Measures 148123 SEO Factors

146401 Built-In SEO Factors

137229 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-0.2430779 %89 %
2Number of Unique LSI Words Used   Diversity-0.2399730381 %68 %
3Search Result Domain is .com, .net, or .org   Other-0.23115 %75 %
4Load Time Milliseconds   Performance-0.2222536150684 %92 %
5Search Result Domain is .com   Other-0.22115 %75 %
6Number of Top 100 Shared Factors Used   Diversity-0.22392998 %94 %
7Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
8Number of Top 50 Shared Factors Used   Diversity-0.21171297 %94 %
9Entities in Title Tag   Relevancy-0.218364 %93 %
10Number of Distinct Entities Used   Diversity-0.21682674 %94 %
11Variations in Div Tags   Relevancy-0.211892013673 %93 %
12Variations in H1-H6 Tags   Relevancy-0.21144762 %91 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.291661 %91 %
14Variations in Body Tags   Relevancy-0.25618225378 %91 %
15Variations in HTML Tags   Relevancy-0.25618225077 %93 %
16Variations in H1 and H2 Tags   Relevancy-0.246459 %91 %
17Variations in P Tags   Relevancy-0.215023165 %93 %
18Variations in Sentences   Relevancy-0.216283770 %92 %
19Term Frequency   Relevancy-0.196377 %91 %
20Variations in LI Tags   Relevancy-0.196022163 %91 %
21Number of Factors Used   Diversity-0.1928517598 %91 %
22Entities in the HTML Tag   Relevancy-0.1986713368 %97 %
23Entities in Sentences   Relevancy-0.1976213064 %97 %
24Variations in the Title Tag   Relevancy-0.1911263 %87 %
25Entities in H2 Tags-0.1836750 %93 %
26Entities in H1 Tags-0.188251 %91 %
27Variations in First 100 Words   Relevancy-0.18178764 %88 %
28Variations in A Tags   Relevancy-0.1819412464 %89 %
29Variations in H2 Tags   Relevancy-0.1836346 %90 %
30Number of Referring Domains   Authority-0.184628729449 %75 %
31Variations in Meta Description   Relevancy-0.1835254 %87 %
32Variations in Search Result Document File Name   Relevancy-0.184141 %81 %
33Variations in Search Result Display URL   Relevancy-0.189279 %84 %
34Variations in Search Result Link Text   Relevancy-0.189279 %84 %
35Word Count   Size-0.1810039145583 %89 %
36Variations in H1 Tags   Relevancy-0.1811151 %85 %
37Number of Backlinks   Authority-0.1863097093400449 %76 %
38Unabridged Word Count   Size-0.1846360191683 %90 %
39Clean Text Kilobytes   Size-0.182321375 %88 %
40Clean Keyword Density in the HTML Tag   Relevancy-0.17181470 %83 %
41Entities in Meta Description Tag   Relevancy-0.1715356 %90 %
42Number of P Tags   Size-0.1716534073 %89 %
43Variation Density in Top 30KB   Relevancy-0.17290360 %83 %
44Leading Variations in H1-H6 Tags   Relevancy-0.1729242 %88 %
45Variation Count in Top 30KB   Relevancy-0.1741422465 %88 %
46Variations in Search Result URL Path   Relevancy-0.174143 %82 %
47Number of HTML Tags   Size-0.178552100784 %90 %
48Variations in A Tag HREF Attributes   Relevancy-0.179374258 %91 %
49Number of Do Follow Backlinks   Authority-0.1726127531925145 %76 %
50Variations in Distinct A Tag HREF Attributes   Relevancy-0.176102858 %91 %
51Number of Images   Size-0.172393175 %89 %
52Number of No Follow Backlinks   Authority-0.1730775371233438 %71 %
53Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716240 %88 %
54Number of Includes   Technology-0.17592780 %83 %
55Variations in ALT Attributes   Relevancy-0.1791745 %88 %
56TF/IDF   Relevancy-0.171156 %88 %
57Number of Images with ALT Text   Size-0.171222170 %89 %
58Variations in Absolute URLs   Relevancy-0.1750956360 %90 %
59Number of Heading Tags   Size-0.171332275 %89 %
60Variations in the Canonical URL   Relevancy-0.1735248 %86 %
61Entities in H3 Tags-0.1727742 %93 %
62Percentage of DoFollow Internal Links   Authority-0.16917278 %88 %
