Measures 141728 SEO Factors

140006 Built-In SEO Factors

131004 On-page SEO Factors

9002 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 2025-06     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-0.2642778 %84 %
2Number of Distinct Entities Used   Diversity-0.26672779 %90 %
3Number of Unique LSI Words Used   Diversity-0.25116532583 %82 %
4Number of Top 100 Shared Factors Used   Diversity-0.25402995 %94 %
5Number of Top 200 Shared Factors Used   Diversity-0.25533995 %94 %
6Entities in Title Tag   Relevancy-0.258368 %89 %
7Number of Top 50 Shared Factors Used   Diversity-0.24181293 %91 %
8Variations in Body Tags   Relevancy-0.239133628277 %88 %
9Variations in HTML Tags   Relevancy-0.239133627875 %91 %
10Search Result Domain is .com, .net, or .org   Other-0.22115 %73 %
11Variations in Sentences   Relevancy-0.2241823870 %90 %
12Entities in the HTML Tag   Relevancy-0.22158713573 %95 %
13Variations in Div Tags   Relevancy-0.222279513272 %90 %
14Variations in Search Result Link Text   Relevancy-0.229275 %81 %
15Variations in H1 and H2 Tags   Relevancy-0.2282462 %86 %
16Variations in H1, H2, and H3 Tags   Relevancy-0.22161765 %88 %
17Variations in H1-H6 Tags   Relevancy-0.22207866 %87 %
18Entities in Sentences   Relevancy-0.2269713072 %95 %
19Variations in Search Result Display URL   Relevancy-0.229275 %83 %
20Variations in P Tags   Relevancy-0.2249113567 %90 %
21Load Time Milliseconds   Performance-0.2217518158384 %91 %
22Number of Factors Used   Diversity-0.2258118095 %90 %
23Entities in H2 Tags-0.2137755 %88 %
24Search Result Domain is .com   Other-0.21114 %72 %
25Term Frequency   Relevancy-0.216375 %90 %
26Clean Keyword Density in the HTML Tag   Relevancy-0.21192469 %80 %
27Entities in H1 Tags-0.216257 %86 %
28Variations in the Title Tag   Relevancy-0.2117263 %83 %
29Variations in A Tags   Relevancy-0.2139592567 %85 %
30Variations in LI Tags   Relevancy-0.226232266 %86 %
31Variations in H1 Tags   Relevancy-0.214155 %82 %
32Entities in Meta Description Tag   Relevancy-0.225358 %86 %
33Variations in Search Result Document File Name   Relevancy-0.28143 %79 %
34Variations in Meta Description   Relevancy-0.245253 %83 %
35Variations in H2 Tags   Relevancy-0.270347 %84 %
36Leading Variations in H1-H6 Tags   Relevancy-0.1924245 %84 %
37Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1918242 %84 %
38Variations in Search Result URL Path   Relevancy-0.1913146 %81 %
39LSI Words in Title Tag   Relevancy-0.1918668 %92 %
40Variations in OpenGraph Title   Relevancy-0.1919152 %79 %
41Title Tag Has Entities   Relevancy-0.191169 %82 %
42Variations in Script Tags   Relevancy-0.19281238059 %87 %
43Variation Density in Top 30KB   Relevancy-0.19307359 %82 %
44Variation Count in Top 30KB   Relevancy-0.1959703165 %84 %
45Entities in H3 Tags-0.1934745 %87 %
46Variations in First 100 Words   Relevancy-0.19199763 %85 %
47LSI Words in Sentences   Relevancy-0.19440374769 %94 %
48Variations in A Tag HREF Attributes   Relevancy-0.1941014360 %87 %
49Variations in Distinct A Tag HREF Attributes   Relevancy-0.1932882860 %87 %
50Variations in ALT Attributes   Relevancy-0.19159946 %83 %
51Variations in Search Result URL   Relevancy-0.1821252 %78 %
52Variations in OpenGraph Description   Relevancy-0.1851249 %81 %
53Variations in the Canonical URL   Relevancy-0.1810249 %82 %
54Has Entities in H1 Tags   Relevancy-0.181158 %81 %
55Number of Referring Domains   Authority-0.1822664941 %43 %
56Variations in Absolute URLs   Relevancy-0.1862355560 %87 %
57Variations in Span Tags   Relevancy-0.188691051 %87 %
58Search Result Number of Dirs in Path   Other-0.184270 %75 %
59TF/IDF   Relevancy-0.181156 %86 %
60Number of Sentences   Size-0.17225012283 %84 %
