Measures 140363 SEO Factors

138641 Built-In SEO Factors

129743 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 ( 27756 )
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 ( 27702 )
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-0.2622778 %86 %
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-0.247365 %89 %
6Number of Distinct Entities Used   Diversity-0.23732775 %92 %
7Search Result Domain is .com, .net, or .org   Other-0.23115 %79 %
8Number of Top 50 Shared Factors Used   Diversity-0.23161294 %89 %
9Search Result Domain is .com   Other-0.23115 %80 %
10Variations in Search Result Link Text   Relevancy-0.226274 %79 %
11Variations in Search Result Display URL   Relevancy-0.226274 %81 %
12Variations in Body Tags   Relevancy-0.228193638677 %89 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.22147664 %87 %
14Variations in HTML Tags   Relevancy-0.228193638377 %90 %
15Variations in H1-H6 Tags   Relevancy-0.22191865 %86 %
16Variations in the Title Tag   Relevancy-0.2215263 %83 %
17Load Time Milliseconds   Performance-0.2217605163884 %91 %
18Variations in H1 and H2 Tags   Relevancy-0.2269461 %85 %
19Variations in Div Tags   Relevancy-0.213061617873 %90 %
20Number of Factors Used   Diversity-0.2134518295 %88 %
21Variations in P Tags   Relevancy-0.2145553768 %88 %
22Variations in Sentences   Relevancy-0.2137764370 %89 %
23Term Frequency   Relevancy-0.216376 %88 %
24Clean Keyword Density in the HTML Tag   Relevancy-0.2185468 %79 %
25Variations in A Tags   Relevancy-0.233062967 %86 %
26Variations in H1 Tags   Relevancy-0.28153 %81 %
27Variations in Search Result Document File Name   Relevancy-0.29143 %80 %
28Entities in the HTML Tag   Relevancy-0.2146313371 %92 %
29Variations in Search Result URL Path   Relevancy-0.199145 %81 %
30Entities in Sentences   Relevancy-0.19124713070 %93 %
31Variations in LI Tags   Relevancy-0.1917262366 %88 %
32Variations in Search Result URL   Relevancy-0.1919252 %77 %
33Entities in H1 Tags-0.196255 %87 %
34Variations in First 100 Words   Relevancy-0.19177763 %85 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1922243 %84 %
36Variations in H2 Tags   Relevancy-0.1954347 %83 %
37Leading Variations in H1-H6 Tags   Relevancy-0.1929245 %85 %
38Variation Density in Top 30KB   Relevancy-0.19323358 %82 %
39LSI Words in Title Tag   Relevancy-0.1914563 %91 %
40Entities in H2 Tags-0.1934654 %89 %
41Variations in Meta Description   Relevancy-0.1935253 %81 %
42Variations in OpenGraph Title   Relevancy-0.1911151 %80 %
43Variation Count in Top 30KB   Relevancy-0.1854473666 %82 %
44Variations in the Canonical URL   Relevancy-0.1848249 %83 %
45Number of Includes   Technology-0.18522779 %77 %
46TF/IDF   Relevancy-0.181157 %81 %
47Number of Referring Domains   Authority-0.18149367745 %46 %
48Variations in OpenGraph Description   Relevancy-0.18121247 %78 %
49Variations in ALT Attributes   Relevancy-0.18200746 %83 %
50Variations in A Tag HREF Attributes   Relevancy-0.1832614561 %88 %
51Variations in Absolute URLs   Relevancy-0.1868226961 %89 %
52Variations in Distinct A Tag HREF Attributes   Relevancy-0.1720052961 %88 %
53Variations in Script Tags   Relevancy-0.173126211361 %86 %
54Entities in Meta Description Tag   Relevancy-0.1756356 %86 %
55Exact Matches in the HTML Tag   Relevancy-0.17463926 %83 %
56Number of Do Follow Backlinks   Authority-0.17448580506739 %45 %
57Variations in Span Tags   Relevancy-0.179131151 %85 %
58Leading Variations in Title Tag   Relevancy-0.171131 %80 %
59Entities in H3 Tags-0.1764645 %90 %
60Number of Backlinks   Authority-0.174042261998343 %47 %
61Number of No Follow Backlinks   Authority-0.173990146558735 %43 %
62Leading Variations in H1 Tags   Relevancy-0.173127 %81 %
