Measures 147975 SEO Factors

146253 Built-In SEO Factors

137084 On-page SEO Factors

9169 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-0.2330780 %87 %
2Number of Unique LSI Words Used   Diversity-0.2299730382 %69 %
3Number of Top 50 Shared Factors Used   Diversity-0.22171297 %94 %
4Load Time Milliseconds   Performance-0.2122536153185 %92 %
5Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
7Search Result Domain is .com, .net, or .org   Other-0.21114 %77 %
8Variations in H1-H6 Tags   Relevancy-0.21144863 %91 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2191762 %91 %
10Entities in Title Tag   Relevancy-0.28364 %94 %
11Search Result Domain is .com   Other-0.2114 %77 %
12Number of Distinct Entities Used   Diversity-0.2682673 %95 %
13Variations in H1 and H2 Tags   Relevancy-0.246460 %91 %
14Variations in Div Tags   Relevancy-0.21892014273 %93 %
15Variations in Body Tags   Relevancy-0.25618226979 %92 %
16Variations in Sentences   Relevancy-0.216284171 %92 %
17Variations in P Tags   Relevancy-0.215023366 %92 %
18Variations in HTML Tags   Relevancy-0.25618226577 %93 %
19Number of Factors Used   Diversity-0.1928517898 %90 %
20Variations in LI Tags   Relevancy-0.195002164 %90 %
21Variations in H2 Tags   Relevancy-0.1936348 %89 %
22Term Frequency   Relevancy-0.196378 %92 %
23Entities in H1 Tags-0.188250 %91 %
24Entities in H2 Tags-0.1836750 %94 %
25Variations in H1 Tags   Relevancy-0.1811152 %83 %
26Uses Microdata OpeningHoursSpecification-0.181110 %12 %
27Variations in the Title Tag   Relevancy-0.1811264 %87 %
28Uses Microdata opens   Other-0.18119 %12 %
29Entities in the HTML Tag   Relevancy-0.1886713767 %97 %
30Variations in First 100 Words   Relevancy-0.18178765 %88 %
31Variations in Search Result Document File Name   Relevancy-0.184143 %82 %
32Entities in Sentences   Relevancy-0.1876213464 %97 %
33Variations in A Tags   Relevancy-0.1819412464 %88 %
34Word Count   Size-0.1810039151784 %90 %
35Unabridged Word Count   Size-0.1846360202084 %90 %
36Variation Count in Top 30KB   Relevancy-0.1841422666 %88 %
37Variations in Meta Description   Relevancy-0.1735255 %86 %
38Number of Referring Domains   Authority-0.174628732247 %77 %
39Number of Includes   Technology-0.17572780 %83 %
40Clean Text Kilobytes   Size-0.172321375 %88 %
41Variation Density in Top 30KB   Relevancy-0.17290362 %82 %
42Variations in Search Result Display URL   Relevancy-0.179278 %83 %
43Variations in Search Result Link Text   Relevancy-0.179278 %83 %
44Variations in Search Result URL Path   Relevancy-0.174145 %81 %
45Leading Variations in H1-H6 Tags   Relevancy-0.1729244 %88 %
46Clean Keyword Density in the HTML Tag   Relevancy-0.17181470 %82 %
47Number of Backlinks   Authority-0.1743240613386048 %78 %
48Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716242 %87 %
49Number of P Tags   Size-0.1716534274 %89 %
50Has JSON-LD Schema Markup   Relevancy-0.171154 %80 %
51Variations in OpenGraph Title   Relevancy-0.178154 %82 %
52Variations in OpenGraph Description   Relevancy-0.1730251 %83 %
53Number of HTML Tags   Size-0.17855299684 %90 %
54Entities in Meta Description Tag   Relevancy-0.1715355 %91 %
55Variations in A Tag HREF Attributes   Relevancy-0.179373859 %90 %
56Variations in ALT Attributes   Relevancy-0.1691746 %88 %
57Variations in the Canonical URL   Relevancy-0.1635249 %84 %
58Number of CSS Includes   Technology-0.16281073 %81 %
59Variations in Distinct A Tag HREF Attributes   Relevancy-0.166102459 %91 %
60Entities in H3 Tags-0.1627742 %94 %
61Number of No Follow Backlinks   Authority-0.1630775371225137 %73 %
62Number of Do Follow Backlinks   Authority-0.1626127532224544 %78 %
