Measures 149336 SEO Factors

147614 Built-In SEO Factors

138442 On-page SEO Factors

9172 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 Variations Used   Diversity-0.2330779 %88 %
2Number of Unique LSI Words Used   Diversity-0.2399731382 %67 %
3Search Result Domain is .com, .net, or .org   Other-0.22115 %73 %
4Search Result Domain is .com   Other-0.22115 %72 %
5Load Time Milliseconds   Performance-0.2222536149784 %91 %
6Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
7Number of Top 50 Shared Factors Used   Diversity-0.21171297 %93 %
8Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
9Entities in Title Tag   Relevancy-0.218364 %93 %
10Number of Distinct Entities Used   Diversity-0.2682673 %94 %
11Variations in H1-H6 Tags   Relevancy-0.2144763 %90 %
12Variations in Div Tags   Relevancy-0.21892012673 %92 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.291662 %90 %
14Variations in Body Tags   Relevancy-0.25618223877 %90 %
15Variations in H1 and H2 Tags   Relevancy-0.246460 %90 %
16Variations in HTML Tags   Relevancy-0.195618223576 %92 %
17Variations in P Tags   Relevancy-0.1915023065 %91 %
18Variations in Sentences   Relevancy-0.1916283670 %91 %
19Number of Factors Used   Diversity-0.1928617598 %90 %
20Variations in LI Tags   Relevancy-0.196022064 %89 %
21Term Frequency   Relevancy-0.196377 %91 %
22Variations in the Title Tag   Relevancy-0.1811263 %86 %
23Number of Referring Domains   Authority-0.1811130552549 %75 %
24Entities in the HTML Tag   Relevancy-0.1886713268 %97 %
25Entities in Sentences   Relevancy-0.1876213065 %97 %
26Entities in H2 Tags-0.1836750 %93 %
27Number of Backlinks   Authority-0.18289337526622449 %76 %
28Variations in Search Result Document File Name   Relevancy-0.184142 %80 %
29Variations in Search Result Display URL   Relevancy-0.189278 %84 %
30Variations in Search Result Link Text   Relevancy-0.189278 %84 %
31Variations in H2 Tags   Relevancy-0.1836347 %89 %
32Entities in H1 Tags-0.188251 %90 %
33Variations in First 100 Words   Relevancy-0.18178764 %86 %
34Variations in A Tags   Relevancy-0.1819412364 %88 %
35Variations in H1 Tags   Relevancy-0.1811151 %84 %
36Word Count   Size-0.1710039144184 %88 %
37Unabridged Word Count   Size-0.1746360187384 %89 %
38Variations in Meta Description   Relevancy-0.1735254 %85 %
39Number of Do Follow Backlinks   Authority-0.17260842855119745 %76 %
40Clean Text Kilobytes   Size-0.172321275 %88 %
41Leading Variations in H1-H6 Tags   Relevancy-0.1729242 %88 %
42Variation Count in Top 30KB   Relevancy-0.1741422365 %87 %
43Variation Density in Top 30KB   Relevancy-0.17290361 %81 %
44Variations in Search Result URL Path   Relevancy-0.174144 %82 %
45Number of No Follow Backlinks   Authority-0.1730777171421338 %71 %
46Number of P Tags   Size-0.1716534074 %88 %
47Clean Keyword Density in the HTML Tag   Relevancy-0.17181470 %82 %
48Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716240 %87 %
49Number of HTML Tags   Size-0.17855299784 %89 %
50Number of Includes   Technology-0.17592780 %82 %
51Variations in A Tag HREF Attributes   Relevancy-0.179374058 %90 %
52Entities in Meta Description Tag   Relevancy-0.1715356 %89 %
53Number of Images   Size-0.173393076 %88 %
54Variations in Distinct A Tag HREF Attributes   Relevancy-0.176102658 %90 %
55Variations in ALT Attributes   Relevancy-0.1691645 %86 %
56Number of Heading Tags   Size-0.161332276 %88 %
57Entities in H3 Tags-0.1629742 %92 %
58Number of Images with ALT Text   Size-0.163322071 %89 %
59Variations in the Canonical URL   Relevancy-0.1635248 %84 %
60Number of Facebook Pages   Authority-0.1619258 %83 %
61Variations in Absolute URLs   Relevancy-0.1650956059 %89 %