63Variations in OpenGraph Title   Relevancy-0.168153 %83 %
64Variations in OpenGraph Description   Relevancy-0.1630249 %83 %
65Variations in Span Tags   Relevancy-0.16359949 %90 %
66Number of Sentences   Size-0.1683612682 %88 %
67Variations in Script Tags   Relevancy-0.1612075562 %88 %
68Number of H2 Tags   Size-0.1624767 %89 %
69Number of Facebook Pages   Authority-0.166258 %83 %
70Number of Internal Links   Authority-0.1638912278 %86 %
71Number of DoFollow Links   Authority-0.1639613179 %86 %
72Number of Links   Authority-0.1639713579 %86 %
73Number of HTTPS Links   Authority-0.1639613379 %87 %
74Number of CSS Includes   Technology-0.16281073 %81 %
75LSI Words in Title Tag   Relevancy-0.1617559 %95 %
76Percentage of DoFollow Links   Authority-0.161008179 %89 %
77Variations in Nav Tags   Relevancy-0.1624932845 %87 %
78Has JSON-LD Schema Markup   Relevancy-0.151153 %80 %
79Variations in Search Result URL   Relevancy-0.154252 %79 %
80Variations in H3 Tags   Relevancy-0.1546335 %86 %
81Number of H1 Tags   Size-0.154168 %87 %
82Number of HTML Comments   Size-0.155164671 %87 %
83Variations in Main Tags   Relevancy-0.1552926036 %87 %
84LSI Words in Sentences   Relevancy-0.15319963357 %96 %
85Number of H3 Tags   Size-0.1551959 %86 %
86Search Result Number of Dirs in Path   Other-0.153271 %75 %
87Number of Absolute URLs   Authority-0.1595126982 %83 %
88Leading Variations in H1 Tags   Relevancy-0.152124 %80 %
89Leading Variations in Title Tag   Relevancy-0.151128 %84 %
90Flesch Kincaid Reading Grade Level   Other-0.157194 %89 %
91Has Entities in H1 Tags   Relevancy-0.151151 %88 %
92Is Home Page   Other-0.151123 %51 %
93Number Of JSON-LD Types   Relevancy-0.15721455 %86 %
94Title Tag Has Entities   Relevancy-0.151164 %87 %
95Number of Instagram Pages   Authority-0.1519245 %78 %
96Number of Questions   Size-0.152571266 %84 %
97Number of Questions In Headings   Size-0.1511337 %86 %
98Number of JavaScript Includes   Technology-0.14501880 %82 %
99Meta Description Length   Size-0.1424511767 %82 %
100Variations in Footer Tags   Relevancy-0.1424611138 %86 %
101Number of Images without ALT Text   Size-0.142181157 %84 %
102Number of Forms   Technology-0.1411252 %80 %
103Search Result Domain Length   Size-0.14251783 %82 %
104Search Result Host Length   Size-0.14251783 %82 %
105Variations in Strong Tags   Relevancy-0.1450326 %85 %
106Word Count in Meta Description   Size-0.14581967 %82 %
107Number of External Links   Authority-0.14551475 %84 %
108Variations in Section Tags   Relevancy-0.148251736 %86 %
109Uses Microdata latitude   Other-0.14116 %14 %
110Uses Microdata longitude   Other-0.14116 %14 %
111Number of DoFollow External Links   Authority-0.14541274 %82 %
112Has Canonical URL   Authority-0.141170 %82 %
113Inline CSS Kilobytes   Size-0.141756365 %85 %
114Has Meta Description   Relevancy-0.141165 %79 %
115LSI Words in Meta Description Tag   Relevancy-0.1423948 %94 %
116Has Entities in H2 Tags   Relevancy-0.141150 %87 %
117Number of US Phone Numbers   Trust-0.1412201739 %78 %
118Number of Social Pages   Authority-0.1421564 %81 %
119LSI Words in H1 Tags   Relevancy-0.1431448 %94 %
120Uses Microdata GeoCoordinates   Other-0.14116 %15 %
121Has Meta Viewport   Technology-0.141181 %84 %
122Has Privacy Policy   Trust-0.141155 %74 %
123Page Size Kilobytes   Size-0.1481630382 %80 %
124Uses Microdata geo   Other-0.14116 %16 %
125Number of LinkedIn Pages   Authority-0.1414130 %76 %
126Variations making whole A Tags   Relevancy-0.1425128 %80 %
127Title Length   Size-0.141755081 %79 %
128Leading Variations in H2 Tags   Relevancy-0.1415121 %84 %
129Uses Microdata priceRange   Other-0.14116 %16 %
130Average Words Per Sentence   Size-0.141392977 %80 %
