Measures 140380 SEO Factors

138658 Built-In SEO Factors

129760 On-page SEO Factors

8898 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 ( 54079 )
Relevancy SEO Factors ( 53425 )
Other SEO Factors ( 27768 )
Local SEO Factors ( 8725 )
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 ( 54075 )
Keywords SEO Factors ( 41373 )
Schema SEO Factors ( 27714 )
Local SEO Factors ( 8726 )
LSI SEO Factors ( 8486 )
Entities SEO Factors ( 3544 )
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 2025-04     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-0.2627778 %85 %
2Number of Unique LSI Words Used   Diversity-0.2587728483 %76 %
3Number of Top 200 Shared Factors Used   Diversity-0.24523995 %92 %
4Number of Top 100 Shared Factors Used   Diversity-0.24392995 %92 %
5Entities in Title Tag   Relevancy-0.237366 %89 %
6Number of Distinct Entities Used   Diversity-0.23732775 %91 %
7Search Result Domain is .com, .net, or .org   Other-0.23115 %78 %
8Number of Top 50 Shared Factors Used   Diversity-0.23161294 %89 %
9Search Result Domain is .com   Other-0.23115 %79 %
10Variations in Search Result Link Text   Relevancy-0.236274 %78 %
11Variations in Search Result Display URL   Relevancy-0.226274 %81 %
12Variations in Body Tags   Relevancy-0.228193637877 %88 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.22147664 %86 %
14Variations in HTML Tags   Relevancy-0.228193637576 %89 %
15Variations in H1-H6 Tags   Relevancy-0.22191765 %86 %
16Variations in the Title Tag   Relevancy-0.2215263 %82 %
17Variations in H1 and H2 Tags   Relevancy-0.2169461 %84 %
18Load Time Milliseconds   Performance-0.2117605162384 %91 %
19Variations in Div Tags   Relevancy-0.213061617473 %89 %
20Number of Factors Used   Diversity-0.2134518295 %88 %
21Variations in P Tags   Relevancy-0.2145553768 %88 %
22Variations in Sentences   Relevancy-0.2137764270 %88 %
23Term Frequency   Relevancy-0.216376 %87 %
24Clean Keyword Density in the HTML Tag   Relevancy-0.2185468 %78 %
25Variations in A Tags   Relevancy-0.233062867 %86 %
26Variations in H1 Tags   Relevancy-0.28153 %80 %
27Variations in LI Tags   Relevancy-0.1917262366 %87 %
28Entities in the HTML Tag   Relevancy-0.19146313370 %92 %
29Entities in Sentences   Relevancy-0.19124713069 %92 %
30Entities in H1 Tags-0.196255 %86 %
31Variations in Search Result Document File Name   Relevancy-0.199143 %80 %
32Variations in Search Result URL Path   Relevancy-0.199145 %81 %
33Variations in Search Result URL   Relevancy-0.1919252 %77 %
34Leading Variations in H1-H6 Tags   Relevancy-0.1929245 %84 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1922243 %84 %
36Variations in H2 Tags   Relevancy-0.1954347 %82 %
37Variations in First 100 Words   Relevancy-0.19177763 %85 %
38Variation Density in Top 30KB   Relevancy-0.19323358 %82 %
39LSI Words in Title Tag   Relevancy-0.1927563 %90 %
40Entities in H2 Tags-0.1934654 %88 %
41Variations in OpenGraph Title   Relevancy-0.1911150 %79 %
42Variations in Meta Description   Relevancy-0.1935253 %81 %
43Variation Count in Top 30KB   Relevancy-0.1854473566 %82 %
44Variations in the Canonical URL   Relevancy-0.1848249 %82 %
45TF/IDF   Relevancy-0.181157 %80 %
46Number of Includes   Technology-0.18592779 %76 %
47Number of Referring Domains   Authority-0.18149367745 %44 %
48Variations in OpenGraph Description   Relevancy-0.18121247 %78 %
49Variations in ALT Attributes   Relevancy-0.18200746 %82 %
50Variations in A Tag HREF Attributes   Relevancy-0.1832614460 %87 %
51Variations in Absolute URLs   Relevancy-0.1868226861 %88 %
52Variations in Distinct A Tag HREF Attributes   Relevancy-0.1720052961 %88 %
53Entities in Meta Description Tag   Relevancy-0.1756356 %85 %
54Variations in Script Tags   Relevancy-0.173126211061 %86 %
55Exact Matches in the HTML Tag   Relevancy-0.17463926 %83 %
56Number of Do Follow Backlinks   Authority-0.17448580506739 %43 %
