Measures 146396 SEO Factors

144674 Built-In SEO Factors

135557 On-page SEO Factors

9117 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 2025-11     previous

Top SEO Factor data is updated daily for latest "month to date" measurements.

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique LSI Words Used   Diversity-0.2596529980 %79 %
2Number of Top 200 Shared Factors Used   Diversity-0.23523798 %92 %
3Number of Top 100 Shared Factors Used   Diversity-0.23392898 %93 %
4Number of Unique Variations Used   Diversity-0.2329776 %89 %
5Number of Distinct Entities Used   Diversity-0.22652876 %94 %
6Entities in Title Tag   Relevancy-0.227364 %93 %
7Number of Top 50 Shared Factors Used   Diversity-0.22161298 %93 %
8Variations in H1, H2, and H3 Tags   Relevancy-0.2220659 %86 %
9Variations in H1-H6 Tags   Relevancy-0.2122760 %88 %
10Entities in Sentences   Relevancy-0.2166913567 %95 %
11Load Time Milliseconds   Performance-0.2132075164882 %90 %
12Entities in the HTML Tag   Relevancy-0.2174613971 %96 %
13Variations in H1 and H2 Tags   Relevancy-0.2111456 %87 %
14Search Result Domain is .com, .net, or .org   Other-0.21115 %74 %
15Variations in Search Result Document File Name   Relevancy-0.213140 %82 %
16Variations in Div Tags   Relevancy-0.216259971 %93 %
17Number of Factors Used   Diversity-0.233917198 %88 %
18Variations in Search Result URL Path   Relevancy-0.23142 %83 %
19Variations in Body Tags   Relevancy-0.2179920876 %91 %
20Search Result Domain is .com   Other-0.2115 %73 %
21Variations in P Tags   Relevancy-0.21312662 %90 %
22Variation Count in Top 30KB   Relevancy-0.2751761 %86 %
23Variations in HTML Tags   Relevancy-0.2179920575 %92 %
24Number of Includes   Technology-0.2552676 %82 %
25Clean Keyword Density in the HTML Tag   Relevancy-0.27365 %79 %
26Variations in LI Tags   Relevancy-0.21721960 %91 %
27Variations in Sentences   Relevancy-0.21652868 %90 %
28Variations in the Canonical URL   Relevancy-0.27144 %87 %
29Term Frequency   Relevancy-0.24374 %88 %
30Entities in H1 Tags-0.26251 %89 %
31Variations in the Title Tag   Relevancy-0.23261 %87 %
32Variations in A Tags   Relevancy-0.21402161 %87 %
33Number of Referring Domains   Authority-0.217088749 %65 %
34Leading Variations in H1-H6 Tags   Relevancy-0.197241 %88 %
35Variations in First 100 Words   Relevancy-0.1917560 %86 %
36Entities in H2 Tags-0.1929747 %90 %
37Variations in H1 Tags   Relevancy-0.193149 %86 %
38Leading Variations in H1, H2, and H3 Tags   Relevancy-0.196239 %87 %
39Unabridged Word Count   Size-0.194437178381 %90 %
40Variations in Search Result Link Text   Relevancy-0.193279 %84 %
41Clean Text Kilobytes   Size-0.19311272 %89 %
42Variations in Search Result Display URL   Relevancy-0.193279 %85 %
43Word Count   Size-0.193797138581 %89 %
44Number of Images   Size-0.191563273 %89 %
45LSI Words in Sentences   Relevancy-0.19316970361 %93 %
46Number of HTML Tags   Size-0.193693108082 %88 %
47Number of Backlinks   Authority-0.19124727502350 %66 %
48Number of CSS Includes   Technology-0.1922970 %79 %
49Variations in H2 Tags   Relevancy-0.1911340 %84 %
50Number of Images with ALT Text   Size-0.181102368 %88 %
51Number of P Tags   Size-0.181353771 %89 %
52Variations in A Tag HREF Attributes   Relevancy-0.183233655 %91 %
53Number of Heading Tags   Size-0.18552172 %86 %
54Variation Density in Top 30KB   Relevancy-0.187257 %83 %
55Variations in Meta Description   Relevancy-0.184250 %84 %
56Variations in Search Result URL   Relevancy-0.183153 %79 %
57Variations in Distinct A Tag HREF Attributes   Relevancy-0.182442255 %91 %
58Has Entities in H1 Tags   Relevancy-0.181152 %85 %
59TF/IDF   Relevancy-0.181153 %86 %
60Number of Do Follow Backlinks   Authority-0.18122239436545 %65 %
61Variations in ALT Attributes   Relevancy-0.1855841 %84 %