131Search Result Uses HTTPS   Other-0.141183 %87 %
132Has Form   Technology-0.141151 %74 %
133Exact Matches in the HTML Tag   Relevancy-0.14252724 %89 %
134LSI Words in H2 Tags   Relevancy-0.141381948 %95 %
135Uses Schema geo   Other-0.14116 %16 %
136Has US Phone Number   Trust-0.141141 %66 %
137Has FavIcon   Technology-0.131174 %80 %
138Has Meta Charset   Technology-0.131173 %82 %
139Number of Facebook Accounts   Authority-0.133127 %78 %
140Title Word Count   Size-0.1320881 %78 %
141Meta Description Tag Has Entities   Relevancy-0.131155 %84 %
142Variations in the last 100 words   Relevancy-0.13183349 %85 %
143Number of Questions In H2 Tags   Size-0.134124 %83 %
144Variations Making Whole Span Tags   Relevancy-0.1315119 %85 %
145Has Email   Trust-0.131143 %74 %
146Uses JSON-LD name   Other-0.131153 %79 %
147Variations making whole H1-H6 Tags   Relevancy-0.1315115 %81 %
148Has Entities in H3 Tags   Relevancy-0.131143 %87 %
149Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %80 %
150Uses Microdata email   Other-0.13116 %16 %
151Number of Prices   Size-0.1323637568 %81 %
152Uses Microdata addressCountry   Other-0.13115 %19 %
153Inline JavaScript Kilobytes   Size-0.1349211579 %75 %
154Number of Email Addresses   Trust-0.13190543 %81 %
155Has OpenGraph Type   Relevancy-0.131161 %75 %
156Headings Has Question   Other-0.131137 %81 %
157Variations in Article Tags   Relevancy-0.132751424 %80 %
158Has OpenGraph Image   Relevancy-0.131154 %75 %
159Uses Schema name   Other-0.131160 %73 %
160Number of Social Accounts   Authority-0.1315242 %79 %
161Variations in Meta Twitter Description   Relevancy-0.1315124 %77 %
162Variations in Button Tags   Relevancy-0.1333739 %81 %
163Percentage of DoFollow External Links   Authority-0.13261173 %76 %
164Variations in Meta Twitter Content   Relevancy-0.134125 %76 %
165Has Schema Markup   Relevancy-0.131163 %77 %
166Uses Schema telephone   Other-0.131120 %66 %
167Has Contact Page   Trust-0.131162 %76 %
168Is Store Page   Other-0.131144 %69 %
169Variations in TITLE Attributes   Relevancy-0.13138537 %83 %
170Variations Making Whole LI Tags   Relevancy-0.134123 %80 %
171Uses Schema organization   Other-0.131136 %73 %
172Uses JSON-LD url   Other-0.131145 %77 %
173Number of Questions In H3 Tags   Size-0.127217 %82 %
174Uses JSON-LD dayOfWeek   Other-0.12115 %33 %
175Uses Schema dayofweek   Other-0.12115 %32 %
176Uses Schema url   Other-0.121156 %70 %
177Number Of Claimed Brands   Other-0.1225225 %78 %
178Uses Microdata LocalBusiness   Other-0.12115 %24 %
179Uses JSON-LD addressRegion   Other-0.121117 %66 %
180Variations in I Tags   Relevancy-0.12308423 %81 %
181Uses Schema addressregion   Other-0.121118 %65 %
182Has Terms of Service   Trust-0.121138 %70 %
183Uses Schema postaladdress   Other-0.121119 %67 %
184Leading Variations in H3 Tags   Relevancy-0.1215116 %80 %
185Is Purchase Page   Other-0.121144 %67 %
186Uses Schema addresslocality   Other-0.121119 %66 %
187Uses JSON-LD addressLocality   Other-0.121118 %68 %
188Uses JSON-LD Organization   Other-0.121132 %75 %
189Uses Schema image   Other-0.121121 %67 %
190LSI Words in H3 Tags   Relevancy-0.121031942 %93 %
191Uses JSON-LD PostalAddress   Other-0.121118 %69 %
192Uses JSON-LD telePhone   Other-0.121115 %70 %
193Uses JSON-LD streetAddress   Other-0.121117 %68 %
194Has Meta Twitter Card   Authority-0.121153 %73 %
195Number of Twitter Accounts   Authority-0.125124 %71 %
196Entities in H4 Tags-0.1215219 %87 %
197Variations making whole H1 Tags   Relevancy-0.12117 %76 %
198Variations in ID Attributes   Relevancy-0.12354212 %82 %
199Number of H4 Tags   Size-0.1299436 %82 %
200Uses JSON-LD FAQPage   Other-0.12119 %69 %