Measures 146531 SEO Factors

144809 Built-In SEO Factors

135692 On-page SEO Factors

9117 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-0.2496530480 %78 %
2Number of Top 200 Shared Factors Used   Diversity-0.23523798 %93 %
3Number of Top 100 Shared Factors Used   Diversity-0.23392898 %93 %
4Number of Unique Variations Used   Diversity-0.2229776 %89 %
5Entities in Title Tag   Relevancy-0.227364 %94 %
6Number of Distinct Entities Used   Diversity-0.22652775 %94 %
7Number of Top 50 Shared Factors Used   Diversity-0.22161298 %93 %
8Load Time Milliseconds   Performance-0.2232075161882 %91 %
9Search Result Domain is .com, .net, or .org   Other-0.21115 %75 %
10Entities in Sentences   Relevancy-0.2166913766 %95 %
11Entities in the HTML Tag   Relevancy-0.2174614070 %96 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.2120660 %87 %
13Variations in Div Tags   Relevancy-0.2162510071 %93 %
14Variations in H1-H6 Tags   Relevancy-0.2122760 %89 %
15Search Result Domain is .com   Other-0.21115 %74 %
16Variations in H1 and H2 Tags   Relevancy-0.211457 %87 %
17Variations in Search Result Document File Name   Relevancy-0.23140 %82 %
18Variations in Body Tags   Relevancy-0.2179920975 %91 %
19Variations in HTML Tags   Relevancy-0.2179920775 %92 %
20Variations in P Tags   Relevancy-0.21312762 %90 %
21Number of Factors Used   Diversity-0.233917298 %87 %
22Variations in Search Result URL Path   Relevancy-0.23142 %83 %
23Entities in H1 Tags-0.196251 %89 %
24Variations in Sentences   Relevancy-0.191652868 %89 %
25Variation Count in Top 30KB   Relevancy-0.19751661 %86 %
26Number of Referring Domains   Authority-0.19170810250 %64 %
27Variations in LI Tags   Relevancy-0.191721961 %91 %
28Term Frequency   Relevancy-0.194374 %88 %
29Variations in A Tags   Relevancy-0.191402161 %88 %
30Variations in the Title Tag   Relevancy-0.193261 %86 %
31Clean Keyword Density in the HTML Tag   Relevancy-0.197365 %80 %
32Number of Includes   Technology-0.19552677 %82 %
33Variations in the Canonical URL   Relevancy-0.197144 %87 %
34Unabridged Word Count   Size-0.194437182282 %90 %
35Leading Variations in H1-H6 Tags   Relevancy-0.197242 %88 %
36Clean Text Kilobytes   Size-0.19311273 %89 %
37Word Count   Size-0.193797142082 %89 %
38Entities in H2 Tags-0.1929747 %90 %
39Variations in Search Result Link Text   Relevancy-0.193278 %84 %
40Variations in Search Result Display URL   Relevancy-0.193278 %84 %
41Number of Images   Size-0.191563373 %89 %
42Number of HTML Tags   Size-0.193693109882 %89 %
43Variations in First 100 Words   Relevancy-0.1817560 %86 %
44Leading Variations in H1, H2, and H3 Tags   Relevancy-0.186240 %88 %
45Number of Backlinks   Authority-0.18124727599850 %66 %
46Variations in H1 Tags   Relevancy-0.183150 %86 %
47LSI Words in Sentences   Relevancy-0.18316971160 %94 %
48Number of Images with ALT Text   Size-0.181102369 %88 %
49Variations in H2 Tags   Relevancy-0.1811341 %84 %
50Number of Heading Tags   Size-0.18672272 %85 %
51Variations in A Tag HREF Attributes   Relevancy-0.183233655 %91 %
52Number of P Tags   Size-0.181353872 %88 %
53Number of Do Follow Backlinks   Authority-0.18122239526845 %65 %
54Variation Density in Top 30KB   Relevancy-0.187256 %82 %
55Variations in Distinct A Tag HREF Attributes   Relevancy-0.182442255 %91 %
56Variations in Search Result URL   Relevancy-0.184152 %79 %
57Variations in Meta Description   Relevancy-0.174250 %84 %
58Number of CSS Includes   Technology-0.1722970 %79 %
59TF/IDF   Relevancy-0.171153 %86 %
60Number of HTTPS Links   Authority-0.1741915078 %87 %
61Search Result Number of Dirs in Path   Other-0.173271 %78 %
62Has Entities in H1 Tags   Relevancy-0.171151 %87 %
63Number of Forms   Technology-0.1719353 %83 %