57Variations in Span Tags   Relevancy-0.179131151 %84 %
58Number of No Follow Backlinks   Authority-0.173990146558735 %41 %
59Leading Variations in Title Tag   Relevancy-0.171130 %80 %
60Entities in H3 Tags-0.1764645 %89 %
61Number of Backlinks   Authority-0.174042261988543 %45 %
62Leading Variations in H1 Tags   Relevancy-0.173127 %82 %
63LSI Words in Sentences   Relevancy-0.17454268265 %93 %
64Number of HTML Tags   Size-0.163541104784 %84 %
65Variations in H3 Tags   Relevancy-0.1679335 %84 %
66Number of CSS Includes   Technology-0.16261072 %77 %
67Title Tag Has Entities   Relevancy-0.161165 %82 %
68Unabridged Word Count   Size-0.1618512191684 %84 %
69Search Result Number of Dirs in Path   Other-0.164272 %77 %
70Number of Sentences   Size-0.16177812582 %85 %
71Word Count   Size-0.1610647153584 %84 %
72Number of Facebook Pages   Authority-0.1639262 %77 %
73LSI Words in H1 Tags   Relevancy-0.1622556 %88 %
74Has Entities in H1 Tags   Relevancy-0.161155 %80 %
75Has JSON-LD Schema Markup   Relevancy-0.161155 %74 %
76Number of Images   Size-0.161803080 %83 %
77Variations in Nav Tags   Relevancy-0.1688054046 %81 %
78Variations in Main Tags   Relevancy-0.16126967936 %83 %
79Number of P Tags   Size-0.161994079 %82 %
80Variations in Footer Tags   Relevancy-0.1533111234 %79 %
81Clean Text Kilobytes   Size-0.151031380 %87 %
82Number of Images with ALT Text   Size-0.151772075 %86 %
83Number of Questions   Size-0.15641168 %84 %
84Variations in Section Tags   Relevancy-0.1516581938 %82 %
85Number of Links   Authority-0.1573714981 %80 %
86Page Size Kilobytes   Size-0.15104325783 %83 %
87Number of HTTPS Links   Authority-0.1572114880 %83 %
88Number of Absolute URLs   Authority-0.15104126183 %82 %
89Number of DoFollow Links   Authority-0.1566114681 %82 %
90Search Result Host Length   Size-0.15251883 %73 %
91Variations making whole H1-H6 Tags   Relevancy-0.157116 %77 %
92Exact Matches in H1-H6 Tags   Relevancy-0.1511117 %82 %
93Number of Internal Links   Authority-0.1559213580 %83 %
94Percentage of DoFollow Links   Authority-0.151008580 %85 %
95Variations making whole A Tags   Relevancy-0.1571229 %78 %
96Number of JavaScript Includes   Technology-0.15471880 %75 %
97Number of Heading Tags   Size-0.15872280 %82 %
98LSI Words in Meta Description Tag   Relevancy-0.15351052 %89 %
99Inline CSS Kilobytes   Size-0.152496265 %84 %
100Variations making whole H1, H2, and H3 Tags   Relevancy-0.153114 %77 %
101Variations in TITLE Attributes   Relevancy-0.15379634 %81 %
102Variations in the last 100 words   Relevancy-0.15175445 %80 %
103Percentage of DoFollow Internal Links   Authority-0.15937479 %85 %
104Leading Variations in H2 Tags   Relevancy-0.159122 %82 %
105Number Of JSON-LD Types   Relevancy-0.148171558 %83 %
106Number of H2 Tags   Size-0.1419771 %79 %
107Search Result Domain Length   Size-0.14251883 %76 %
108Variations Making Whole LI Tags   Relevancy-0.145124 %75 %
109Number of Instagram Pages   Authority-0.1418245 %75 %
110Number of H1 Tags   Size-0.144274 %79 %
111Number of Questions In Headings   Size-0.1410239 %82 %
112Flesch Kincaid Reading Grade Level   Other-0.146292 %84 %
113Number of External Links   Authority-0.141451677 %80 %
114Exact Matches in Title Tag   Relevancy-0.142115 %79 %
115Number of H3 Tags   Size-0.1430964 %80 %
116LSI Words in H2 Tags   Relevancy-0.141001955 %89 %
117Has Entities in H2 Tags   Relevancy-0.141153 %80 %
118Number of HTML Comments   Size-0.144934575 %81 %
119Variations in Strong Tags   Relevancy-0.1491226 %77 %
120Search Result URL Length   Size-0.141046395 %60 %
121Number of DoFollow External Links   Authority-0.14751476 %79 %
122Inline JavaScript Kilobytes   Size-0.145557081 %80 %
123Search Result Uses HTTPS   Other-0.141183 %82 %
124Number of US Phone Numbers   Trust-0.144481248 %81 %
125Has Meta Viewport   Technology-0.141181 %77 %
