Measures 142003 SEO Factors

140281 Built-In SEO Factors

131269 On-page SEO Factors

9012 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 2025-07     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-0.2619677 %90 %
2Number of Unique LSI Words Used   Diversity-0.2580729082 %82 %
3Entities in Title Tag   Relevancy-0.2410367 %91 %
4Number of Distinct Entities Used   Diversity-0.24562676 %92 %
5Number of Top 100 Shared Factors Used   Diversity-0.24392995 %95 %
6Number of Top 200 Shared Factors Used   Diversity-0.24523994 %95 %
7Search Result Domain is .com, .net, or .org   Other-0.23115 %76 %
8Load Time Milliseconds   Performance-0.2329088169083 %93 %
9Number of Top 50 Shared Factors Used   Diversity-0.22161294 %94 %
10Search Result Domain is .com   Other-0.22114 %76 %
11Variations in H1 and H2 Tags   Relevancy-0.2265460 %88 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.22152663 %89 %
13Variations in H1-H6 Tags   Relevancy-0.22246865 %88 %
14Variations in Body Tags   Relevancy-0.2210079050675 %91 %
15Variations in HTML Tags   Relevancy-0.2110079050174 %92 %
16Variations in Div Tags   Relevancy-0.212964920872 %92 %
17Variations in Search Result Link Text   Relevancy-0.2111273 %83 %
18Variations in Sentences   Relevancy-0.2130613869 %91 %
19Variations in Search Result Display URL   Relevancy-0.2111274 %84 %
20Variations in P Tags   Relevancy-0.2129443667 %92 %
21Entities in the HTML Tag   Relevancy-0.2154212471 %96 %
22Number of Factors Used   Diversity-0.2144317795 %91 %
23Entities in Sentences   Relevancy-0.2153512170 %95 %
24Variations in the Title Tag   Relevancy-0.2114263 %86 %
25Term Frequency   Relevancy-0.26375 %91 %
26Variations in H1 Tags   Relevancy-0.222151 %84 %
27Clean Keyword Density in the HTML Tag   Relevancy-0.2193468 %82 %
28Entities in H2 Tags-0.236651 %91 %
29LSI Words in Title Tag   Relevancy-0.219669 %93 %
30Variations in Search Result Document File Name   Relevancy-0.212142 %82 %
31Variations in LI Tags   Relevancy-0.1921342265 %89 %
32Variations in H2 Tags   Relevancy-0.1956344 %86 %
33Variations in Meta Description   Relevancy-0.1939251 %86 %
34LSI Words in Sentences   Relevancy-0.191496871871 %95 %
35Entities in Meta Description Tag   Relevancy-0.1915354 %87 %
36Variations in A Tags   Relevancy-0.1941083365 %88 %
37Variation Density in Top 30KB   Relevancy-0.19372458 %82 %
38Variation Count in Top 30KB   Relevancy-0.1852123465 %84 %
39Number of Includes   Technology-0.18572679 %83 %
40Entities in H1 Tags-0.187254 %87 %
41Variations in OpenGraph Title   Relevancy-0.1812149 %82 %
42Number of Backlinks   Authority-0.181652561679145 %69 %
43Variations in Script Tags   Relevancy-0.182735512658 %88 %
44Leading Variations in H1-H6 Tags   Relevancy-0.1826244 %87 %
45Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1821241 %87 %
46Number of Referring Domains   Authority-0.1823345144 %67 %
47Variations in ALT Attributes   Relevancy-0.18272744 %84 %
48Variations in Search Result URL Path   Relevancy-0.1813144 %85 %
49Variations in First 100 Words   Relevancy-0.18197661 %87 %
50Variations in OpenGraph Description   Relevancy-0.1850245 %84 %
51Number of HTML Tags   Size-0.174514105483 %87 %
52Variations in Absolute URLs   Relevancy-0.1765817259 %88 %
53Number of Do Follow Backlinks   Authority-0.171378747508541 %68 %
54Variations in the Canonical URL   Relevancy-0.1767249 %85 %
55Entities in H3 Tags-0.1734641 %90 %
56Number of Facebook Pages   Authority-0.1710260 %82 %
57Variations in Span Tags   Relevancy-0.176041148 %89 %
58TF/IDF   Relevancy-0.171156 %86 %
59Unabridged Word Count   Size-0.1710486174683 %88 %
60Leading Variations in H1 Tags   Relevancy-0.173125 %84 %
61Word Count   Size-0.179328140583 %87 %
