Measures 140382 SEO Factors

138660 Built-In SEO Factors

129760 On-page SEO Factors

8900 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 ( 8727 )
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 ( 8728 )
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 %88 %
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-0.23114 %79 %
10Variations in Search Result Link Text   Relevancy-0.236274 %79 %
11Variations in Search Result Display URL   Relevancy-0.226274 %81 %
12Variations in Body Tags   Relevancy-0.228193639877 %88 %
13Variations in H1, H2, and H3 Tags   Relevancy-0.22147664 %86 %
14Variations in HTML Tags   Relevancy-0.228193639476 %89 %
15Variations in the Title Tag   Relevancy-0.2215263 %82 %
16Variations in H1-H6 Tags   Relevancy-0.22191865 %86 %
17Load Time Milliseconds   Performance-0.2117605161984 %91 %
18Variations in H1 and H2 Tags   Relevancy-0.2174461 %84 %
19Variations in Div Tags   Relevancy-0.213061618373 %89 %
20Number of Factors Used   Diversity-0.2134518195 %88 %
21Variations in P Tags   Relevancy-0.2145553768 %88 %
22Variations in Sentences   Relevancy-0.2137764370 %89 %
23Term Frequency   Relevancy-0.216376 %87 %
24Clean Keyword Density in the HTML Tag   Relevancy-0.2185468 %78 %
25Variations in A Tags   Relevancy-0.233062967 %86 %
26Variations in H1 Tags   Relevancy-0.28153 %80 %
27Variations in LI Tags   Relevancy-0.1917262366 %87 %
28Entities in H1 Tags-0.197255 %86 %
29Entities in the HTML Tag   Relevancy-0.19146313370 %92 %
30Variations in Search Result Document File Name   Relevancy-0.199143 %80 %
31Entities in Sentences   Relevancy-0.19124713069 %92 %
32Variations in Search Result URL Path   Relevancy-0.199145 %82 %
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-0.1964347 %82 %
37Variations in First 100 Words   Relevancy-0.19178763 %85 %
38Variation Density in Top 30KB   Relevancy-0.19323358 %82 %
39LSI Words in Title Tag   Relevancy-0.1927563 %90 %
40Entities in H2 Tags-0.1935654 %88 %
41Variations in OpenGraph Title   Relevancy-0.1911151 %79 %
42Variations in Meta Description   Relevancy-0.1942253 %81 %
43Variation Count in Top 30KB   Relevancy-0.1854473866 %82 %
44Variations in the Canonical URL   Relevancy-0.1848249 %82 %
45TF/IDF   Relevancy-0.181157 %80 %
46Number of Includes   Technology-0.18592679 %76 %
47Number of Referring Domains   Authority-0.18149367745 %43 %
48Variations in OpenGraph Description   Relevancy-0.18121247 %78 %
49Variations in ALT Attributes   Relevancy-0.18200746 %82 %
50Variations in A Tag HREF Attributes   Relevancy-0.1832614561 %87 %
51Variations in Absolute URLs   Relevancy-0.1868227061 %88 %
52Variations in Distinct A Tag HREF Attributes   Relevancy-0.1720052961 %87 %
53Entities in Meta Description Tag   Relevancy-0.1756356 %85 %
54Variations in Script Tags   Relevancy-0.173126211261 %86 %
55Exact Matches in the HTML Tag   Relevancy-0.17463926 %83 %
56Number of Do Follow Backlinks   Authority-0.17448580506739 %43 %
57Leading Variations in Title Tag   Relevancy-0.171130 %80 %
58Number of No Follow Backlinks   Authority-0.173990146558735 %40 %
59Variations in Span Tags   Relevancy-0.179131151 %84 %
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-0.17454268465 %93 %
64Number of HTML Tags   Size-0.163541104684 %84 %
65Variations in H3 Tags   Relevancy-0.1679335 %84 %
66Number of CSS Includes   Technology-0.16261072 %77 %
67Title Tag Has Entities   Relevancy-0.161165 %81 %
68Unabridged Word Count   Size-0.1618512191884 %84 %
69Search Result Number of Dirs in Path   Other-0.164272 %77 %
70Number of Sentences   Size-0.16177812582 %85 %
71Word Count   Size-0.1610647153884 %83 %
72LSI Words in H1 Tags   Relevancy-0.1622556 %88 %
73Number of Facebook Pages   Authority-0.1639262 %77 %
74Has Entities in H1 Tags   Relevancy-0.161156 %80 %
75Has JSON-LD Schema Markup   Relevancy-0.161155 %74 %
76Number of Images   Size-0.161803080 %83 %
77Number of P Tags   Size-0.161994079 %82 %