63Variations in Script Tags   Relevancy-0.1612076063 %88 %
64Number of Heading Tags   Size-0.161332275 %90 %
65Number of Images   Size-0.162393076 %89 %
66Number of H2 Tags   Size-0.1624768 %89 %
67Number of Sentences   Size-0.1683613382 %88 %
68TF/IDF   Relevancy-0.161158 %87 %
69Number of Facebook Pages   Authority-0.166258 %83 %
70Variations in H3 Tags   Relevancy-0.1646336 %87 %
71Percentage of DoFollow Internal Links   Authority-0.16917279 %88 %
72Variations in Absolute URLs   Relevancy-0.1650956361 %91 %
73Variations in Span Tags   Relevancy-0.16359950 %90 %
74Variations in Main Tags   Relevancy-0.1652926436 %87 %
75Number Of JSON-LD Types   Relevancy-0.16721456 %86 %
76Number of Images with ALT Text   Size-0.161222071 %90 %
77Number of H1 Tags   Size-0.154169 %86 %
78Percentage of DoFollow Links   Authority-0.151008279 %90 %
79Number of Internal Links   Authority-0.1538911679 %87 %
80Number of Links   Authority-0.1539713079 %87 %
81Number of DoFollow Links   Authority-0.1539612779 %87 %
82Variations in Search Result URL   Relevancy-0.154254 %78 %
83LSI Words in Title Tag   Relevancy-0.1517559 %95 %
84Number of HTTPS Links   Authority-0.1539612879 %87 %
85Search Result Number of Dirs in Path   Other-0.153273 %76 %
86Number of H3 Tags   Size-0.1551960 %87 %
87Number of Questions   Size-0.152571367 %84 %
88Variations in Nav Tags   Relevancy-0.1524932746 %87 %
89Number of Questions In Headings   Size-0.1511338 %87 %
90Flesch Kincaid Reading Grade Level   Other-0.157294 %89 %
91Uses Microdata priceRange   Other-0.15117 %17 %
92Has Entities in H1 Tags   Relevancy-0.151151 %89 %
93Uses Microdata latitude   Other-0.15117 %17 %
94Uses Microdata longitude   Other-0.15117 %17 %
95LSI Words in Sentences   Relevancy-0.15319964357 %96 %
96Uses Microdata GeoCoordinates   Other-0.15117 %17 %
97Number of Instagram Pages   Authority-0.1519245 %78 %
98Uses Microdata geo   Other-0.15117 %18 %
99Leading Variations in Title Tag   Relevancy-0.141128 %82 %
100Leading Variations in H1 Tags   Relevancy-0.142124 %80 %
101Uses Schema geo   Other-0.14117 %18 %
102Search Result Domain Length   Size-0.14251784 %80 %
103Search Result Host Length   Size-0.14251784 %80 %
104Number of Absolute URLs   Authority-0.1495126583 %83 %
105Variations in Section Tags   Relevancy-0.148251936 %86 %
106Title Tag Has Entities   Relevancy-0.141163 %88 %
107Number of HTML Comments   Size-0.145164571 %86 %
108Number of LinkedIn Pages   Authority-0.143131 %76 %
109Uses JSON-LD name   Other-0.141154 %79 %
110Meta Description Length   Size-0.1424511868 %82 %
111Has Canonical URL   Authority-0.141171 %82 %
112Variations in Strong Tags   Relevancy-0.1450327 %83 %
113Uses Microdata email   Other-0.14117 %17 %
114LSI Words in H1 Tags   Relevancy-0.1431448 %93 %
115Number of External Links   Authority-0.14551475 %84 %
116Number of JavaScript Includes   Technology-0.14491880 %82 %
117Number of DoFollow External Links   Authority-0.14541374 %83 %
118Number of Questions In H2 Tags   Size-0.144125 %83 %
119Word Count in Meta Description   Size-0.14581967 %82 %
120Uses Microdata addressCountry   Other-0.14116 %20 %
121Leading Variations in H2 Tags   Relevancy-0.1415122 %82 %
122Search Result Uses HTTPS   Other-0.141184 %86 %
123LSI Words in H2 Tags   Relevancy-0.141381949 %94 %
124Has Meta Viewport   Technology-0.141181 %83 %
125Variations in Article Tags   Relevancy-0.142751525 %81 %
126Number of Images without ALT Text   Size-0.142181158 %83 %
127Variations in Footer Tags   Relevancy-0.1424611337 %87 %
128Has Meta Description   Relevancy-0.141166 %79 %
129Has Privacy Policy   Trust-0.141154 %75 %
130Uses Schema name   Other-0.141160 %74 %