62LSI Words in Meta Description Tag   Relevancy-0.17491156 %90 %
63Variations in Search Result URL   Relevancy-0.1720250 %79 %
64LSI Words in H2 Tags   Relevancy-0.17882059 %92 %
65Leading Variations in Title Tag   Relevancy-0.171129 %84 %
66Variations in A Tag HREF Attributes   Relevancy-0.1725853959 %91 %
67Number of Images   Size-0.171963279 %84 %
68Clean Text Kilobytes   Size-0.17771279 %88 %
69Number of Images with ALT Text   Size-0.17972174 %85 %
70Variations in Distinct A Tag HREF Attributes   Relevancy-0.1719322659 %92 %
71Title Tag Has Entities   Relevancy-0.171168 %86 %
72Number of Sentences   Size-0.1755711881 %86 %
73LSI Words in H1 Tags   Relevancy-0.1716560 %89 %
74Number of CSS Includes   Technology-0.17221072 %81 %
75Has JSON-LD Schema Markup   Relevancy-0.171151 %79 %
76Page Size Kilobytes   Size-0.1776725782 %84 %
77Number of No Follow Backlinks   Authority-0.1727381473233 %63 %
78Variations in Main Tags   Relevancy-0.17150589036 %84 %
79Number of P Tags   Size-0.161283778 %86 %
80Search Result Number of Dirs in Path   Other-0.164270 %76 %
81Exact Matches in the HTML Tag   Relevancy-0.163001123 %85 %
82Variations in Nav Tags   Relevancy-0.1670344546 %84 %
83Percentage of DoFollow Internal Links   Authority-0.16917379 %87 %
84Percentage of DoFollow Links   Authority-0.161008580 %90 %
85Number of H2 Tags   Size-0.1620770 %86 %
86Number of Absolute URLs   Authority-0.16104625282 %82 %
87Inline JavaScript Kilobytes   Size-0.163637279 %81 %
88Has Entities in H1 Tags   Relevancy-0.161155 %82 %
89Number of HTTPS Links   Authority-0.1651614079 %85 %
90Flesch Kincaid Reading Grade Level   Other-0.166291 %87 %
91Has Entities in H2 Tags   Relevancy-0.161152 %85 %
92Number of Links   Authority-0.1651614280 %84 %
93Number of DoFollow Links   Authority-0.1650213980 %84 %
94Variations in H3 Tags   Relevancy-0.1587332 %83 %
95Number of Questions   Size-0.15981263 %85 %
96Number of Heading Tags   Size-0.15912279 %87 %
97Number of Instagram Pages   Authority-0.1515244 %81 %
98Number of Internal Links   Authority-0.1550812779 %85 %
99Number of Questions In Headings   Size-0.1513233 %81 %
100Has Canonical URL   Authority-0.151169 %79 %
101Inline CSS Kilobytes   Size-0.154676063 %82 %
102Title Word Count   Size-0.1520881 %75 %
103Number of Forms   Technology-0.1514253 %78 %
104Variations in Section Tags   Relevancy-0.1520052237 %86 %
105Number of H1 Tags   Size-0.1511272 %80 %
106Meta Description Tag Has Entities   Relevancy-0.151155 %82 %
107Number of JavaScript Includes   Technology-0.15461780 %84 %
108Search Result Host Length   Size-0.15251782 %77 %
109Has Meta Viewport   Technology-0.151180 %80 %
110Variations in TITLE Attributes   Relevancy-0.15396634 %83 %
111Variations in Footer Tags   Relevancy-0.1532621634 %85 %
112Search Result Domain Length   Size-0.15251782 %78 %
113Number Of JSON-LD Types   Relevancy-0.151211354 %83 %
114Number of US Phone Numbers   Trust-0.142761248 %85 %
115Number of Social Pages   Authority-0.1417464 %81 %
116Search Result Uses HTTPS   Other-0.141182 %85 %
117Word Count in Meta Description   Size-0.14591964 %78 %
118Number of External Links   Authority-0.141591675 %81 %
119Leading Variations in H2 Tags   Relevancy-0.147122 %83 %
120Title Length   Size-0.141365181 %76 %
121Number of DoFollow External Links   Authority-0.141561474 %80 %
122Number of HTML Comments   Size-0.146324974 %81 %
123Number of Questions In H2 Tags   Size-0.144119 %78 %
124Headings Has Question   Other-0.141133 %77 %
125Meta Description Length   Size-0.1433311964 %80 %
126Has Meta Description   Relevancy-0.141164 %79 %
127Number of Images without ALT Text   Size-0.141571158 %81 %
128LSI Words in H3 Tags   Relevancy-0.141321950 %90 %
129Number of LinkedIn Pages   Authority-0.144126 %74 %
