Measures 139697 SEO Factors

137975 Built-In SEO Factors

129156 On-page SEO Factors

8819 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

SEO Factor Class

Size SEO Factors ( 54038 )
Relevancy SEO Factors ( 53364 )
Other SEO Factors ( 27542 )
Local SEO Factors ( 8646 )
Technology SEO Factors ( 1599 )
Authority SEO Factors ( 163 )
Pay Per Click SEO Factors ( 29 )
Diversity SEO Factors ( 15 )
Trust SEO Factors ( 15 )
Easy SEO Factors ( 3 )
Performance SEO Factors ( 1 )

SEO Factor Type

Size SEO Factors ( 54034 )
Keywords SEO Factors ( 41317 )
Schema SEO Factors ( 27488 )
Local SEO Factors ( 8647 )
LSI SEO Factors ( 8483 )
Entities SEO Factors ( 3542 )
Other SEO Factors ( 1705 )
Backlinks SEO Factors ( 72 )
Social SEO Factors ( 58 )
Page Links SEO Factors ( 29 )
Structure SEO Factors ( 23 )
Meta SEO Factors ( 14 )
On Page SEO Factors ( 3 )
These counts reflect SEO factors with generated docs.
Not all SEO factors have that yet.

Compare Top SEO Factors By Month


Compare Months Before and After Helpful Content Update ( note the factors that exited at the bottom )
Data Documentation - As seen on Digitaleer.com