62Variations in OpenGraph Title   Relevancy-0.168153 %82 %
63Variations in Span Tags   Relevancy-0.16359950 %89 %
64TF/IDF   Relevancy-0.161156 %86 %
65Number of Sentences   Size-0.1683612582 %86 %
66Number of H2 Tags   Size-0.1624768 %88 %
67Percentage of DoFollow Internal Links   Authority-0.16917279 %86 %
68Variations in Script Tags   Relevancy-0.1612075562 %88 %
69Variations in OpenGraph Description   Relevancy-0.1630249 %83 %
70Number of CSS Includes   Technology-0.16281073 %80 %
71Has JSON-LD Schema Markup   Relevancy-0.161153 %79 %
72Number of Internal Links   Authority-0.1662212079 %85 %
73Number of DoFollow Links   Authority-0.1678213079 %85 %
74Number of Links   Authority-0.1578913379 %85 %
75Number of HTTPS Links   Authority-0.1578813279 %85 %
76Percentage of DoFollow Links   Authority-0.151008280 %89 %
77Variations in Search Result URL   Relevancy-0.154252 %78 %
78Variations in H3 Tags   Relevancy-0.1546335 %86 %
79LSI Words in Title Tag   Relevancy-0.1517559 %95 %
80Variations in Nav Tags   Relevancy-0.1524932645 %86 %
81Variations in Main Tags   Relevancy-0.1552925737 %87 %
82Number of H1 Tags   Size-0.154269 %86 %
83Number of HTML Comments   Size-0.157264772 %86 %
84LSI Words in Sentences   Relevancy-0.15319963357 %95 %
85Number of H3 Tags   Size-0.1551960 %85 %
86Search Result Number of Dirs in Path   Other-0.153272 %75 %
87Leading Variations in H1 Tags   Relevancy-0.152123 %80 %
88Leading Variations in Title Tag   Relevancy-0.151128 %83 %
89Number of Absolute URLs   Authority-0.1595126782 %81 %
90Is Home Page   Other-0.141122 %50 %
91Flesch Kincaid Reading Grade Level   Other-0.147294 %88 %
92Number of Questions   Size-0.142571266 %83 %
93Number of Instagram Pages   Authority-0.1419246 %78 %
94Number of Images without ALT Text   Size-0.142181158 %84 %
95Title Tag Has Entities   Relevancy-0.141164 %87 %
96Number Of JSON-LD Types   Relevancy-0.14721356 %85 %
97Has Entities in H1 Tags   Relevancy-0.141151 %85 %
98Number of External Links   Authority-0.141671475 %84 %
99Meta Description Length   Size-0.1424511767 %81 %
100Number of Questions In Headings   Size-0.1411337 %85 %
101Variations in Footer Tags   Relevancy-0.1424611138 %84 %
102Variations in Section Tags   Relevancy-0.148251736 %86 %
103Number of DoFollow External Links   Authority-0.141621275 %82 %
104Search Result Domain Length   Size-0.14251784 %80 %
105Search Result Host Length   Size-0.14251784 %80 %
106Number of Forms   Technology-0.1411252 %79 %
107Word Count in Meta Description   Size-0.14581967 %81 %
108Number of JavaScript Includes   Technology-0.14501881 %81 %
109Exact Matches in the HTML Tag   Relevancy-0.14288724 %87 %
110Has Meta Description   Relevancy-0.141166 %78 %
111Variations in Strong Tags   Relevancy-0.1450226 %83 %
112LSI Words in H1 Tags   Relevancy-0.1431448 %93 %
113Inline CSS Kilobytes   Size-0.141756365 %83 %
114Has Canonical URL   Authority-0.141171 %81 %
115Leading Variations in H2 Tags   Relevancy-0.1415121 %83 %
116Has Meta Viewport   Technology-0.141181 %83 %
117LSI Words in Meta Description Tag   Relevancy-0.1423949 %93 %
118Has Entities in H2 Tags   Relevancy-0.141150 %86 %
119Title Length   Size-0.141755182 %78 %
120Number of LinkedIn Pages   Authority-0.1414130 %78 %
121Average Words Per Sentence   Size-0.131392978 %80 %
122Number of Social Pages   Authority-0.1321565 %81 %
123Number of US Phone Numbers   Trust-0.1312201640 %77 %
124Uses Microdata latitude   Other-0.13116 %13 %
125Uses Microdata longitude   Other-0.13116 %13 %
126Search Result Uses HTTPS   Other-0.131183 %84 %
127Has Privacy Policy   Trust-0.131155 %73 %
128Has Meta Charset   Technology-0.131173 %81 %
129Number of Facebook Accounts   Authority-0.134128 %78 %