131Inline CSS Kilobytes   Size-0.141756365 %84 %
132Has Entities in H2 Tags   Relevancy-0.141150 %88 %
133Is Home Page   Other-0.141119 %51 %
134LSI Words in Meta Description Tag   Relevancy-0.1322949 %93 %
135Number of Forms   Technology-0.1311251 %79 %
136Page Size Kilobytes   Size-0.1381630783 %81 %
137Title Length   Size-0.131755182 %77 %
138Has OpenGraph Image   Relevancy-0.131155 %76 %
139Number of Social Pages   Authority-0.1321564 %81 %
140Has FavIcon   Technology-0.131175 %80 %
141Variations making whole A Tags   Relevancy-0.1325128 %80 %
142Has OpenGraph Type   Relevancy-0.131162 %75 %
143Variations in the last 100 words   Relevancy-0.13183449 %85 %
144Number of Facebook Accounts   Authority-0.133127 %77 %
145Has Schema Markup   Relevancy-0.131164 %77 %
146Exact Matches in the HTML Tag   Relevancy-0.13213826 %89 %
147Headings Has Question   Other-0.131138 %82 %
148Uses JSON-LD url   Other-0.131146 %78 %
149Variations in Meta Twitter Description   Relevancy-0.1315125 %78 %
150Has Meta Charset   Technology-0.131173 %80 %
151Average Words Per Sentence   Size-0.131392877 %80 %
152Percentage of DoFollow External Links   Authority-0.13261173 %75 %
153Uses Schema url   Other-0.131156 %71 %
154Variations Making Whole Span Tags   Relevancy-0.1315119 %84 %
155Inline JavaScript Kilobytes   Size-0.1349212280 %75 %
156Uses Schema organization   Other-0.131137 %73 %
157Title Word Count   Size-0.1320882 %77 %
158Uses Microdata LocalBusiness   Other-0.13115 %25 %
159Variations in Meta Twitter Content   Relevancy-0.134126 %78 %
160Number of Questions In H3 Tags   Size-0.137218 %83 %
161Has Form   Technology-0.131150 %73 %
162Meta Description Tag Has Entities   Relevancy-0.131155 %84 %
163Uses Schema image   Other-0.131123 %66 %
164Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %79 %
165Uses JSON-LD image   Other-0.131117 %70 %
166Leading Variations in H3 Tags   Relevancy-0.1315117 %81 %
167Variations making whole H1-H6 Tags   Relevancy-0.1315115 %80 %
168Has Entities in H3 Tags   Relevancy-0.131143 %88 %
169Uses JSON-LD Organization   Other-0.131133 %75 %
170Variations in Button Tags   Relevancy-0.12337310 %82 %
171Uses Schema faqpage   Other-0.121110 %70 %
172Uses JSON-LD FAQPage   Other-0.12119 %72 %
173Number of Prices   Size-0.1223637868 %81 %
174Has Email   Trust-0.121144 %75 %
175Variations Making Whole LI Tags   Relevancy-0.124123 %80 %
176Uses JSON-LD dayOfWeek   Other-0.12116 %31 %
177Number of Email Addresses   Trust-0.12190544 %81 %
178Is Article Page   Other-0.121145 %67 %
179Uses Schema telephone   Other-0.121121 %65 %
180Number of US Phone Numbers   Trust-0.1212201938 %77 %
181Variations in TITLE Attributes   Relevancy-0.12138537 %83 %
182Uses Schema question   Other-0.121110 %71 %
183Has Terms of Service   Trust-0.121138 %71 %
184Uses Schema dayofweek   Other-0.12116 %31 %
185Uses Schema pricerange   Other-0.121111 %52 %
186Uses Schema answer   Other-0.121110 %71 %
187Has Meta Twitter Card   Authority-0.121154 %74 %
188Uses JSON-LD description   Other-0.121142 %72 %
189Uses Schema text   Other-0.121114 %70 %
190Has Contact Page   Trust-0.121161 %75 %
191LSI Words in H3 Tags   Relevancy-0.121032042 %94 %
192Uses Microdata streetAddress   Other-0.12115 %29 %
193Number of Nofollow Links   Authority-0.1248423 %76 %
194Is Store Page   Other-0.121143 %68 %
195Uses JSON-LD Question   Other-0.12119 %74 %
196Uses JSON-LD text   Other-0.121111 %74 %
197Uses Schema localbusiness   Other-0.121112 %53 %
198Number of Social Accounts   Authority-0.129242 %78 %
199Uses JSON-LD datePublished   Other-0.121136 %70 %
200Number of H4 Tags   Size-0.1299437 %82 %