62Number of Forms   Technology-0.1819353 %83 %
63Variations in Absolute URLs   Relevancy-0.182414556 %90 %
64Number of Facebook Pages   Authority-0.186254 %83 %
65Entities in Meta Description Tag   Relevancy-0.188354 %88 %
66Number of HTTPS Links   Authority-0.1841914778 %87 %
67Title Tag Has Entities   Relevancy-0.181164 %87 %
68Entities in H3 Tags-0.1829741 %92 %
69Search Result Number of Dirs in Path   Other-0.183271 %78 %
70Number of Links   Authority-0.1842214978 %86 %
71Has Form   Technology-0.171152 %77 %
72Variations in Main Tags   Relevancy-0.174845735 %86 %
73Variations in OpenGraph Title   Relevancy-0.173150 %80 %
74Number of DoFollow Links   Authority-0.1740914378 %87 %
75Number of Internal Links   Authority-0.1738913377 %87 %
76Variations in OpenGraph Description   Relevancy-0.174245 %82 %
77Variations in Span Tags   Relevancy-0.1735847 %88 %
78Number of H1 Tags   Size-0.1711266 %87 %
79Has JSON-LD Schema Markup   Relevancy-0.171149 %78 %
80Number of HTML Comments   Size-0.175815968 %82 %
81Leading Variations in Title Tag   Relevancy-0.171130 %81 %
82Leading Variations in H1 Tags   Relevancy-0.171126 %82 %
83Number of External Links   Authority-0.17551574 %86 %
84Number of No Follow Backlinks   Authority-0.171967352638 %63 %
85Variations in Script Tags   Relevancy-0.178536859 %83 %
86Average Words Per Sentence   Size-0.172293274 %82 %
87Percentage of DoFollow Links   Authority-0.17987977 %86 %
88Number of H2 Tags   Size-0.1716763 %85 %
89Number of Images without ALT Text   Size-0.17601055 %87 %
90Percentage of DoFollow Internal Links   Authority-0.16896976 %84 %
91Has Entities in H2 Tags   Relevancy-0.161148 %84 %
92Has Meta Charset   Technology-0.161170 %82 %
93LSI Words in Title Tag   Relevancy-0.1616562 %93 %
94Number of JavaScript Includes   Technology-0.16441778 %82 %
95Number of DoFollow External Links   Authority-0.16531373 %86 %
96Search Result Host Length   Size-0.16251681 %80 %
97Search Result Domain Length   Size-0.16251681 %81 %
98Number of Sentences   Size-0.1658812279 %82 %
99Variations in Footer Tags   Relevancy-0.1657631 %83 %
100LSI Words in H1 Tags   Relevancy-0.1617452 %92 %
101Exact Matches in the HTML Tag   Relevancy-0.168261525 %81 %
102Variations in H3 Tags   Relevancy-0.1616331 %84 %
103Flesch Kincaid Reading Grade Level   Other-0.166194 %86 %
104Number of H3 Tags   Size-0.1631957 %83 %
105Variations in Nav Tags   Relevancy-0.161651941 %83 %
106Has Canonical URL   Authority-0.151168 %79 %
107Leading Variations in H2 Tags   Relevancy-0.153119 %82 %
108Inline CSS Kilobytes   Size-0.151915463 %85 %
109LSI Words in H2 Tags   Relevancy-0.15781849 %90 %
110Number of Questions   Size-0.15811164 %76 %
111LSI Words in Meta Description Tag   Relevancy-0.15351051 %91 %
112Variations making whole H1-H6 Tags   Relevancy-0.152115 %82 %
113Variations in Section Tags   Relevancy-0.15911432 %85 %
114Entities in H4 Tags-0.159220 %90 %
115Number Of JSON-LD Types   Relevancy-0.151181353 %84 %
116Number of Questions In Headings   Size-0.157233 %82 %
117Has Meta Viewport   Technology-0.151178 %81 %
118Uses JSON-LD name   Other-0.151150 %77 %
119Number of Instagram Pages   Authority-0.158241 %78 %
120Variations making whole H1, H2, and H3 Tags   Relevancy-0.151114 %82 %
121Variations in the last 100 words   Relevancy-0.159343 %79 %
122Number of Prices   Size-0.1529628068 %81 %
123Number of Absolute URLs   Authority-0.1599028580 %81 %
124Number of Nofollow Links   Authority-0.1544626 %80 %
125Variations Making Whole LI Tags   Relevancy-0.155122 %79 %
126Has Entities in H3 Tags   Relevancy-0.151141 %84 %
127Search Result URL Length   Size-0.15926298 %63 %
128Number of Social Pages   Authority-0.1511459 %81 %
129Page Size Kilobytes   Size-0.14110531780 %77 %
