Measures 147896 SEO Factors

146174 Built-In SEO Factors

137008 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-0.2594831880 %82 %
2Number of Unique Variations Used   Diversity-0.2424778 %87 %
3Entities in Title Tag   Relevancy-0.246369 %95 %
4Number of Distinct Entities Used   Diversity-0.24513078 %99 %
5Entities in the HTML Tag   Relevancy-0.2286717374 %95 %
6Search Result Domain is .com, .net, or .org   Other-0.22115 %77 %
7Entities in Sentences   Relevancy-0.2276216871 %95 %
8Number of Top 100 Shared Factors Used   Diversity-0.22383096 %92 %
9Variations in Sentences   Relevancy-0.221083669 %91 %
10Number of Top 200 Shared Factors Used   Diversity-0.21513996 %91 %
11Search Result Domain is .com   Other-0.21115 %75 %
12Entities in H1 Tags-0.218257 %94 %
13Entities in H2 Tags-0.2136854 %95 %
14Variations in Body Tags   Relevancy-0.2168921677 %88 %
15Number of Top 50 Shared Factors Used   Diversity-0.21161296 %92 %
16Load Time Milliseconds   Performance-0.2122536166682 %93 %
17Variations in H1, H2, and H3 Tags   Relevancy-0.236763 %89 %
18Variations in H1-H6 Tags   Relevancy-0.241863 %88 %
19Variations in P Tags   Relevancy-0.21103064 %89 %
20Number of Factors Used   Diversity-0.227418096 %89 %
21Variations in HTML Tags   Relevancy-0.268921175 %90 %
22Variations in Div Tags   Relevancy-0.239411471 %89 %
23Variations in H1 and H2 Tags   Relevancy-0.227561 %89 %
24Uses Microdata OpeningHoursSpecification-0.21112 %11 %
25Uses Microdata opens   Other-0.21112 %11 %
26Entities in Meta Description Tag   Relevancy-0.1915461 %94 %
27Variations in LI Tags   Relevancy-0.19782265 %84 %
28LSI Words in Title Tag   Relevancy-0.1913667 %92 %
29LSI Words in Sentences   Relevancy-0.19319976766 %95 %
30Unabridged Word Count   Size-0.1946360226281 %88 %
31Variations in Search Result Document File Name   Relevancy-0.193146 %81 %
32Word Count   Size-0.1910039145881 %88 %
33Number of Referring Domains   Authority-0.191929423145 %78 %
34Number of Sentences   Size-0.1937912179 %87 %
35Term Frequency   Relevancy-0.194375 %88 %
36Variations in H2 Tags   Relevancy-0.1923449 %88 %
37Variations in H1 Tags   Relevancy-0.195154 %81 %
38Variations in the Title Tag   Relevancy-0.193264 %84 %
39Number of Backlinks   Authority-0.1911611041501545 %79 %
40Number of P Tags   Size-0.193003872 %89 %
41Clean Text Kilobytes   Size-0.182321473 %88 %
42Variations in Meta Description   Relevancy-0.183258 %82 %
43Variations in Search Result URL Path   Relevancy-0.183148 %78 %
44Entities in H3 Tags-0.1827845 %97 %
45Number of Includes   Technology-0.18492677 %78 %
46LSI Words in H1 Tags   Relevancy-0.1831557 %91 %
47Variations in A Tags   Relevancy-0.18682165 %83 %
48Variation Density in Top 30KB   Relevancy-0.186263 %81 %
49Variations in First 100 Words   Relevancy-0.1818768 %87 %
50Number of Heading Tags   Size-0.18782273 %86 %
51Variations in Script Tags   Relevancy-0.182665662 %87 %
52Number of No Follow Backlinks   Authority-0.18309466391536 %70 %
53Number of Facebook Pages   Authority-0.184254 %77 %
54Number of Do Follow Backlinks   Authority-0.189663451115240 %79 %
55LSI Words in H2 Tags   Relevancy-0.171382556 %94 %
56LSI Words in Meta Description Tag   Relevancy-0.17211157 %92 %
57Clean Keyword Density in the HTML Tag   Relevancy-0.176470 %78 %
58Number of Images   Size-0.171383373 %88 %
59Leading Variations in H1, H2, and H3 Tags   Relevancy-0.175243 %88 %
60Variations in A Tag HREF Attributes   Relevancy-0.171414362 %83 %
61Has Entities in H1 Tags   Relevancy-0.171156 %88 %
62Variation Count in Top 30KB   Relevancy-0.17852267 %82 %
63Variations in Search Result Display URL   Relevancy-0.172280 %82 %