126Exact Matches in Top 30KB   Relevancy-0.1419115 %81 %
127Number of Prices   Size-0.149156368 %83 %
128Uses Schema aggregaterating   Other-0.141111 %58 %
129Variations Making Whole Span Tags   Relevancy-0.1415119 %77 %
130Title Word Count   Size-0.1421882 %75 %
131Uses Schema name   Other-0.131160 %70 %
132Uses Schema pricecurrency   Other-0.13118 %44 %
133Uses JSON-LD name   Other-0.131154 %71 %
134Uses JSON-LD priceCurrency   Other-0.13117 %43 %
135Uses Schema offer   Other-0.13117 %49 %
136Uses Schema availability   Other-0.13116 %36 %
137Uses Schema product   Other-0.13119 %54 %
138Exact Matches in Sentences   Relevancy-0.13103317 %83 %
139Variations making whole H1 Tags   Relevancy-0.13118 %75 %
140Number of Images without ALT Text   Size-0.131091060 %80 %
141Title Length   Size-0.131505282 %74 %
142Uses Schema price   Other-0.13116 %38 %
143Has Privacy Policy   Trust-0.131158 %74 %
144Meta Description Tag Has Entities   Relevancy-0.131155 %78 %
145Number of Forms   Technology-0.1320256 %75 %
146Word Count in Meta Description   Size-0.131182066 %74 %
147Entities in H4 Tags-0.1361221 %85 %
148Has Meta Charset   Technology-0.131177 %72 %
149Uses JSON-LD price   Other-0.13115 %35 %
150Has Schema Markup   Relevancy-0.131163 %74 %
151Has Entities in H3 Tags   Relevancy-0.131145 %80 %
152Number of Questions In H3 Tags   Size-0.135118 %80 %
153Has Canonical URL   Authority-0.131171 %74 %
154Number of Facebook Accounts   Authority-0.138131 %74 %
155Number of Nofollow Links   Authority-0.1376427 %77 %
156LSI Words in H3 Tags   Relevancy-0.131681948 %89 %
157Has Form   Technology-0.131155 %71 %
158Variations in Search Result Summary   Relevancy-0.1345274 %66 %
159Uses JSON-LD Offer   Other-0.13116 %50 %
160Headings Has Question   Other-0.131139 %74 %
161Uses JSON-LD Product   Other-0.13118 %55 %
162Variations in Meta Twitter Description   Relevancy-0.1311121 %72 %
163Has Meta Description   Relevancy-0.131166 %70 %
164Uses Schema description   Other-0.131146 %62 %
165Has FavIcon   Technology-0.131173 %75 %
166Variations in I Tags   Relevancy-0.13302424 %75 %
167Uses JSON-LD availability-0.13115 %36 %
168Number of Social Pages   Authority-0.1374466 %75 %
169Leading Variations in H3 Tags   Relevancy-0.1317116 %81 %
170Uses JSON-LD AggregateRating   Other-0.13119 %61 %
171Variations in Meta Twitter Content   Relevancy-0.1310123 %71 %
172Number of Questions In H2 Tags   Size-0.134124 %77 %
173Number of LinkedIn Pages   Authority-0.1318129 %72 %
174Uses JSON-LD ListItem   Other-0.131137 %67 %
175Has US Phone Number   Trust-0.131148 %71 %
176Uses JSON-LD BreadcrumbList   Other-0.131136 %67 %
177Number of Email Addresses   Trust-0.13507543 %75 %
178Has Contact Page   Trust-0.131164 %70 %
179Uses Schema geocircle   Other-0.12113 %18 %
180Uses Schema website   Other-0.121136 %60 %
181Is OpenGraph Type Article   Technology-0.121137 %57 %
182Variations in Article Tags   Relevancy-0.1215421323 %70 %
183Uses JSON-LD GeoCircle   Other-0.12113 %18 %
184Uses JSON-LD url   Other-0.121143 %68 %
185Percentage of DoFollow External Links   Authority-0.12321275 %74 %
186Uses JSON-LD description   Other-0.121143 %64 %
187Variations in H4-H6 Tags   Relevancy-0.1244218 %75 %
188Meta Description Length   Size-0.1285012267 %76 %
189Uses Schema url   Other-0.121155 %66 %
190Average Words Per Sentence   Size-0.122393481 %75 %
191Has OpenGraph Type   Relevancy-0.121161 %70 %
192Uses Schema breadcrumblist   Other-0.121140 %66 %
193Uses Schema image   Other-0.121122 %65 %
194Uses Schema listitem   Other-0.121140 %66 %
195Is Article Page   Other-0.121146 %62 %
196Uses Schema ratingvalue   Other-0.121111 %58 %
197Has OpenGraph Image   Relevancy-0.121152 %68 %
198Uses JSON-LD ratingValue   Other-0.12119 %57 %
199Uses Microdata ratingCount   Other-0.12112 %12 %
200Uses JSON-LD image   Other-0.121117 %67 %