64Variations in ALT Attributes   Relevancy-0.1755841 %85 %
65Number of Links   Authority-0.1742215178 %86 %
66Entities in H3 Tags-0.1734741 %92 %
67Variations in Absolute URLs   Relevancy-0.173104657 %90 %
68Number of Internal Links   Authority-0.1738913678 %88 %
69Number of DoFollow Links   Authority-0.1740914678 %87 %
70Title Tag Has Entities   Relevancy-0.171163 %87 %
71Entities in Meta Description Tag   Relevancy-0.178354 %89 %
72Variations in Main Tags   Relevancy-0.174845735 %87 %
73Has Form   Technology-0.171152 %78 %
74Variations in Span Tags   Relevancy-0.1735847 %89 %
75Variations in OpenGraph Title   Relevancy-0.173150 %80 %
76Number of H1 Tags   Size-0.1711267 %87 %
77Variations in OpenGraph Description   Relevancy-0.174245 %82 %
78Number of Facebook Pages   Authority-0.176254 %82 %
79Has JSON-LD Schema Markup   Relevancy-0.171150 %78 %
80Percentage of DoFollow Internal Links   Authority-0.16897077 %84 %
81Number of No Follow Backlinks   Authority-0.161967363838 %63 %
82Number of HTML Comments   Size-0.165816068 %82 %
83Leading Variations in Title Tag   Relevancy-0.161130 %81 %
84Leading Variations in H1 Tags   Relevancy-0.161126 %81 %
85Percentage of DoFollow Links   Authority-0.16988078 %86 %
86Average Words Per Sentence   Size-0.162293275 %82 %
87Variations in Script Tags   Relevancy-0.168536859 %83 %
88Exact Matches in the HTML Tag   Relevancy-0.168261525 %82 %
89Number of External Links   Authority-0.16551575 %85 %
90Number of Images without ALT Text   Size-0.16601055 %87 %
91Number of H2 Tags   Size-0.1616764 %86 %
92Has Meta Charset   Technology-0.161171 %83 %
93Number of Sentences   Size-0.1658812680 %82 %
94LSI Words in Title Tag   Relevancy-0.1616562 %93 %
95Number of JavaScript Includes   Technology-0.16441779 %83 %
96Number of DoFollow External Links   Authority-0.16531373 %85 %
97Has Entities in H2 Tags   Relevancy-0.161148 %85 %
98Search Result Host Length   Size-0.16251681 %80 %
99Search Result Domain Length   Size-0.16251681 %80 %
100LSI Words in H1 Tags   Relevancy-0.1617452 %93 %
101Variations in Nav Tags   Relevancy-0.151652041 %84 %
102Number of H3 Tags   Size-0.1531958 %84 %
103Variations in H3 Tags   Relevancy-0.1516332 %84 %
104Flesch Kincaid Reading Grade Level   Other-0.156194 %86 %
105Variations in Footer Tags   Relevancy-0.1557631 %84 %
106Has Canonical URL   Authority-0.151169 %79 %
107Inline CSS Kilobytes   Size-0.151915663 %84 %
108Leading Variations in H2 Tags   Relevancy-0.153120 %82 %
109Number of Questions   Size-0.15811165 %77 %
110LSI Words in H2 Tags   Relevancy-0.15781849 %90 %
111Variations in Section Tags   Relevancy-0.15911433 %84 %
112Number of Prices   Size-0.1529628068 %81 %
113Number of Absolute URLs   Authority-0.1599028581 %81 %
114Number Of JSON-LD Types   Relevancy-0.151181454 %83 %
115Number of Questions In Headings   Size-0.158234 %82 %
116Page Size Kilobytes   Size-0.15110532081 %78 %
117Exact Matches in H1-H6 Tags   Relevancy-0.1511115 %83 %
118Search Result URL Length   Size-0.14926398 %64 %
119LSI Words in Meta Description Tag   Relevancy-0.14351050 %91 %
120Entities in H4 Tags-0.149220 %90 %
121Has Meta Viewport   Technology-0.141179 %81 %
122Uses JSON-LD name   Other-0.141150 %77 %
123Variations making whole H1-H6 Tags   Relevancy-0.142115 %82 %
124Search Result Uses HTTPS   Other-0.141182 %84 %
125Variations in the last 100 words   Relevancy-0.149342 %80 %
126Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %82 %
127Number of Nofollow Links   Authority-0.1444626 %80 %
128Number of Instagram Pages   Authority-0.1412242 %78 %
129Has Entities in H3 Tags   Relevancy-0.141141 %84 %
130Percentage of DoFollow External Links   Authority-0.14301072 %79 %
