0.17876774 %88 %
91Number of Facebook Pages   Authority-0.176250 %90 %
92Flesch Kincaid Reading Grade Level   Other-0.175195 %89 %
93Search Result URL Length   Size-0.17926698 %76 %
94LSI Words in H2 Tags   Relevancy-0.16511854 %88 %
95Has JSON-LD Schema Markup   Relevancy-0.161146 %80 %
96Variations in Footer Tags   Relevancy-0.1633525 %84 %
97Has Meta Charset   Technology-0.161166 %85 %
98Number of H2 Tags   Size-0.1612658 %82 %
99Number of Nofollow Links   Authority-0.1634928 %81 %
100Has Canonical URL   Authority-0.161165 %84 %
101Number of Referring Domains   Authority-0.1612576443 %61 %
102Has Entities in H2 Tags   Relevancy-0.161144 %85 %
103Number of Sentences   Size-0.1635312578 %84 %
104Number of Prices   Size-0.1629628767 %88 %
105LSI Words in H3 Tags   Relevancy-0.16742449 %88 %
106Variations in I Tags   Relevancy-0.1611320 %89 %
107Number of Questions   Size-0.16641264 %76 %
108Number of H3 Tags   Size-0.1623854 %83 %
109Number of LinkedIn Pages   Authority-0.163126 %78 %
110Leading Variations in H1 Tags   Relevancy-0.161123 %83 %
111Variations in the last 100 words   Relevancy-0.169240 %85 %
112Percentage of DoFollow External Links   Authority-0.15301170 %93 %
113Number of Absolute URLs   Authority-0.1599029278 %79 %
114Entities in H4 Tags-0.158218 %94 %
115Number of Backlinks   Authority-0.1599414385444 %64 %
116Title Length   Size-0.15764777 %84 %
117Has Meta Viewport   Technology-0.151177 %90 %
118Exact Matches in H1-H6 Tags   Relevancy-0.157113 %80 %
119Headings Has Question   Other-0.151131 %77 %
120Search Result Uses HTTPS   Other-0.151180 %88 %
121Number of Questions In Headings   Size-0.157230 %86 %
122Variations in Nav Tags   Relevancy-0.151651735 %88 %
123Number of Do Follow Backlinks   Authority-0.1593514341740 %63 %
124Variations in H3 Tags   Relevancy-0.1516327 %88 %
125Title Word Count   Size-0.1512777 %83 %
126Variations in Meta Twitter Description   Relevancy-0.154122 %77 %
127Percentage of NoFollow Links   Authority-0.1511426 %80 %
128Meta Description Length   Size-0.1521711461 %80 %
129Number Of JSON-LD Types   Relevancy-0.14421148 %81 %
130Page Size Kilobytes   Size-0.1474033179 %79 %
131Has Meta Description   Relevancy-0.141161 %80 %
132Exact Matches in Top 30KB   Relevancy-0.1415113 %74 %
133Has Privacy Policy   Trust-0.141160 %84 %
134Meta Description Tag Has Entities   Relevancy-0.141153 %86 %
135Has Terms of Service   Trust-0.141148 %74 %
136Has Email   Trust-0.141137 %73 %
137Variations Making Whole LI Tags   Relevancy-0.145116 %75 %
138Word Count in Meta Description   Size-0.14381961 %83 %
139Inline CSS Kilobytes   Size-0.141114661 %89 %
140Number of Social Pages   Authority-0.1411455 %84 %
141Number of H4 Tags   Size-0.1412433 %89 %
142Variations in TITLE Attributes   Relevancy-0.1419536 %86 %
143Variations making whole H1, H2, and H3 Tags   Relevancy-0.141111 %85 %
144Variations in Strong Tags   Relevancy-0.1411220 %80 %
145Number of Instagram Pages   Authority-0.148237 %76 %
146Variations making whole H1-H6 Tags   Relevancy-0.141112 %86 %
147Variations in Section Tags   Relevancy-0.14911228 %85 %
148Exact Matches in Sentences   Relevancy-0.1415214 %81 %
149Number of Email Addresses   Trust-0.1414337 %87 %
150Leading Variations in H2 Tags   Relevancy-0.142115 %81 %
151Percentage of NoFollow Internal Links   Authority-0.148318 %81 %
152Number of Questions In H3 Tags   Size-0.144114 %71 %
153Has OpenGraph Image   Relevancy-0.141150 %67 %
154Variations in Meta Twitter Content   Relevancy-0.141125 %75 %
155Has Meta Twitter Card   Authority-0.141144 %63 %
156Has Entities in H3 Tags   Relevancy-0.141139 %85 %
157LSI Words in H4 Tags   Relevancy-0.1429729 %91 %
158Is Article Page   Other-0.141137 %74 %
159Has FavIcon   Technology-0.141169 %83 %
160Variations making whole A Tags   Relevancy-0.145120 %79 %
161Has OpenGraph Type   Relevancy-0.141155 %76 %
162Number of No Follow Backlinks   Authority-0.141558251431 %58 %
163Number of US Phone Numbers   Trust-0.1476724 %83 %
164Exact Matches in Title Tag   Relevancy-0.141111 %71 %
165Uses JSON-LD name-0.141146 %80 %
166Uses Schema collectionpage   Other-0.14115 %41 %
167Uses Schema image   Other-0.141120 %68 %
168Uses JSON-LD CollectionPage   Other-0.14115 %43 %
169Is Purchase Page   Other-0.131153 %75 %
170Has Entities in H4 Tags   Relevancy-0.131119 %84 %
171Uses JSON-LD url   Other-0.131143 %79 %
172Is Store Page   Other-0.131147 %76 %
173Variations in Article Tags   Relevancy-0.13311023 %79 %
174Inline JavaScript Kilobytes   Size-0.1350014275 %76 %
175Has US Phone Number   Trust-0.131123 %73 %
176Has Contact Page   Trust-0.131159 %80 %
177Number of Facebook Accounts   Authority-0.132123 %82 %
178Uses Schema audience   Other-0.13111 %14 %
179Uses Schema name   Other-0.131156 %72 %
180Variations Making Whole Span Tags   Relevancy-0.133114 %79 %
181Is Pagination Page   Other-0.131125 %71 %
182Uses Schema organization   Other-0.131132 %71 %
183Variations in H4-H6 Tags   Relevancy-0.136113 %84 %
184Number of NoFollow External Links   Authority-0.1321419 %79 %
185Uses JSON-LD DiscussionForumPosting   Other-0.13116 %34 %
186Variations in Value Attributes   Relevancy-0.135110 %83 %
187Uses Schema url   Other-0.131152 %71 %
188Has Schema Markup   Relevancy-0.131158 %79 %
189Uses Schema discussionforumposting   Other-0.13116 %35 %
190Uses JSON-LD image   Other-0.121113 %71 %
191Number of Social Accounts   Authority-0.124238 %83 %
192Number of Twitter Accounts   Authority-0.122123 %77 %
193Uses JSON-LD ListItem   Other-0.121129 %69 %
194Variations in ID Attributes   Relevancy-0.12729 %79 %
195Is Category Page   Other-0.121117 %68 %
196Has Google Verify   Technology-0.121120 %71 %
197Search Result Summary Length   Size-0.1216015298 %80 %
198Uses Schema listitem   Other-0.121141 %66 %
199Has Meta Twitter Description   Authority-0.121128 %62 %
200Uses JSON-LD interactionType   Other-0.12116 %39 %