Measures 148917 SEO Factors

147195 Built-In SEO Factors

138023 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 %89 %
2Number of Unique LSI Words Used   Diversity-0.2399730481 %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 %93 %
7Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
8Number of Top 50 Shared Factors Used   Diversity-0.21171297 %93 %
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-0.2144762 %91 %
13Variations in Body Tags   Relevancy-0.25618224577 %91 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.291661 %91 %
15Variations in H1 and H2 Tags   Relevancy-0.246459 %91 %
16Variations in HTML Tags   Relevancy-0.25618224176 %93 %
17Variations in P Tags   Relevancy-0.215023065 %92 %
18Variations in Sentences   Relevancy-0.1916283670 %92 %
19Variations in LI Tags   Relevancy-0.196022063 %90 %
20Term Frequency   Relevancy-0.196376 %91 %
21Number of Factors Used   Diversity-0.1928617498 %90 %
22Entities in the HTML Tag   Relevancy-0.1886713167 %97 %
23Variations in the Title Tag   Relevancy-0.1811263 %87 %
24Entities in Sentences   Relevancy-0.1876212964 %97 %
25Entities in H2 Tags-0.1836750 %93 %
26Number of Referring Domains   Authority-0.184628727049 %74 %
27Entities in H1 Tags-0.188250 %91 %
28Variations in H2 Tags   Relevancy-0.1836346 %89 %
29Variations in First 100 Words   Relevancy-0.18178764 %87 %
30Variations in A Tags   Relevancy-0.1819412363 %89 %
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 %
34Number of Backlinks   Authority-0.1863097093071149 %76 %
35Variations in H1 Tags   Relevancy-0.1811150 %84 %
36Word Count   Size-0.1810039144583 %88 %
37Variations in Meta Description   Relevancy-0.1835254 %86 %
38Unabridged Word Count   Size-0.1846360189183 %89 %
39Clean Text Kilobytes   Size-0.172321275 %88 %
40Clean Keyword Density in the HTML Tag   Relevancy-0.17181469 %83 %
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-0.1741422365 %88 %
44Number of P Tags   Size-0.1716534074 %88 %
45Variations in Search Result URL Path   Relevancy-0.174143 %82 %
46Number of HTML Tags   Size-0.178552100384 %89 %
47Number of Do Follow Backlinks   Authority-0.1726127531764745 %76 %
48Entities in Meta Description Tag   Relevancy-0.1715355 %89 %
49Number of Includes   Technology-0.17592780 %83 %
50Number of Images   Size-0.172393175 %88 %
51Number of No Follow Backlinks   Authority-0.1730775371096638 %70 %
52Variations in A Tag HREF Attributes   Relevancy-0.179374157 %90 %
53Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1716240 %87 %
54Variations in Distinct A Tag HREF Attributes   Relevancy-0.176102757 %90 %
55Variations in ALT Attributes   Relevancy-0.1791745 %87 %
56Number of Images with ALT Text   Size-0.161222170 %88 %
57Entities in H3 Tags-0.1629742 %93 %
58Variations in Absolute URLs   Relevancy-0.1650956159 %90 %
59Number of Heading Tags   Size-0.161332175 %89 %
60Variations in the Canonical URL   Relevancy-0.1635247 %85 %
61Variations in OpenGraph Title   Relevancy-0.168153 %82 %
62Percentage of DoFollow Internal Links   Authority-0.16917178 %87 %
63Number of Facebook Pages   Authority-0.1619258 %83 %
64Variations in Span Tags   Relevancy-0.16359949 %89 %
65TF/IDF   Relevancy-0.161156 %87 %
66Variations in OpenGraph Description   Relevancy-0.1630249 %83 %
67Number of Sentences   Size-0.1683612582 %87 %
68Variations in Script Tags   Relevancy-0.1612075561 %88 %
