Measures 148904 SEO Factors

147182 Built-In SEO Factors

138010 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-0.2430778 %89 %
2Number of Unique LSI Words Used   Diversity-0.2399730281 %67 %
3Search Result Domain is .com, .net, or .org   Other-0.23115 %75 %
4Search Result Domain is .com   Other-0.22115 %75 %
5Load Time Milliseconds   Performance-0.2222536150384 %92 %
6Number of Top 100 Shared Factors Used   Diversity-0.22392898 %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-0.21682673 %94 %
11Variations in Div Tags   Relevancy-0.21892013072 %93 %
12Variations in H1-H6 Tags   Relevancy-0.2144761 %91 %
13Variations in Body Tags   Relevancy-0.25618224577 %91 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.291661 %91 %
15Variations in HTML Tags   Relevancy-0.25618224176 %93 %
16Variations in H1 and H2 Tags   Relevancy-0.246458 %91 %
17Variations in P Tags   Relevancy-0.215023064 %92 %
18Variations in Sentences   Relevancy-0.1916283669 %92 %
19Term Frequency   Relevancy-0.196376 %91 %
20Variations in LI Tags   Relevancy-0.196022063 %90 %
21Number of Factors Used   Diversity-0.1928617498 %90 %
22Entities in the HTML Tag   Relevancy-0.1986713168 %97 %
23Variations in the Title Tag   Relevancy-0.1811262 %87 %
24Entities in Sentences   Relevancy-0.1876212964 %97 %
25Entities in H2 Tags-0.1836750 %94 %
26Entities in H1 Tags-0.188250 %91 %
27Variations in H2 Tags   Relevancy-0.1836345 %90 %
28Variations in A Tags   Relevancy-0.1819412363 %89 %
29Number of Referring Domains   Authority-0.184628727749 %74 %
30Variations in First 100 Words   Relevancy-0.18178763 %87 %
31Variations in Search Result Document File Name   Relevancy-0.184141 %81 %
32Variations in Search Result Display URL   Relevancy-0.189278 %84 %
33Variations in Search Result Link Text   Relevancy-0.189278 %84 %
34Variations in Meta Description   Relevancy-0.1835254 %86 %
35Variations in H1 Tags   Relevancy-0.1811150 %84 %
36Number of Backlinks   Authority-0.1863097093158549 %76 %
37Word Count   Size-0.1810039144383 %88 %
38Unabridged Word Count   Size-0.1846360189183 %89 %
39Clean Keyword Density in the HTML Tag   Relevancy-0.17181469 %83 %
40Clean Text Kilobytes   Size-0.172321275 %88 %
41Variation Density in Top 30KB   Relevancy-0.17290360 %82 %
42Leading Variations in H1-H6 Tags   Relevancy-0.1729242 %88 %
43Variation Count in Top 30KB   Relevancy-0.1741422364 %88 %
44Number of P Tags   Size-0.1716534073 %89 %
45Entities in Meta Description Tag   Relevancy-0.1715355 %90 %
46Number of HTML Tags   Size-0.178552100384 %90 %
47Variations in Search Result URL Path   Relevancy-0.174142 %82 %
48Number of Do Follow Backlinks   Authority-0.1726127531803645 %76 %
49Number of No Follow Backlinks   Authority-0.1730775371138738 %70 %
50Number of Images   Size-0.172393075 %88 %
51Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716240 %87 %
52Variations in A Tag HREF Attributes   Relevancy-0.179374157 %90 %
53Variations in Distinct A Tag HREF Attributes   Relevancy-0.176102757 %91 %
54Number of Includes   Technology-0.17592780 %83 %
55Variations in ALT Attributes   Relevancy-0.1791644 %87 %
56Number of Images with ALT Text   Size-0.161222170 %89 %
57Entities in H3 Tags-0.1627742 %93 %
58Variations in OpenGraph Title   Relevancy-0.168152 %83 %
59Percentage of DoFollow Internal Links   Authority-0.16917178 %87 %
60Number of Heading Tags   Size-0.161332175 %89 %
61Variations in Absolute URLs   Relevancy-0.1650956159 %90 %
62TF/IDF   Relevancy-0.161156 %87 %
63Variations in the Canonical URL   Relevancy-0.1635247 %85 %
64Variations in OpenGraph Description   Relevancy-0.1630249 %84 %