61Number of Backlinks   Authority-0.17177425340542 %44 %
62Number of HTML Tags   Size-0.173019102284 %85 %
63Unabridged Word Count   Size-0.178976182884 %85 %
64Word Count   Size-0.176770146784 %84 %
65Leading Variations in H1 Tags   Relevancy-0.172126 %80 %
66Leading Variations in Title Tag   Relevancy-0.171129 %82 %
67Clean Text Kilobytes   Size-0.17701280 %85 %
68Exact Matches in the HTML Tag   Relevancy-0.176421024 %84 %
69Number of Do Follow Backlinks   Authority-0.17152178319038 %44 %
70Number of Includes   Technology-0.17562780 %77 %
71Number of P Tags   Size-0.172113979 %83 %
72Number of Images   Size-0.173343080 %83 %
73Variations in Nav Tags   Relevancy-0.17123853447 %82 %
74Number of Images with ALT Text   Size-0.171522075 %85 %
75Variations in H3 Tags   Relevancy-0.1784336 %82 %
76LSI Words in Meta Description Tag   Relevancy-0.17691156 %90 %
77LSI Words in H1 Tags   Relevancy-0.1720560 %90 %
78Number of Facebook Pages   Authority-0.1733362 %80 %
79Number of No Follow Backlinks   Authority-0.174333746932 %40 %
80Has Entities in H2 Tags   Relevancy-0.161156 %81 %
81Page Size Kilobytes   Size-0.1689725683 %84 %
82LSI Words in H2 Tags   Relevancy-0.16972159 %92 %
83Number Of JSON-LD Types   Relevancy-0.161231457 %82 %
84Number of Absolute URLs   Authority-0.16107026583 %82 %
85Number of Questions   Size-0.16841166 %82 %
86Meta Description Tag Has Entities   Relevancy-0.161158 %76 %
87Percentage of DoFollow Links   Authority-0.161008681 %86 %
88Percentage of DoFollow Internal Links   Authority-0.16917580 %86 %
89Number of H2 Tags   Size-0.1622772 %83 %
90Has JSON-LD Schema Markup   Relevancy-0.161154 %73 %
91Number of Heading Tags   Size-0.16682280 %83 %
92Number of DoFollow Links   Authority-0.1555813681 %82 %
93Number of CSS Includes   Technology-0.15221072 %76 %
94Number of HTTPS Links   Authority-0.1556213880 %82 %
95Number of Links   Authority-0.1556514081 %80 %
96Variations in Main Tags   Relevancy-0.1576315335 %83 %
97Number of Internal Links   Authority-0.1555312580 %83 %
98Inline CSS Kilobytes   Size-0.152656463 %85 %
99Number of JavaScript Includes   Technology-0.15431880 %78 %
100Leading Variations in H2 Tags   Relevancy-0.159122 %82 %
101Flesch Kincaid Reading Grade Level   Other-0.157292 %83 %
102Inline JavaScript Kilobytes   Size-0.155656980 %82 %
103Search Result Host Length   Size-0.15241883 %76 %
104Variations in Section Tags   Relevancy-0.1516722137 %83 %
105Search Result Domain Length   Size-0.15241883 %77 %
106Exact Matches in H1-H6 Tags   Relevancy-0.1510117 %80 %
107Number of Social Pages   Authority-0.1543566 %79 %
108Has Entities in H3 Tags   Relevancy-0.151146 %79 %
109Number of US Phone Numbers   Trust-0.153612047 %82 %
110Has Canonical URL   Authority-0.151170 %76 %
111Number of H1 Tags   Size-0.144273 %80 %
112Entities in H4 Tags-0.1428221 %82 %
113Number of Questions In Headings   Size-0.149237 %80 %
114Number of DoFollow External Links   Authority-0.14981475 %77 %
115Search Result Uses HTTPS   Other-0.141183 %81 %
116Number of Instagram Pages   Authority-0.1424245 %75 %
117Uses JSON-LD name   Other-0.141154 %71 %
118Search Result URL Length   Size-0.141086294 %56 %
119Number of H3 Tags   Size-0.1431963 %81 %
120Number of External Links   Authority-0.141121576 %78 %
121Number of Prices   Size-0.1423626667 %84 %
122Variations in Footer Tags   Relevancy-0.1454111333 %81 %
123Has Meta Viewport   Technology-0.141181 %79 %
124Variations making whole A Tags   Relevancy-0.1438231 %75 %
125Title Word Count   Size-0.1419882 %73 %
126Variations making whole H1-H6 Tags   Relevancy-0.143115 %76 %
127Variations in the last 100 words   Relevancy-0.14197446 %82 %
128Uses Schema name   Other-0.141159 %69 %
129Word Count in Meta Description   Size-0.14892067 %75 %