130Percentage of DoFollow External Links   Authority-0.14301071 %81 %
131Search Result Uses HTTPS   Other-0.141181 %85 %
132Meta Description Length   Size-0.1421711464 %78 %
133Has OpenGraph Type   Relevancy-0.141157 %72 %
134Number of LinkedIn Pages   Authority-0.143127 %76 %
135Variations in Meta Twitter Content   Relevancy-0.142124 %71 %
136Word Count in Meta Description   Size-0.14381964 %79 %
137Variations in I Tags   Relevancy-0.1412321 %84 %
138Headings Has Question   Other-0.141133 %76 %
139Exact Matches in H1-H6 Tags   Relevancy-0.1411115 %82 %
140Variations in Meta Twitter Description   Relevancy-0.144123 %75 %
141Has Email   Trust-0.141140 %70 %
142Has Meta Twitter Card   Authority-0.141148 %66 %
143Title Word Count   Size-0.1418878 %77 %
144Has Meta Description   Relevancy-0.141163 %74 %
145Title Length   Size-0.141224978 %77 %
146Number of Facebook Accounts   Authority-0.142126 %79 %
147Uses JSON-LD url   Other-0.141145 %77 %
148Number of Email Addresses   Trust-0.14280540 %81 %
149LSI Words in H3 Tags   Relevancy-0.141242143 %89 %
150Variations in Strong Tags   Relevancy-0.1411223 %78 %
151Number of US Phone Numbers   Trust-0.146011237 %82 %
152Has OpenGraph Image   Relevancy-0.141151 %66 %
153Meta Description Tag Has Entities   Relevancy-0.141155 %83 %
154Has FavIcon   Technology-0.141172 %77 %
155Uses Schema name   Other-0.141157 %70 %
156Has Schema Markup   Relevancy-0.141161 %74 %
157Variations making whole A Tags   Relevancy-0.146126 %79 %
158Is Purchase Page   Other-0.141148 %67 %
159Is Store Page   Other-0.141145 %72 %
160Uses JSON-LD CollectionPage   Other-0.14115 %38 %
161Has US Phone Number   Trust-0.141136 %72 %
162Variations in TITLE Attributes   Relevancy-0.1487535 %80 %
163Percentage of NoFollow Links   Authority-0.1311324 %75 %
164Has Privacy Policy   Trust-0.131156 %76 %
165Uses Schema collectionpage   Other-0.13115 %37 %
166Uses Schema organization   Other-0.131133 %70 %
167Number of H4 Tags   Size-0.1320434 %84 %
168Uses Schema url   Other-0.131153 %71 %
169Number of Questions In H3 Tags   Size-0.134116 %76 %
170Inline JavaScript Kilobytes   Size-0.1358712577 %73 %
171Is Home Page   Other-0.131119 %40 %
172Uses JSON-LD ListItem   Other-0.131132 %73 %
173Exact Matches in Top 30KB   Relevancy-0.1324214 %76 %
174Variations Making Whole Span Tags   Relevancy-0.135118 %80 %
175Has Contact Page   Trust-0.131159 %74 %
176Has Meta Twitter Description   Authority-0.131128 %58 %
177Variations making whole H1 Tags   Relevancy-0.13119 %79 %
178Uses Schema image   Other-0.131121 %70 %
179Is Pagination Page   Other-0.131120 %65 %
180Uses JSON-LD image   Other-0.131116 %70 %
181Has Terms of Service   Trust-0.131141 %69 %
182Is Article Page   Other-0.131138 %68 %
183Percentage of NoFollow Internal Links   Authority-0.139215 %74 %
184Uses JSON-LD Organization   Other-0.131129 %73 %
185Leading Variations in H3 Tags   Relevancy-0.135114 %78 %
186Has Meta Twitter Title   Authority-0.131130 %59 %
187Uses JSON-LD description   Other-0.131137 %71 %
188Number of NoFollow External Links   Authority-0.1321317 %78 %
189Variations in Button Tags   Relevancy-0.133829 %81 %
190Has Entities in H4 Tags   Relevancy-0.121120 %82 %
191Variations in H4-H6 Tags   Relevancy-0.1216115 %83 %
192Number of Questions In H2 Tags   Size-0.124121 %75 %
193Uses Schema listitem   Other-0.121140 %68 %
194Number of Social Accounts   Authority-0.124240 %79 %
195Variations in ID Attributes   Relevancy-0.1210211 %82 %
196Variations in Value Attributes   Relevancy-0.1222110 %81 %
197Has Google Verify   Technology-0.121121 %69 %
198Uses JSON-LD BreadcrumbList   Other-0.121131 %71 %
199Search Result Summary Length   Size-0.1216015197 %71 %
200Uses Schema sku   Other-0.12116 %28 %