TOP SEO Factors for 2025-03     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-0.2627776 %88 %
2Entities in Title Tag   Relevancy-0.257366 %90 %
3Number of Unique LSI Words Used   Diversity-0.25109027683 %70 %
4Number of Distinct Entities Used   Diversity-0.24752875 %92 %
5Number of Top 200 Shared Factors Used   Diversity-0.24523994 %93 %
6Number of Top 100 Shared Factors Used   Diversity-0.24392994 %93 %
7Search Result Domain is .com, .net, or .org   Other-0.23115 %75 %
8Number of Top 50 Shared Factors Used   Diversity-0.23161293 %91 %
9Load Time Milliseconds   Performance-0.22129506166683 %91 %
10Variations in Body Tags   Relevancy-0.226323024075 %90 %
11Variations in Search Result Link Text   Relevancy-0.224271 %81 %
12Search Result Domain is .com   Other-0.22114 %75 %
13Variations in Search Result Display URL   Relevancy-0.224271 %82 %
14Variations in HTML Tags   Relevancy-0.226323023875 %90 %
15Variations in Div Tags   Relevancy-0.221562410771 %89 %
16Variations in H1-H6 Tags   Relevancy-0.22125763 %88 %
17Variations in H1, H2, and H3 Tags   Relevancy-0.2286662 %88 %
18Variations in P Tags   Relevancy-0.2111142666 %88 %
19Variations in H1 and H2 Tags   Relevancy-0.2157459 %87 %
20Number of Factors Used   Diversity-0.2149617794 %90 %
21Variations in the Title Tag   Relevancy-0.214261 %84 %
22Variations in Sentences   Relevancy-0.2118583168 %89 %
23Term Frequency   Relevancy-0.216374 %89 %
24Clean Keyword Density in the HTML Tag   Relevancy-0.21175366 %82 %
25Entities in H1 Tags-0.2111255 %86 %
26Entities in the HTML Tag   Relevancy-0.260013170 %93 %
27Entities in Sentences   Relevancy-0.256012869 %93 %
28Variations in H1 Tags   Relevancy-0.216151 %83 %
29Entities in Meta Description Tag   Relevancy-0.28355 %86 %
30Leading Variations in H1-H6 Tags   Relevancy-0.215243 %86 %
31Entities in H2 Tags-0.1928652 %90 %
32Variations in Search Result Document File Name   Relevancy-0.197142 %81 %
33Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1913240 %86 %
34Variations in Meta Description   Relevancy-0.1935250 %84 %
35Variations in LI Tags   Relevancy-0.195301764 %88 %
36Variations in First 100 Words   Relevancy-0.19177661 %85 %
37Variations in Search Result URL   Relevancy-0.1915151 %77 %
38Variation Count in Top 30KB   Relevancy-0.1941202263 %86 %
39Variations in Search Result URL Path   Relevancy-0.198144 %82 %
40Variations in A Tags   Relevancy-0.1922012164 %88 %
41Variation Density in Top 30KB   Relevancy-0.19296255 %84 %
42Variations in OpenGraph Title   Relevancy-0.1919148 %79 %
43Variations in H2 Tags   Relevancy-0.1851344 %85 %
44Number of Includes   Technology-0.18752578 %80 %
45Variations in Script Tags   Relevancy-0.18145966958 %87 %
46Number of Referring Domains   Authority-0.1828556445 %34 %
47Variations in the Canonical URL   Relevancy-0.1852247 %81 %
48Variations in OpenGraph Description   Relevancy-0.1834245 %82 %
49Entities in H3 Tags-0.1827643 %89 %
50Number of Backlinks   Authority-0.18382933436045 %33 %
51Exact Matches in the HTML Tag   Relevancy-0.18369928 %86 %
52Variations in A Tag HREF Attributes   Relevancy-0.1810543659 %89 %
53Variations in Distinct A Tag HREF Attributes   Relevancy-0.187332459 %89 %
54TF/IDF   Relevancy-0.171153 %84 %
55Variations in Absolute URLs   Relevancy-0.1773745559 %88 %
56Number of Do Follow Backlinks   Authority-0.17373359378539 %33 %
57Variations in Span Tags   Relevancy-0.17412849 %85 %
58Leading Variations in Title Tag   Relevancy-0.171128 %81 %
59Variations in ALT Attributes   Relevancy-0.1784644 %83 %
60Has Entities in H1 Tags   Relevancy-0.171155 %84 %
61Leading Variations in H1 Tags   Relevancy-0.1711125 %81 %
62Number of No Follow Backlinks   Authority-0.175359845936 %31 %
63Number of Facebook Pages   Authority-0.1741360 %78 %
64Title Tag Has Entities   Relevancy-0.171166 %83 %
65Number of CSS Includes   Technology-0.1724971 %77 %
66LSI Words in Title Tag   Relevancy-0.1616558 %90 %
67Has JSON-LD Schema Markup   Relevancy-0.161154 %75 %
68Word Count   Size-0.16183483167983 %83 %
69Unabridged Word Count   Size-0.16183822205183 %83 %
70Search Result Number of Dirs in Path   Other-0.164271 %78 %
71Clean Text Kilobytes   Size-0.1624401578 %84 %
72Variations in H3 Tags   Relevancy-0.1636333 %84 %
73Variations in Main Tags   Relevancy-0.1654055235 %84 %
74Number of Instagram Pages   Authority-0.1622244 %79 %
75Number of HTML Tags   Size-0.163628104983 %83 %
76Number of Sentences   Size-0.1677612881 %83 %
77Variations in Section Tags   Relevancy-0.165101537 %84 %
78Percentage of DoFollow Internal Links   Authority-0.15957379 %85 %
79Percentage of DoFollow Links   Authority-0.151008479 %88 %
80Number of Images   Size-0.152823079 %82 %
81Variations making whole H1-H6 Tags   Relevancy-0.154114 %78 %
82Number of Images with ALT Text   Size-0.151922074 %84 %
83Variations in the last 100 words   Relevancy-0.15174343 %82 %
84Variations in Nav Tags   Relevancy-0.1535672344 %82 %
85LSI Words in Sentences   Relevancy-0.15304560959 %92 %
86Variations making whole H1, H2, and H3 Tags   Relevancy-0.152113 %78 %
87Number of P Tags   Size-0.153573978 %82 %
88Number of Heading Tags   Size-0.15572178 %82 %
89Variations in Footer Tags   Relevancy-0.152210933 %81 %
90Number of HTTPS Links   Authority-0.1547314479 %83 %
91Number of Internal Links   Authority-0.1549913278 %83 %
92Page Size Kilobytes   Size-0.15267226483 %84 %
93Inline CSS Kilobytes   Size-0.153726363 %83 %
94Number of DoFollow Links   Authority-0.1550614479 %83 %
95Number of Links   Authority-0.1550814879 %82 %