131Number of Social Pages   Authority-0.1414460 %81 %
132Variations Making Whole LI Tags   Relevancy-0.145122 %80 %
133Meta Description Length   Size-0.1421711565 %78 %
134Word Count in Meta Description   Size-0.14381964 %78 %
135Headings Has Question   Other-0.141134 %77 %
136LSI Words in H3 Tags   Relevancy-0.141242143 %90 %
137Has Email   Trust-0.141141 %70 %
138Has Meta Description   Relevancy-0.141164 %74 %
139Variations in I Tags   Relevancy-0.1417321 %83 %
140Variations making whole A Tags   Relevancy-0.146126 %79 %
141Variations in Meta Twitter Description   Relevancy-0.144123 %76 %
142Variations in Meta Twitter Content   Relevancy-0.142124 %72 %
143Number of LinkedIn Pages   Authority-0.143127 %76 %
144Is Store Page   Other-0.141146 %73 %
145Number of Email Addresses   Trust-0.14280540 %80 %
146Uses JSON-LD url   Other-0.141145 %77 %
147Number of US Phone Numbers   Trust-0.146011238 %82 %
148Has Meta Twitter Card   Authority-0.131149 %66 %
149Title Word Count   Size-0.1318879 %77 %
150Is Home Page   Other-0.131119 %39 %
151Has OpenGraph Type   Relevancy-0.131158 %73 %
152Title Length   Size-0.131224979 %77 %
153Has FavIcon   Technology-0.131172 %77 %
154Variations in Strong Tags   Relevancy-0.1315223 %79 %
155Number of Questions In H3 Tags   Size-0.134116 %76 %
156Number of Facebook Accounts   Authority-0.132126 %79 %
157Is Purchase Page   Other-0.131148 %66 %
158Has Schema Markup   Relevancy-0.131162 %75 %
159Inline JavaScript Kilobytes   Size-0.1358712378 %73 %
160Uses Schema name   Other-0.131158 %71 %
161Has OpenGraph Image   Relevancy-0.131151 %68 %
162Uses JSON-LD CollectionPage   Other-0.13115 %37 %
163Uses Schema collectionpage   Other-0.13115 %37 %
164Meta Description Tag Has Entities   Relevancy-0.131154 %83 %
165Number of H4 Tags   Size-0.1320435 %84 %
166Percentage of NoFollow Links   Authority-0.1311324 %75 %
167Has Privacy Policy   Trust-0.131156 %74 %
168Has US Phone Number   Trust-0.131138 %72 %
169Exact Matches in Top 30KB   Relevancy-0.1324214 %78 %
170Uses JSON-LD ListItem   Other-0.131132 %71 %
171Variations in TITLE Attributes   Relevancy-0.1387535 %80 %
172Uses Schema url   Other-0.131154 %70 %
173Uses Schema organization   Other-0.131133 %69 %
174Variations Making Whole Span Tags   Relevancy-0.135118 %81 %
175Has Terms of Service   Trust-0.131140 %67 %
176Has Contact Page   Trust-0.131159 %72 %
177Variations making whole H1 Tags   Relevancy-0.13119 %79 %
178Uses Schema image   Other-0.131121 %71 %
179Number of NoFollow External Links   Authority-0.1321317 %77 %
180Has Meta Twitter Description   Authority-0.121129 %60 %
181Exact Matches in Sentences   Relevancy-0.1242216 %82 %
182Is Pagination Page   Other-0.121120 %66 %
183Variations in Button Tags   Relevancy-0.123829 %82 %
184Uses JSON-LD image   Other-0.121116 %70 %
185Number of Questions In H2 Tags   Size-0.124121 %75 %
186Uses Schema listitem   Other-0.121141 %67 %
187Percentage of NoFollow Internal Links   Authority-0.129215 %73 %
188Leading Variations in H3 Tags   Relevancy-0.125114 %79 %
189Uses JSON-LD description   Other-0.121137 %69 %
190Is Article Page   Other-0.121139 %68 %
191Uses Schema itemlist   Other-0.12114 %49 %
192Uses JSON-LD Organization   Other-0.121129 %71 %
193Uses JSON-LD ItemList   Other-0.12114 %49 %
194Variations in ID Attributes   Relevancy-0.1210211 %82 %
195Uses JSON-LD BreadcrumbList   Other-0.121132 %69 %
196Exact Matches in Title Tag   Relevancy-0.122114 %78 %
197Has Meta Twitter Title   Authority-0.121130 %60 %
198Number of Social Accounts   Authority-0.124240 %78 %
199Has Google Verify   Technology-0.121122 %68 %
200Has Entities in H4 Tags   Relevancy-0.121120 %82 %