65Variations in Span Tags   Relevancy-0.16359949 %90 %
66Variations in Script Tags   Relevancy-0.1612075461 %88 %
67Number of Sentences   Size-0.1683612582 %87 %
68Number of H2 Tags   Size-0.1624767 %88 %
69Number of Facebook Pages   Authority-0.167258 %83 %
70Number of Internal Links   Authority-0.1638912178 %85 %
71Number of DoFollow Links   Authority-0.1639613179 %85 %
72Number of Links   Authority-0.1639713479 %86 %
73Number of HTTPS Links   Authority-0.1639613379 %86 %
74Number of CSS Includes   Technology-0.16281073 %81 %
75LSI Words in Title Tag   Relevancy-0.1617558 %95 %
76Percentage of DoFollow Links   Authority-0.161008179 %89 %
77Has JSON-LD Schema Markup   Relevancy-0.151153 %79 %
78Variations in Nav Tags   Relevancy-0.1524932745 %87 %
79Number of H1 Tags   Size-0.154168 %87 %
80Variations in H3 Tags   Relevancy-0.1546334 %86 %
81Variations in Main Tags   Relevancy-0.1552925836 %87 %
82Variations in Search Result URL   Relevancy-0.154251 %78 %
83Number of HTML Comments   Size-0.155164671 %87 %
84LSI Words in Sentences   Relevancy-0.15319962456 %96 %
85Number of H3 Tags   Size-0.1551959 %85 %
86Number of Absolute URLs   Authority-0.1595126782 %82 %
87Search Result Number of Dirs in Path   Other-0.153271 %75 %
88Leading Variations in H1 Tags   Relevancy-0.152123 %80 %
89Leading Variations in Title Tag   Relevancy-0.151127 %84 %
90Is Home Page   Other-0.151122 %51 %
91Title Tag Has Entities   Relevancy-0.151164 %87 %
92Flesch Kincaid Reading Grade Level   Other-0.157194 %89 %
93Has Entities in H1 Tags   Relevancy-0.151151 %87 %
94Number Of JSON-LD Types   Relevancy-0.15721455 %87 %
95Number of Instagram Pages   Authority-0.1419245 %77 %
96Number of Forms   Technology-0.1411251 %79 %
97Number of Questions   Size-0.142571265 %83 %
98Meta Description Length   Size-0.1424511767 %81 %
99Variations in Footer Tags   Relevancy-0.1424611137 %86 %
100Number of Questions In Headings   Size-0.1411336 %86 %
101Number of JavaScript Includes   Technology-0.14501880 %82 %
102Number of Images without ALT Text   Size-0.142181157 %84 %
103Variations in Section Tags   Relevancy-0.148251635 %87 %
104Search Result Domain Length   Size-0.14251783 %82 %
105Search Result Host Length   Size-0.14251783 %82 %
106Variations in Strong Tags   Relevancy-0.1450225 %84 %
107Word Count in Meta Description   Size-0.14581966 %81 %
108Number of External Links   Authority-0.14551475 %83 %
109Number of DoFollow External Links   Authority-0.14541274 %82 %
110Inline CSS Kilobytes   Size-0.141756365 %85 %
111Uses Microdata latitude   Other-0.14116 %14 %
112Uses Microdata longitude   Other-0.14116 %14 %
113Has Meta Description   Relevancy-0.141165 %78 %
114Has Canonical URL   Authority-0.141170 %81 %
115Has Entities in H2 Tags   Relevancy-0.141150 %87 %
116Number of US Phone Numbers   Trust-0.1412201739 %78 %
117LSI Words in Meta Description Tag   Relevancy-0.1423948 %94 %
118LSI Words in H1 Tags   Relevancy-0.1431447 %94 %
119Number of Social Pages   Authority-0.1421564 %81 %
120Title Length   Size-0.141755181 %79 %
121Has Meta Viewport   Technology-0.141181 %84 %
122Page Size Kilobytes   Size-0.1481630282 %80 %
123Uses Microdata GeoCoordinates   Other-0.14116 %15 %
124Uses Microdata geo   Other-0.14116 %15 %
125Leading Variations in H2 Tags   Relevancy-0.1415120 %83 %
126Has Privacy Policy   Trust-0.141155 %73 %
127Exact Matches in the HTML Tag   Relevancy-0.14288723 %88 %
128Average Words Per Sentence   Size-0.141392977 %80 %
129Search Result Uses HTTPS   Other-0.141183 %86 %
130Has Form   Technology-0.141151 %74 %
131Variations making whole A Tags   Relevancy-0.1425128 %80 %