69Number of H2 Tags   Size-0.1624767 %88 %
70Number of CSS Includes   Technology-0.16281073 %81 %
71Number of Internal Links   Authority-0.1638912178 %85 %
72Number of DoFollow Links   Authority-0.1639613179 %85 %
73Has JSON-LD Schema Markup   Relevancy-0.161153 %80 %
74Number of Links   Authority-0.1639713479 %86 %
75Number of HTTPS Links   Authority-0.1639613379 %86 %
76Percentage of DoFollow Links   Authority-0.151008179 %89 %
77LSI Words in Title Tag   Relevancy-0.1517558 %95 %
78Variations in Nav Tags   Relevancy-0.1524932745 %87 %
79Variations in Search Result URL   Relevancy-0.154252 %78 %
80Variations in H3 Tags   Relevancy-0.1546334 %86 %
81Number of H1 Tags   Size-0.154169 %87 %
82Variations in Main Tags   Relevancy-0.1552925936 %87 %
83Number of HTML Comments   Size-0.155164771 %87 %
84LSI Words in Sentences   Relevancy-0.15319962456 %96 %
85Number of H3 Tags   Size-0.1551959 %85 %
86Number of Absolute URLs   Authority-0.1595126882 %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 %
91Number of Instagram Pages   Authority-0.1519245 %77 %
92Flesch Kincaid Reading Grade Level   Other-0.157194 %89 %
93Title Tag Has Entities   Relevancy-0.151164 %87 %
94Number Of JSON-LD Types   Relevancy-0.14721455 %87 %
95Has Entities in H1 Tags   Relevancy-0.141151 %87 %
96Number of Forms   Technology-0.1411251 %79 %
97Number of Questions   Size-0.142571266 %83 %
98Variations in Footer Tags   Relevancy-0.1424611137 %86 %
99Number of Images without ALT Text   Size-0.142181158 %84 %
100Meta Description Length   Size-0.1424511767 %81 %
101Number of Questions In Headings   Size-0.1411337 %86 %
102Variations in Section Tags   Relevancy-0.148251635 %87 %
103Number of JavaScript Includes   Technology-0.14501880 %82 %
104Search Result Domain Length   Size-0.14251784 %82 %
105Search Result Host Length   Size-0.14251784 %82 %
106Number of External Links   Authority-0.14551475 %84 %
107Word Count in Meta Description   Size-0.14581967 %80 %
108Number of DoFollow External Links   Authority-0.14541274 %82 %
109Variations in Strong Tags   Relevancy-0.1450226 %84 %
110Inline CSS Kilobytes   Size-0.141756365 %85 %
111Has Meta Description   Relevancy-0.141165 %78 %
112Has Canonical URL   Authority-0.141171 %81 %
113Has Entities in H2 Tags   Relevancy-0.141150 %87 %
114Number of US Phone Numbers   Trust-0.1412201640 %78 %
115LSI Words in H1 Tags   Relevancy-0.1431447 %93 %
116Uses Microdata latitude   Other-0.14116 %14 %
117Uses Microdata longitude   Other-0.14116 %14 %
118Number of Social Pages   Authority-0.1421564 %81 %
119Has Meta Viewport   Technology-0.141181 %83 %
120Exact Matches in the HTML Tag   Relevancy-0.14288824 %88 %
121Number of LinkedIn Pages   Authority-0.1414130 %77 %
122Title Length   Size-0.141755182 %79 %
123LSI Words in Meta Description Tag   Relevancy-0.1423948 %93 %
124Has Privacy Policy   Trust-0.141155 %73 %
125Page Size Kilobytes   Size-0.1481630382 %79 %
126Average Words Per Sentence   Size-0.141392977 %80 %
127Leading Variations in H2 Tags   Relevancy-0.1415120 %83 %
128Search Result Uses HTTPS   Other-0.141183 %86 %
129Has Form   Technology-0.141151 %74 %
130Number of Facebook Accounts   Authority-0.134128 %78 %
131Uses Microdata geo   Other-0.13116 %15 %
132Variations making whole A Tags   Relevancy-0.1325128 %80 %
133Uses Microdata GeoCoordinates   Other-0.13116 %15 %