130Number of Prices   Size-0.144986668 %84 %
131Has Meta Charset   Technology-0.141176 %78 %
132Has Contact Page   Trust-0.141162 %75 %
133Number of H3 Tags   Size-0.1456861 %82 %
134Variations in Meta Twitter Content   Relevancy-0.148122 %77 %
135Has Schema Markup   Relevancy-0.141161 %77 %
136Average Words Per Sentence   Size-0.145093480 %81 %
137Variations in Meta Twitter Description   Relevancy-0.1428120 %76 %
138Entities in H4 Tags-0.1485321 %86 %
139Exact Matches in H1-H6 Tags   Relevancy-0.1414116 %82 %
140Uses JSON-LD name   Other-0.141150 %77 %
141Has US Phone Number   Trust-0.141148 %75 %
142Variations making whole H1-H6 Tags   Relevancy-0.142114 %80 %
143Variations Making Whole Span Tags   Relevancy-0.1413116 %82 %
144Variations in Strong Tags   Relevancy-0.14101226 %81 %
145Has Form   Technology-0.141151 %73 %
146Has Entities in H3 Tags   Relevancy-0.141142 %84 %
147Has FavIcon   Technology-0.141172 %78 %
148Number of Facebook Accounts   Authority-0.143131 %74 %
149Variations making whole H1, H2, and H3 Tags   Relevancy-0.132112 %78 %
150Has Privacy Policy   Trust-0.131154 %72 %
151Has Meta Twitter Card   Authority-0.131150 %72 %
152Variations Making Whole LI Tags   Relevancy-0.133120 %78 %
153Is Purchase Page   Other-0.131141 %67 %
154Variations in the last 100 words   Relevancy-0.13198443 %81 %
155Number of Social Accounts   Authority-0.1311245 %75 %
156Has OpenGraph Image   Relevancy-0.131150 %72 %
157Variations in Article Tags   Relevancy-0.1314981523 %75 %
158Uses Schema name   Other-0.131157 %71 %
159Number of Email Addresses   Trust-0.13173546 %78 %
160Number of Twitter Accounts   Authority-0.135126 %70 %
161Percentage of DoFollow External Links   Authority-0.13351273 %77 %
162Variations in I Tags   Relevancy-0.13258524 %78 %
163Exact Matches in Sentences   Relevancy-0.1348216 %86 %
164Has OpenGraph Type   Relevancy-0.131158 %73 %
165Variations making whole A Tags   Relevancy-0.1349124 %78 %
166Number of Nofollow Links   Authority-0.13284523 %78 %
167Uses JSON-LD url   Other-0.131146 %73 %
168Number of Questions In H3 Tags   Size-0.134114 %76 %
169Is Home Page   Other-0.121120 %40 %
170Uses Schema url   Other-0.121152 %65 %
171Has Copyright   Trust-0.121160 %71 %
172Is OpenGraph Type Article   Technology-0.121131 %61 %
173Number Of Claimed Brands   Other-0.1214222 %76 %
174Uses Schema listitem   Other-0.121138 %66 %
175Is Store Page   Other-0.121143 %69 %
176Uses Schema breadcrumblist   Other-0.121138 %66 %
177Uses JSON-LD description   Other-0.121140 %68 %
178Exact Matches in Top 30KB   Relevancy-0.1236215 %78 %
179Variations in Search Result Summary   Relevancy-0.1246273 %60 %
180Is Article Page   Other-0.121142 %67 %
181Number of NoFollow External Links   Authority-0.1229216 %75 %
182Variations in H4-H6 Tags   Relevancy-0.1295218 %78 %
183Uses JSON-LD ListItem   Other-0.121134 %69 %
184Has Terms of Service   Trust-0.121134 %70 %
185Uses Schema description   Other-0.121143 %63 %
186Has HREF Lang   Technology-0.121112 %64 %
187Uses Schema item   Other-0.121127 %61 %
188Has Email   Trust-0.121146 %68 %
189Leading Variations in H3 Tags   Relevancy-0.1213115 %79 %
190Has Meta Robots   Other-0.121125 %67 %
191Variations making whole H1 Tags   Relevancy-0.12117 %77 %
192Percentage of NoFollow Links   Authority-0.1211221 %74 %
193Uses Schema website   Other-0.121136 %58 %
194Percentage of NoFollow External Links   Authority-0.126115 %71 %
195Uses JSON-LD BreadcrumbList   Other-0.121133 %70 %
196Number of HREF Lang Tags   Size-0.1221211 %74 %
197Exact Matches in Title Tag   Relevancy-0.122114 %81 %
198Number of YouTube Accounts   Technology-0.122110 %70 %
199Search Result Has Unmodified Page Title   Other-0.121150 %69 %
200Number of H4 Tags   Size-0.1268437 %78 %