130Variations Making Whole Span Tags   Relevancy-0.1414120 %80 %
131Variations in TITLE Attributes   Relevancy-0.14422633 %83 %
132Number of Forms   Technology-0.1412255 %74 %
133Variations making whole H1, H2, and H3 Tags   Relevancy-0.143114 %76 %
134LSI Words in H3 Tags   Relevancy-0.141212251 %89 %
135Exact Matches in Sentences   Relevancy-0.1464318 %84 %
136Number of Images without ALT Text   Size-0.142421060 %80 %
137Variations Making Whole LI Tags   Relevancy-0.147126 %76 %
138Number of Social Accounts   Authority-0.1411246 %74 %
139Number of HTML Comments   Size-0.1412304575 %79 %
140Title Length   Size-0.14825282 %73 %
141Meta Description Length   Size-0.1458412367 %77 %
142Is Home Page   Other-0.141120 %44 %
143Uses JSON-LD url   Other-0.141144 %70 %
144Uses JSON-LD description   Other-0.141143 %64 %
145Has Schema Markup   Relevancy-0.141163 %74 %
146Uses JSON-LD ListItem   Other-0.131135 %68 %
147Headings Has Question   Other-0.131137 %73 %
148Has FavIcon   Technology-0.131174 %75 %
149Variations in Meta Twitter Content   Relevancy-0.137124 %69 %
150Has US Phone Number   Trust-0.131149 %72 %
151Has Form   Technology-0.131153 %70 %
152Number of LinkedIn Pages   Authority-0.1311129 %74 %
153Variations in Search Result Summary   Relevancy-0.1347275 %66 %
154Uses Schema breadcrumblist   Other-0.131139 %68 %
155Average Words Per Sentence   Size-0.132343480 %79 %
156Uses Schema listitem   Other-0.131139 %68 %
157Has Meta Charset   Technology-0.131177 %75 %
158Uses Schema url   Other-0.131154 %65 %
159Variations in Article Tags   Relevancy-0.1315831424 %73 %
160Uses JSON-LD BreadcrumbList   Other-0.131135 %69 %
161Number of Email Addresses   Trust-0.1339443 %79 %
162Has Meta Description   Relevancy-0.131166 %76 %
163Has Privacy Policy   Trust-0.131156 %70 %
164Uses Schema description   Other-0.131147 %62 %
165Has OpenGraph Type   Relevancy-0.131161 %73 %
166Is Article Page   Other-0.131145 %65 %
167Percentage of DoFollow External Links   Authority-0.13311273 %74 %
168Has Contact Page   Trust-0.131163 %72 %
169Variations in I Tags   Relevancy-0.13232524 %75 %
170Leading Variations in H3 Tags   Relevancy-0.1310116 %77 %
171Variations in Meta Twitter Description   Relevancy-0.1318122 %72 %
172Is OpenGraph Type Article   Technology-0.131135 %58 %
173Exact Matches in Top 30KB   Relevancy-0.1335216 %76 %
174Variations in Strong Tags   Relevancy-0.1374226 %80 %
175Number of Facebook Accounts   Authority-0.135131 %74 %
176Number of Questions In H2 Tags   Size-0.135122 %78 %
177Is Purchase Page   Other-0.131140 %63 %
178Uses Schema item   Other-0.131126 %60 %
179Has Email   Trust-0.131143 %69 %
180Has Meta Twitter Card   Authority-0.131152 %69 %
181Has OpenGraph Image   Relevancy-0.131152 %70 %
182Uses JSON-LD image   Other-0.131116 %67 %
183Number of Nofollow Links   Authority-0.13175424 %74 %
184Uses JSON-LD Product   Other-0.13116 %52 %
185Has Terms of Service   Trust-0.131137 %68 %
186Number of Twitter Accounts   Authority-0.133126 %67 %
187Exact Matches in Title Tag   Relevancy-0.132114 %79 %
188Number Of Claimed Brands   Other-0.1250224 %74 %
189Uses JSON-LD item   Other-0.121122 %63 %
190Uses Schema thing   Other-0.12114 %44 %
191Uses Schema addresslocality   Other-0.121118 %60 %
192Has Entities in H4 Tags   Relevancy-0.121122 %71 %
193Uses JSON-LD PostalAddress   Other-0.121117 %61 %
194Uses JSON-LD SearchAction   Other-0.121127 %62 %
195Uses Schema product   Other-0.12117 %51 %
196Uses JSON-LD WebPage   Other-0.121133 %59 %
197Uses JSON-LD datePublished   Other-0.121136 %58 %
198Number of H4 Tags   Size-0.1219438 %75 %
199Uses Schema postaladdress   Other-0.121119 %59 %
200Uses Schema organization   Other-0.121134 %62 %