96Variations in TITLE Attributes   Relevancy-0.15129532 %81 %
97Flesch Kincaid Reading Grade Level   Other-0.156291 %87 %
98Number of JavaScript Includes   Technology-0.15591779 %79 %
99Leading Variations in H2 Tags   Relevancy-0.156120 %82 %
100Number of Questions   Size-0.151691166 %84 %
101Number of External Links   Authority-0.151161675 %80 %
102Number of Absolute URLs   Authority-0.15105425682 %82 %
103Exact Matches in H1-H6 Tags   Relevancy-0.1515118 %83 %
104Number Of JSON-LD Types   Relevancy-0.144461456 %81 %
105Meta Description Tag Has Entities   Relevancy-0.141155 %80 %
106Has Entities in H2 Tags   Relevancy-0.141153 %83 %
107Exact Matches in Top 30KB   Relevancy-0.1420217 %81 %
108Number of DoFollow External Links   Authority-0.141141474 %78 %
109Variations Making Whole LI Tags   Relevancy-0.146124 %76 %
110Number of Questions In Headings   Size-0.149237 %82 %
111Search Result Host Length   Size-0.14271783 %77 %
112Variations in Strong Tags   Relevancy-0.1429224 %82 %
113Number of H2 Tags   Size-0.1429770 %80 %
114Number of H3 Tags   Size-0.1443862 %82 %
115Number of US Phone Numbers   Trust-0.142061047 %78 %
116Search Result Domain Length   Size-0.14271783 %79 %
117Variations making whole A Tags   Relevancy-0.1419128 %77 %
118Number of Social Pages   Authority-0.1480565 %76 %
119Entities in H4 Tags-0.1415221 %82 %
120Exact Matches in Title Tag   Relevancy-0.142117 %81 %
121LSI Words in Meta Description Tag   Relevancy-0.1427948 %89 %
122Search Result URL Length   Size-0.14966493 %53 %
123Search Result Uses HTTPS   Other-0.141182 %81 %
124Word Count in Meta Description   Size-0.14522065 %77 %
125LSI Words in H1 Tags   Relevancy-0.1433451 %89 %
126Number of H1 Tags   Size-0.1412272 %81 %
127Inline JavaScript Kilobytes   Size-0.144677680 %81 %
128Exact Matches in Sentences   Relevancy-0.1435320 %86 %
129Meta Description Length   Size-0.1438911966 %78 %
130Number of HTML Comments   Size-0.145204373 %81 %
131Number of Facebook Accounts   Authority-0.149130 %76 %
132Has Meta Viewport   Technology-0.141180 %81 %
133Variations in Search Result Summary   Relevancy-0.1444272 %64 %
134Has Meta Charset   Technology-0.141175 %76 %
135Title Word Count   Size-0.1414880 %75 %
136Number of LinkedIn Pages   Authority-0.1320128 %74 %
137Variations in I Tags   Relevancy-0.13162423 %77 %
138Uses Schema name   Other-0.131160 %67 %
139Variations in Meta Twitter Content   Relevancy-0.132122 %70 %
140Headings Has Question   Other-0.131138 %75 %
141Variations Making Whole Span Tags   Relevancy-0.137118 %79 %
142Uses JSON-LD url   Other-0.131142 %69 %
143Uses JSON-LD name   Other-0.131151 %70 %
144Is Home Page   Other-0.131117 %36 %
145Has US Phone Number   Trust-0.131147 %69 %
146Has Canonical URL   Authority-0.131171 %76 %
147Number of Prices   Size-0.135366566 %84 %
148Uses Schema url   Other-0.131154 %64 %
149Has Meta Description   Relevancy-0.131165 %75 %
150Number of Questions In H2 Tags   Size-0.134123 %76 %
151Variations in Meta Twitter Description   Relevancy-0.134120 %73 %
152Has Entities in H3 Tags   Relevancy-0.131144 %83 %
153Has Privacy Policy   Trust-0.131155 %74 %
154Number of Twitter Accounts   Authority-0.134130 %69 %
155Percentage of DoFollow External Links   Authority-0.13331273 %77 %
156Has Schema Markup   Relevancy-0.131162 %72 %
157Number of Images without ALT Text   Size-0.13911060 %79 %
158Uses Schema website   Other-0.131136 %59 %
159Average Words Per Sentence   Size-0.133143580 %78 %
160Number of Nofollow Links   Authority-0.1340426 %76 %
161Title Length   Size-0.13885181 %76 %
162Uses Schema breadcrumblist   Other-0.131139 %65 %
163Uses JSON-LD description   Other-0.131140 %64 %
164Uses Schema listitem   Other-0.131139 %65 %
165Has OpenGraph Type   Relevancy-0.131160 %70 %
166Number of Social Accounts   Authority-0.1311246 %76 %
167Has FavIcon   Technology-0.131173 %78 %
168Variations making whole H1 Tags   Relevancy-0.13218 %79 %
169Number of H4 Tags   Size-0.1318438 %73 %
170Number of Forms   Technology-0.1318255 %72 %
171Variations in H4-H6 Tags   Relevancy-0.1328117 %74 %
172LSI Words in H2 Tags   Relevancy-0.13921649 %90 %
173Leading Variations in H3 Tags   Relevancy-0.136114 %79 %
174Variations in Article Tags   Relevancy-0.133131124 %71 %
175Uses Schema description   Other-0.131147 %60 %
176Uses JSON-LD image   Other-0.131116 %67 %
177Uses JSON-LD ListItem   Other-0.131135 %68 %
178Uses JSON-LD Audience   Other-0.13112 %11 %
179Uses JSON-LD HowToStep   Other-0.13112 %13 %
180Uses Schema howtostep   Other-0.13112 %13 %
181Is OpenGraph Type Article   Technology-0.121135 %60 %
182Number of Questions In H3 Tags   Size-0.125117 %79 %
183Uses Schema aggregaterating   Other-0.121110 %58 %
184Has Meta Twitter Card   Authority-0.121151 %63 %
185Uses Schema howto   Other-0.12112 %13 %
186Uses JSON-LD WebSite   Other-0.121132 %65 %
187Has Contact Page   Trust-0.121162 %69 %
188Uses JSON-LD HowTo   Other-0.12112 %13 %
189Number of NoFollow External Links   Authority-0.1215219 %76 %
190Percentage of NoFollow Links   Authority-0.1210224 %73 %
191Uses Schema organization   Other-0.121135 %61 %
192Uses JSON-LD BreadcrumbList   Other-0.121135 %69 %
193Number of Email Addresses   Trust-0.12291543 %78 %
194Has OpenGraph Image   Relevancy-0.121152 %66 %
195Uses Schema image   Other-0.121121 %61 %
196Number Of Claimed Brands   Other-0.12410523 %73 %
197Uses JSON-LD AggregateRating   Other-0.12118 %63 %
198Exact Matches in H1 Tags   Relevancy-0.122112 %79 %
199Variations in H4 Tags   Relevancy-0.1216113 %74 %
200Number of Meta Generator Tags   Technology-0.122135 %60 %