63LSI Words in Sentences   Relevancy-0.17454268865 %93 %
64Number of CSS Includes   Technology-0.16261072 %77 %
65Number of HTML Tags   Size-0.163541105084 %84 %
66Title Tag Has Entities   Relevancy-0.161165 %82 %
67Variations in H3 Tags   Relevancy-0.1679335 %84 %
68Search Result Number of Dirs in Path   Other-0.164272 %77 %
69Number of Facebook Pages   Authority-0.1639262 %77 %
70Has JSON-LD Schema Markup   Relevancy-0.161155 %74 %
71Unabridged Word Count   Size-0.1618512192484 %85 %
72Number of Sentences   Size-0.16109512583 %86 %
73LSI Words in H1 Tags   Relevancy-0.1622557 %89 %
74Has Entities in H1 Tags   Relevancy-0.161155 %81 %
75Word Count   Size-0.1610647154084 %84 %
76Number of Images   Size-0.161803080 %83 %
77Variations in Nav Tags   Relevancy-0.1688054146 %82 %
78Number of P Tags   Size-0.161994079 %82 %
79Variations in Footer Tags   Relevancy-0.1533111233 %79 %
80Clean Text Kilobytes   Size-0.151031380 %87 %
81Variations in Main Tags   Relevancy-0.15126968136 %83 %
82Number of Images with ALT Text   Size-0.151772075 %86 %
83Number of Questions   Size-0.15541168 %85 %
84Variations in Section Tags   Relevancy-0.1516581938 %83 %
85Number of Links   Authority-0.1573715081 %80 %
86Number of HTTPS Links   Authority-0.1572114881 %83 %
87Number of Absolute URLs   Authority-0.15102126283 %82 %
88Number of DoFollow Links   Authority-0.1566114681 %82 %
89Page Size Kilobytes   Size-0.15104325784 %84 %
90Search Result Host Length   Size-0.15251883 %74 %
91Percentage of DoFollow Links   Authority-0.151008580 %85 %
92Number of Internal Links   Authority-0.1559213580 %83 %
93Variations making whole H1-H6 Tags   Relevancy-0.157116 %77 %
94Variations making whole A Tags   Relevancy-0.1571229 %78 %
95Number of JavaScript Includes   Technology-0.15421880 %76 %
96Exact Matches in H1-H6 Tags   Relevancy-0.1511117 %82 %
97Number of Heading Tags   Size-0.15872280 %82 %
98Inline CSS Kilobytes   Size-0.152496265 %84 %
99Variations in the last 100 words   Relevancy-0.15175445 %80 %
100Percentage of DoFollow Internal Links   Authority-0.15937480 %84 %
101Variations making whole H1, H2, and H3 Tags   Relevancy-0.153114 %77 %
102Search Result Domain Length   Size-0.15251883 %76 %
103Leading Variations in H2 Tags   Relevancy-0.159122 %82 %
104LSI Words in Meta Description Tag   Relevancy-0.15351053 %89 %
105Number Of JSON-LD Types   Relevancy-0.158171558 %83 %
106Variations in TITLE Attributes   Relevancy-0.15379634 %81 %
107Number of H2 Tags   Size-0.1419771 %79 %
108Variations Making Whole LI Tags   Relevancy-0.145124 %75 %
109Number of Instagram Pages   Authority-0.1418245 %75 %
110Number of External Links   Authority-0.141451677 %80 %
111Number of Questions In Headings   Size-0.1410239 %82 %
112Flesch Kincaid Reading Grade Level   Other-0.146292 %84 %
113Has Entities in H2 Tags   Relevancy-0.141153 %81 %
114Number of H1 Tags   Size-0.144274 %80 %
115LSI Words in H2 Tags   Relevancy-0.141001955 %89 %
116Number of H3 Tags   Size-0.1430964 %81 %
117Exact Matches in Title Tag   Relevancy-0.142115 %80 %
118Number of HTML Comments   Size-0.144934575 %81 %
119Number of DoFollow External Links   Authority-0.14751476 %79 %
120Search Result URL Length   Size-0.141046394 %61 %
121Search Result Uses HTTPS   Other-0.141183 %82 %
122Variations in Strong Tags   Relevancy-0.1491226 %78 %
123Inline JavaScript Kilobytes   Size-0.144867081 %80 %
124Has Meta Viewport   Technology-0.141181 %77 %
125Exact Matches in Top 30KB   Relevancy-0.1419115 %81 %
126Title Word Count   Size-0.1417882 %75 %
127Number of US Phone Numbers   Trust-0.144481248 %81 %
128Uses Schema aggregaterating   Other-0.141111 %59 %