64Variations in Search Result Link Text   Relevancy-0.172280 %82 %
65Variations in Absolute URLs   Relevancy-0.171535663 %87 %
66Percentage of DoFollow Internal Links   Authority-0.17897276 %86 %
67Leading Variations in H1-H6 Tags   Relevancy-0.175245 %89 %
68Number of H2 Tags   Size-0.1724866 %85 %
69Variations in OpenGraph Title   Relevancy-0.172155 %82 %
70Number of HTML Tags   Size-0.173653100982 %89 %
71Variations in ALT Attributes   Relevancy-0.1791848 %89 %
72Variations in Distinct A Tag HREF Attributes   Relevancy-0.17872762 %85 %
73Title Tag Has Entities   Relevancy-0.171169 %87 %
74Number Of JSON-LD Types   Relevancy-0.17721756 %88 %
75Number of H1 Tags   Size-0.174168 %82 %
76Has JSON-LD Schema Markup   Relevancy-0.171153 %79 %
77Leading Variations in H1 Tags   Relevancy-0.171125 %81 %
78Number of Images with ALT Text   Size-0.161072268 %89 %
79Flesch Kincaid Reading Grade Level   Other-0.166192 %84 %
80Variations in the Canonical URL   Relevancy-0.167252 %80 %
81Search Result Domain Length   Size-0.16241781 %78 %
82Search Result Host Length   Size-0.16241781 %78 %
83Number of HTML Comments   Size-0.165164569 %85 %
84Leading Variations in Title Tag   Relevancy-0.161129 %81 %
85Variations in H3 Tags   Relevancy-0.169338 %86 %
86Variations in Span Tags   Relevancy-0.1625851 %89 %
87Percentage of DoFollow Links   Authority-0.16988177 %85 %
88Has Entities in H2 Tags   Relevancy-0.161154 %88 %
89Number of Links   Authority-0.1636013777 %84 %
90Number of HTTPS Links   Authority-0.1635913577 %84 %
91Variations in OpenGraph Description   Relevancy-0.163252 %85 %
92Number of Internal Links   Authority-0.1634012577 %84 %
93Number of DoFollow Links   Authority-0.1632713377 %84 %
94TF/IDF   Relevancy-0.161159 %84 %
95Meta Description Tag Has Entities   Relevancy-0.161159 %82 %
96Number of JavaScript Includes   Technology-0.16381777 %77 %
97Number of Questions   Size-0.16321164 %85 %
98Variations in Main Tags   Relevancy-0.162745534 %84 %
99Uses Microdata GeoCoordinates   Other-0.16117 %20 %
100Uses Microdata latitude   Other-0.16117 %20 %
101Uses Microdata longitude   Other-0.16117 %20 %
102Number of Images without ALT Text   Size-0.15681156 %81 %
103Page Size Kilobytes   Size-0.1577029780 %76 %
104Number of H3 Tags   Size-0.1532958 %88 %
105Variations in Nav Tags   Relevancy-0.151672547 %81 %
106Variations in Search Result URL   Relevancy-0.153257 %74 %
107Number of CSS Includes   Technology-0.15221069 %80 %
108LSI Words in H3 Tags   Relevancy-0.151032449 %92 %
109Meta Description Length   Size-0.1519011766 %80 %
110Has Meta Description   Relevancy-0.151164 %76 %
111Has Meta Viewport   Technology-0.151178 %81 %
112Number of Absolute URLs   Authority-0.1595127180 %83 %
113Variations in Section Tags   Relevancy-0.15661837 %78 %
114Word Count in Meta Description   Size-0.15581965 %79 %
115Uses Microdata geo   Other-0.15116 %24 %
116Search Result Uses HTTPS   Other-0.151181 %82 %
117Has Canonical URL   Authority-0.151168 %80 %
118Has Meta Charset   Technology-0.151171 %78 %
119Search Result Number of Dirs in Path   Other-0.153269 %72 %
120Exact Matches in the HTML Tag   Relevancy-0.152131027 %82 %
121Is Home Page   Other-0.151118 %55 %
122Uses JSON-LD image   Other-0.151119 %73 %
123Uses Schema geo   Other-0.15116 %23 %
124Number of Forms   Technology-0.1511251 %76 %
125Inline JavaScript Kilobytes   Size-0.1537110677 %79 %
126Number of Questions In Headings   Size-0.1511335 %89 %
127Has Form   Technology-0.151150 %73 %
128Uses Microdata addressCountry   Other-0.15116 %21 %
129Uses Microdata email   Other-0.15118 %17 %
130Number of External Links   Authority-0.14461371 %80 %
131Number of DoFollow External Links   Authority-0.14451270 %77 %