134Has Meta Charset   Technology-0.131173 %81 %
135Title Word Count   Size-0.1320881 %78 %
136Has US Phone Number   Trust-0.131142 %66 %
137Has FavIcon   Technology-0.131174 %80 %
138LSI Words in H2 Tags   Relevancy-0.131381847 %95 %
139Variations in the last 100 words   Relevancy-0.13183349 %85 %
140Uses Schema geo   Other-0.13116 %15 %
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 %
144Variations making whole H1-H6 Tags   Relevancy-0.1315114 %81 %
145Has Entities in H3 Tags   Relevancy-0.131142 %86 %
146Meta Description Tag Has Entities   Relevancy-0.131154 %83 %
147Uses Microdata addressCountry   Other-0.13115 %18 %
148Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %80 %
149Number of Prices   Size-0.1323637568 %81 %
150Has Email   Trust-0.131143 %73 %
151Has OpenGraph Type   Relevancy-0.131161 %75 %
152Variations Making Whole Span Tags   Relevancy-0.1315119 %86 %
153Inline JavaScript Kilobytes   Size-0.1352711579 %75 %
154Number of Email Addresses   Trust-0.13190543 %81 %
155Headings Has Question   Other-0.131136 %81 %
156Number of Social Accounts   Authority-0.1315242 %78 %
157Variations in Article Tags   Relevancy-0.132751424 %79 %
158Percentage of DoFollow External Links   Authority-0.13291173 %76 %
159Uses Schema name   Other-0.131160 %73 %
160Uses Microdata email   Other-0.13115 %15 %
161Has OpenGraph Image   Relevancy-0.131154 %74 %
162Variations in Button Tags   Relevancy-0.1333729 %81 %
163Variations in Meta Twitter Content   Relevancy-0.134125 %75 %
164Variations in Meta Twitter Description   Relevancy-0.1315124 %76 %
165Has Contact Page   Trust-0.131162 %75 %
166Uses Schema telephone   Other-0.131120 %65 %
167Variations Making Whole LI Tags   Relevancy-0.134123 %81 %
168Has Schema Markup   Relevancy-0.121163 %77 %
169Is Store Page   Other-0.121144 %68 %
170Uses JSON-LD url   Other-0.121145 %77 %
171Variations in TITLE Attributes   Relevancy-0.12138537 %83 %
172Uses Schema organization   Other-0.121136 %72 %
173Number of Questions In H3 Tags   Size-0.127217 %81 %
174Number Of Claimed Brands   Other-0.1225225 %77 %
175Variations in I Tags   Relevancy-0.12308423 %80 %
176Uses JSON-LD dayOfWeek   Other-0.12114 %31 %
177Leading Variations in H3 Tags   Relevancy-0.1215116 %80 %
178Uses Schema url   Other-0.121156 %70 %
179Uses Schema dayofweek   Other-0.12114 %31 %
180Has Terms of Service   Trust-0.121138 %68 %
181Uses JSON-LD Organization   Other-0.121132 %74 %
182Uses JSON-LD addressRegion   Other-0.121117 %64 %
183Number of Twitter Accounts   Authority-0.125124 %71 %
184Is Purchase Page   Other-0.121144 %66 %
185Uses Schema image   Other-0.121121 %67 %
186Uses Schema addressregion   Other-0.121118 %64 %
187Uses Schema postaladdress   Other-0.121119 %65 %
188Uses JSON-LD telePhone   Other-0.121115 %70 %
189Has Meta Twitter Card   Authority-0.121153 %73 %
190Uses Schema addresslocality   Other-0.121119 %65 %
191Uses JSON-LD addressLocality   Other-0.121118 %66 %
192Uses JSON-LD PostalAddress   Other-0.121118 %67 %
193Entities in H4 Tags-0.1215219 %88 %
194Uses Schema faqpage   Other-0.12119 %67 %
195Variations in ID Attributes   Relevancy-0.12354212 %82 %
196Variations making whole H1 Tags   Relevancy-0.12117 %77 %
197Number of H4 Tags   Size-0.1299436 %82 %
198Uses JSON-LD FAQPage   Other-0.12119 %68 %
199LSI Words in H3 Tags   Relevancy-0.121031941 %93 %
200Uses Microdata LocalBusiness   Other-0.12114 %25 %