129Number of Prices   Size-0.149156368 %83 %
130Uses Schema name   Other-0.141160 %71 %
131Variations Making Whole Span Tags   Relevancy-0.1415119 %78 %
132Uses Schema pricecurrency   Other-0.14118 %44 %
133Uses JSON-LD name   Other-0.131154 %71 %
134Uses JSON-LD priceCurrency   Other-0.13117 %44 %
135Title Length   Size-0.131285282 %74 %
136Uses Schema offer   Other-0.13117 %50 %
137Uses Schema product   Other-0.13119 %54 %
138Has Privacy Policy   Trust-0.131158 %74 %
139Uses Schema availability   Other-0.13116 %37 %
140Number of Images without ALT Text   Size-0.131091060 %80 %
141Exact Matches in Sentences   Relevancy-0.13103317 %84 %
142Uses Schema price   Other-0.13116 %38 %
143Variations making whole H1 Tags   Relevancy-0.13118 %76 %
144Has Schema Markup   Relevancy-0.131163 %74 %
145Has Canonical URL   Authority-0.131171 %74 %
146Meta Description Tag Has Entities   Relevancy-0.131155 %78 %
147Number of Facebook Accounts   Authority-0.138131 %73 %
148Number of Questions In H3 Tags   Size-0.135118 %81 %
149Has Meta Charset   Technology-0.131177 %73 %
150Uses JSON-LD price   Other-0.13115 %35 %
151Has Entities in H3 Tags   Relevancy-0.131145 %80 %
152Word Count in Meta Description   Size-0.131182066 %74 %
153Number of Forms   Technology-0.1320256 %75 %
154Number of Nofollow Links   Authority-0.1376427 %76 %
155Entities in H4 Tags-0.1361221 %86 %
156Has FavIcon   Technology-0.131173 %76 %
157Variations in Search Result Summary   Relevancy-0.1345274 %65 %
158LSI Words in H3 Tags   Relevancy-0.131682048 %89 %
159Number of Social Pages   Authority-0.1374466 %75 %
160Has Form   Technology-0.131155 %71 %
161Uses JSON-LD Offer   Other-0.13116 %51 %
162Uses Schema description   Other-0.131146 %62 %
163Headings Has Question   Other-0.131139 %75 %
164Uses JSON-LD Product   Other-0.13118 %55 %
165Has Contact Page   Trust-0.131164 %70 %
166Number of LinkedIn Pages   Authority-0.1318129 %72 %
167Is OpenGraph Type Article   Technology-0.131137 %58 %
168Has Meta Description   Relevancy-0.131166 %70 %
169Variations in I Tags   Relevancy-0.13302424 %75 %
170Number of Email Addresses   Trust-0.13507543 %75 %
171Leading Variations in H3 Tags   Relevancy-0.1317116 %81 %
172Variations in Meta Twitter Description   Relevancy-0.1311121 %72 %
173Uses JSON-LD ListItem   Other-0.131137 %67 %
174Uses JSON-LD availability-0.13115 %37 %
175Has US Phone Number   Trust-0.131148 %71 %
176Uses JSON-LD BreadcrumbList   Other-0.131136 %68 %
177Uses JSON-LD AggregateRating   Other-0.13119 %62 %
178Number of Questions In H2 Tags   Size-0.134124 %77 %
179Variations in Meta Twitter Content   Relevancy-0.1310123 %71 %
180Has OpenGraph Type   Relevancy-0.131161 %70 %
181Uses Schema website   Other-0.131136 %61 %
182Uses Schema geocircle   Other-0.13113 %18 %
183Uses JSON-LD GeoCircle   Other-0.12113 %18 %
184Average Words Per Sentence   Size-0.122393481 %76 %
185Percentage of DoFollow External Links   Authority-0.12321275 %74 %
186Is Article Page   Other-0.121146 %62 %
187Meta Description Length   Size-0.1285012267 %75 %
188Uses JSON-LD description   Other-0.121143 %65 %
189Uses JSON-LD url   Other-0.121143 %69 %
190Variations in Article Tags   Relevancy-0.1215421323 %71 %
191Has OpenGraph Image   Relevancy-0.121152 %68 %
192Uses Schema url   Other-0.121155 %67 %
193Uses Schema breadcrumblist   Other-0.121140 %67 %
194Uses Schema listitem   Other-0.121140 %67 %
195Variations in H4-H6 Tags   Relevancy-0.1244218 %75 %
196Uses JSON-LD HowTo   Other-0.12112 %15 %
197Uses Schema ratingvalue   Other-0.121111 %59 %
198Number of Twitter Accounts   Authority-0.123129 %69 %
199Uses Schema image   Other-0.121122 %66 %
200Uses Schema howto   Other-0.12112 %15 %