132Inline CSS Kilobytes   Size-0.141756165 %80 %
133Variations in the last 100 words   Relevancy-0.1411451 %81 %
134Number of US Phone Numbers   Trust-0.14861249 %76 %
135Uses JSON-LD name   Other-0.141153 %82 %
136Number of Social Pages   Authority-0.1413461 %82 %
137Has FavIcon   Technology-0.141172 %80 %
138Leading Variations in H2 Tags   Relevancy-0.142123 %82 %
139Average Words Per Sentence   Size-0.141392875 %76 %
140Has Privacy Policy   Trust-0.141154 %77 %
141Uses JSON-LD url   Other-0.141146 %81 %
142Number of Questions In H2 Tags   Size-0.144125 %82 %
143Variations in Footer Tags   Relevancy-0.1450841 %81 %
144Has OpenGraph Type   Relevancy-0.141158 %75 %
145Uses Schema localbusiness   Other-0.141114 %59 %
146Number of Instagram Pages   Authority-0.1410241 %77 %
147Has US Phone Number   Trust-0.141151 %65 %
148Uses Microdata priceRange   Other-0.14118 %21 %
149Number of Facebook Accounts   Authority-0.142126 %77 %
150Variations in Strong Tags   Relevancy-0.1414327 %84 %
151Has Entities in H3 Tags   Relevancy-0.141146 %92 %
152Uses Schema name   Other-0.141158 %73 %
153Has Schema Markup   Relevancy-0.141162 %77 %
154Title Length   Size-0.141005079 %77 %
155Uses Schema pricerange   Other-0.141114 %56 %
156Variations making whole H1, H2, and H3 Tags   Relevancy-0.141115 %80 %
157Title Word Count   Size-0.1417879 %75 %
158Uses JSON-LD LocalBusiness   Other-0.141113 %63 %
159Uses Schema image   Other-0.141123 %68 %
160Variations in I Tags   Relevancy-0.1414425 %80 %
161Variations making whole H1-H6 Tags   Relevancy-0.141116 %78 %
162Number of Prices   Size-0.1319639366 %79 %
163Uses Schema url   Other-0.131155 %74 %
164Uses Schema faqpage   Other-0.131110 %73 %
165Number of Email Addresses   Trust-0.1355442 %75 %
166Variations in Meta Twitter Description   Relevancy-0.133126 %74 %
167Uses Microdata LocalBusiness   Other-0.13116 %25 %
168Has Contact Page   Trust-0.131162 %74 %
169Variations Making Whole Span Tags   Relevancy-0.133121 %81 %
170Uses Schema postaladdress   Other-0.131124 %65 %
171Variations making whole H1 Tags   Relevancy-0.13118 %75 %
172Has OpenGraph Image   Relevancy-0.131151 %77 %
173Uses JSON-LD priceRange   Other-0.131112 %59 %
174Number of Questions In H3 Tags   Size-0.137216 %83 %
175Uses JSON-LD OpeningHoursSpecification   Other-0.131111 %56 %
176Uses JSON-LD FAQPage   Other-0.131110 %74 %
177Uses JSON-LD opens   Other-0.131110 %56 %
178Number of Social Accounts   Authority-0.134241 %79 %
179Uses JSON-LD addressLocality   Other-0.131123 %67 %
180Number of LinkedIn Pages   Authority-0.133128 %81 %
181Uses JSON-LD dayOfWeek   Other-0.13115 %40 %
182Variations in OpenGraph Site Name   Relevancy-0.131121 %70 %
183Uses JSON-LD addressRegion   Other-0.131122 %68 %
184Headings Has Question   Other-0.131136 %81 %
185Uses Schema openinghoursspecification   Other-0.131111 %56 %
186Uses Schema opens   Other-0.131111 %56 %
187Exact Matches in Top 30KB   Relevancy-0.1311117 %77 %
188Variations making whole A Tags   Relevancy-0.136231 %78 %
189Has Email   Trust-0.131143 %72 %
190Entities in H4 Tags-0.139220 %88 %
191Has Terms of Service   Trust-0.131138 %74 %
192Percentage of DoFollow External Links   Authority-0.13261069 %78 %
193Uses JSON-LD PostalAddress   Other-0.131123 %69 %
194Uses Schema organization   Other-0.131136 %77 %
195Uses Schema addressregion   Other-0.131122 %66 %
196Uses Schema addresslocality   Other-0.131124 %64 %
197Number Of Claimed Brands   Other-0.1319325 %77 %
198Uses Schema question   Other-0.131111 %75 %
199Has Meta Twitter Card   Authority-0.131153 %73 %
200Variations in Meta Twitter Content   Relevancy-0.132127 %74 %