130Variations making whole A Tags   Relevancy-0.1325128 %78 %
131Page Size Kilobytes   Size-0.1381630083 %78 %
132Has Form   Technology-0.131151 %74 %
133LSI Words in H2 Tags   Relevancy-0.131381949 %94 %
134Title Word Count   Size-0.1320882 %77 %
135Has FavIcon   Technology-0.131175 %79 %
136Uses Microdata geo   Other-0.13115 %14 %
137Variations in the last 100 words   Relevancy-0.13183349 %83 %
138Variations making whole H1-H6 Tags   Relevancy-0.1315114 %80 %
139Uses Microdata GeoCoordinates   Other-0.13115 %14 %
140Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %79 %
141Uses Schema geo   Other-0.13115 %15 %
142Uses JSON-LD name   Other-0.131153 %78 %
143Number of Questions In H2 Tags   Size-0.134124 %83 %
144Has US Phone Number   Trust-0.131141 %65 %
145Has Email   Trust-0.131144 %73 %
146Variations Making Whole Span Tags   Relevancy-0.1315119 %84 %
147Percentage of DoFollow External Links   Authority-0.13291174 %77 %
148Meta Description Tag Has Entities   Relevancy-0.131155 %82 %
149Number of Email Addresses   Trust-0.13190544 %81 %
150Has Entities in H3 Tags   Relevancy-0.131143 %86 %
151Number of Prices   Size-0.1323637368 %80 %
152Has OpenGraph Type   Relevancy-0.131162 %73 %
153Uses Microdata addressCountry   Other-0.13114 %17 %
154Headings Has Question   Other-0.131137 %80 %
155Number of Social Accounts   Authority-0.1315243 %79 %
156Inline JavaScript Kilobytes   Size-0.1352711280 %74 %
157Uses Schema name   Other-0.131160 %72 %
158Uses Microdata priceRange   Other-0.13116 %15 %
159Variations in Article Tags   Relevancy-0.132751324 %79 %
160Has Contact Page   Trust-0.131162 %74 %
161Has Schema Markup   Relevancy-0.121163 %76 %
162Variations in Button Tags   Relevancy-0.1233729 %81 %
163Has OpenGraph Image   Relevancy-0.121155 %73 %
164Uses Microdata email   Other-0.12115 %15 %
165Uses Schema telephone   Other-0.121120 %64 %
166Variations in Meta Twitter Content   Relevancy-0.124125 %74 %
167Variations in Meta Twitter Description   Relevancy-0.1215124 %75 %
168Number of Questions In H3 Tags   Size-0.127217 %80 %
169Variations Making Whole LI Tags   Relevancy-0.124123 %79 %
170Uses Schema organization   Other-0.121136 %71 %
171Is Store Page   Other-0.121144 %67 %
172Uses JSON-LD url   Other-0.121145 %76 %
173Variations in TITLE Attributes   Relevancy-0.12138537 %83 %
174Number Of Claimed Brands   Other-0.1225225 %77 %
175Leading Variations in H3 Tags   Relevancy-0.1215116 %79 %
176Variations in I Tags   Relevancy-0.12308423 %80 %
177Is Purchase Page   Other-0.121144 %65 %
178Uses Schema url   Other-0.121156 %69 %
179Number of Twitter Accounts   Authority-0.125123 %71 %
180Uses Schema image   Other-0.121121 %67 %
181Has Terms of Service   Trust-0.121138 %68 %
182Uses JSON-LD dayOfWeek   Other-0.12114 %31 %
183Exact Matches in Top 30KB   Relevancy-0.1217114 %83 %
184Uses JSON-LD Organization   Other-0.121132 %73 %
185Uses JSON-LD addressRegion   Other-0.121118 %63 %
186Number of H4 Tags   Size-0.1299436 %81 %
187Uses Schema addressregion   Other-0.121118 %62 %
188Uses Schema dayofweek   Other-0.12114 %31 %
189Uses Schema faqpage   Other-0.12119 %67 %
190Variations in ID Attributes   Relevancy-0.12354212 %83 %
191Has Meta Twitter Card   Authority-0.121153 %72 %
192Uses JSON-LD FAQPage   Other-0.12119 %68 %
193Uses Schema addresslocality   Other-0.121119 %64 %
194Uses Schema postaladdress   Other-0.121119 %64 %
195LSI Words in H3 Tags   Relevancy-0.121031942 %93 %
196Variations making whole H1 Tags   Relevancy-0.12117 %78 %
197Entities in H4 Tags-0.1215219 %87 %
198Uses Schema question   Other-0.121110 %68 %
199Number of H5 Tags   Size-0.1220217 %75 %
200Uses JSON-LD addressLocality   Other-0.121118 %66 %