132Number of LinkedIn Pages   Authority-0.1414130 %76 %
133Title Word Count   Size-0.1320881 %78 %
134LSI Words in H2 Tags   Relevancy-0.131381848 %95 %
135Has Meta Charset   Technology-0.131173 %81 %
136Has FavIcon   Technology-0.131174 %80 %
137Uses Schema geo   Other-0.13116 %16 %
138Has US Phone Number   Trust-0.131141 %66 %
139Number of Facebook Accounts   Authority-0.134127 %78 %
140Variations in the last 100 words   Relevancy-0.13183348 %85 %
141Uses Microdata priceRange   Other-0.13116 %15 %
142Number of Questions In H2 Tags   Size-0.134124 %83 %
143Uses JSON-LD name   Other-0.131153 %79 %
144Uses Microdata addressCountry   Other-0.13115 %18 %
145Meta Description Tag Has Entities   Relevancy-0.131155 %83 %
146Inline JavaScript Kilobytes   Size-0.1352711579 %75 %
147Variations making whole H1-H6 Tags   Relevancy-0.1315114 %81 %
148Has Entities in H3 Tags   Relevancy-0.131142 %86 %
149Has Email   Trust-0.131143 %74 %
150Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %80 %
151Variations Making Whole Span Tags   Relevancy-0.1315118 %86 %
152Number of Prices   Size-0.1323637567 %81 %
153Has OpenGraph Type   Relevancy-0.131161 %75 %
154Number of Email Addresses   Trust-0.13190543 %81 %
155Uses Microdata email   Other-0.13116 %15 %
156Headings Has Question   Other-0.131136 %81 %
157Number of Social Accounts   Authority-0.1315242 %78 %
158Uses Schema name   Other-0.131159 %73 %
159Variations in Article Tags   Relevancy-0.132751424 %80 %
160Has OpenGraph Image   Relevancy-0.131154 %74 %
161Percentage of DoFollow External Links   Authority-0.13261173 %76 %
162Variations in Meta Twitter Description   Relevancy-0.1315123 %76 %
163Variations in Meta Twitter Content   Relevancy-0.134125 %76 %
164Has Schema Markup   Relevancy-0.131163 %77 %
165Variations in Button Tags   Relevancy-0.1333729 %81 %
166Uses Schema telephone   Other-0.131120 %66 %
167Has Contact Page   Trust-0.131162 %75 %
168Is Store Page   Other-0.131144 %68 %
169Uses JSON-LD url   Other-0.131145 %77 %
170Variations Making Whole LI Tags   Relevancy-0.124122 %81 %
171Variations in TITLE Attributes   Relevancy-0.12138537 %84 %
172Uses Schema organization   Other-0.121136 %72 %
173Number of Questions In H3 Tags   Size-0.127217 %81 %
174Uses JSON-LD dayOfWeek   Other-0.12114 %31 %
175Uses Schema dayofweek   Other-0.12114 %31 %
176Number Of Claimed Brands   Other-0.1225225 %78 %
177Uses Schema url   Other-0.121156 %70 %
178Variations in I Tags   Relevancy-0.12308423 %81 %
179Uses JSON-LD addressRegion   Other-0.121117 %65 %
180Leading Variations in H3 Tags   Relevancy-0.1215115 %80 %
181Has Terms of Service   Trust-0.121138 %68 %
182Uses JSON-LD Organization   Other-0.121132 %74 %
183Uses Schema addressregion   Other-0.121118 %64 %
184Is Purchase Page   Other-0.121144 %66 %
185Uses Schema image   Other-0.121121 %67 %
186Has Meta Twitter Card   Authority-0.121153 %73 %
187Uses Schema addresslocality   Other-0.121119 %66 %
188Uses Schema postaladdress   Other-0.121119 %66 %
189Uses Microdata LocalBusiness   Other-0.12115 %25 %
190Uses JSON-LD telePhone   Other-0.121115 %70 %
191Uses JSON-LD addressLocality   Other-0.121118 %67 %
192Uses JSON-LD PostalAddress   Other-0.121118 %68 %
193Uses Schema faqpage   Other-0.12119 %67 %
194Uses JSON-LD FAQPage   Other-0.12119 %68 %
195Number of Twitter Accounts   Authority-0.125124 %70 %
196Entities in H4 Tags-0.1215219 %88 %
197Uses JSON-LD streetAddress   Other-0.121117 %67 %
198LSI Words in H3 Tags   Relevancy-0.121031941 %93 %
199Number of H4 Tags   Size-0.1299436 %82 %
200Variations making whole H1 Tags   Relevancy-0.12117 %77 %