78Variations in Nav Tags   Relevancy-0.1688054246 %81 %
79Variations in Main Tags   Relevancy-0.16126967836 %83 %
80Clean Text Kilobytes   Size-0.151031380 %87 %
81Variations in Footer Tags   Relevancy-0.1533111234 %78 %
82Number of Images with ALT Text   Size-0.151772075 %86 %
83Number of Questions   Size-0.15641168 %84 %
84Number of Links   Authority-0.1573714981 %80 %
85Variations in Section Tags   Relevancy-0.1516581938 %82 %
86Page Size Kilobytes   Size-0.15104325784 %83 %
87Exact Matches in H1-H6 Tags   Relevancy-0.1511117 %82 %
88Number of HTTPS Links   Authority-0.1572114880 %83 %
89Number of Absolute URLs   Authority-0.15104126183 %82 %
90Number of DoFollow Links   Authority-0.1566114681 %82 %
91Variations making whole H1-H6 Tags   Relevancy-0.157116 %77 %
92Search Result Host Length   Size-0.15251883 %74 %
93Number of Internal Links   Authority-0.1559213580 %83 %
94Variations making whole A Tags   Relevancy-0.1571229 %78 %
95Percentage of DoFollow Links   Authority-0.151008580 %85 %
96Number of JavaScript Includes   Technology-0.15471880 %75 %
97Number of Heading Tags   Size-0.15872280 %81 %
98Inline CSS Kilobytes   Size-0.152496265 %84 %
99LSI Words in Meta Description Tag   Relevancy-0.15351052 %89 %
100Variations making whole H1, H2, and H3 Tags   Relevancy-0.153114 %77 %
101Leading Variations in H2 Tags   Relevancy-0.159122 %82 %
102Variations in the last 100 words   Relevancy-0.15180445 %80 %
103Variations in TITLE Attributes   Relevancy-0.15379634 %81 %
104Percentage of DoFollow Internal Links   Authority-0.15937480 %84 %
105Number Of JSON-LD Types   Relevancy-0.148171558 %83 %
106Variations Making Whole LI Tags   Relevancy-0.145124 %75 %
107Search Result Domain Length   Size-0.14251883 %76 %
108Number of H2 Tags   Size-0.1419771 %79 %
109Exact Matches in Title Tag   Relevancy-0.142115 %79 %
110Number of Instagram Pages   Authority-0.1418245 %75 %
111Number of Questions In Headings   Size-0.1410239 %82 %
112Number of H1 Tags   Size-0.144274 %79 %
113Flesch Kincaid Reading Grade Level   Other-0.146292 %84 %
114Number of External Links   Authority-0.141451677 %79 %
115Has Entities in H2 Tags   Relevancy-0.141154 %80 %
116Number of H3 Tags   Size-0.1430964 %80 %
117LSI Words in H2 Tags   Relevancy-0.141001955 %89 %
118Number of HTML Comments   Size-0.144934675 %81 %
119Variations in Strong Tags   Relevancy-0.1491226 %77 %
120Exact Matches in Top 30KB   Relevancy-0.1419115 %81 %
121Search Result URL Length   Size-0.141046395 %60 %
122Number of DoFollow External Links   Authority-0.14751476 %79 %
123Inline JavaScript Kilobytes   Size-0.145557081 %80 %
124Search Result Uses HTTPS   Other-0.141183 %81 %
125Number of US Phone Numbers   Trust-0.144481248 %81 %
126Uses Schema aggregaterating   Other-0.141111 %58 %
127Has Meta Viewport   Technology-0.141181 %76 %
128Variations Making Whole Span Tags   Relevancy-0.1415119 %77 %
129Number of Prices   Size-0.149156368 %83 %
130Uses Schema name   Other-0.141160 %70 %
131Title Word Count   Size-0.1321882 %75 %
132Uses JSON-LD name   Other-0.131154 %71 %
133Uses Schema pricecurrency   Other-0.13118 %44 %
134Exact Matches in Sentences   Relevancy-0.13103317 %83 %
135Uses Schema product   Other-0.13119 %54 %
136Uses JSON-LD priceCurrency   Other-0.13117 %44 %
137Uses Schema availability   Other-0.13116 %37 %
138Uses Schema offer   Other-0.13117 %49 %
139Number of Images without ALT Text   Size-0.131091060 %80 %
140Title Length   Size-0.131505282 %74 %
141Variations making whole H1 Tags   Relevancy-0.13118 %75 %
142Has Privacy Policy   Trust-0.131158 %74 %
143Entities in H4 Tags-0.1361221 %84 %
144Meta Description Tag Has Entities   Relevancy-0.131155 %77 %
145Uses Schema price   Other-0.13116 %38 %
146Number of Forms   Technology-0.1320256 %75 %
147Has Entities in H3 Tags   Relevancy-0.131145 %79 %
148Has Canonical URL   Authority-0.131171 %74 %
149Has Schema Markup   Relevancy-0.131163 %74 %
150Number of Questions In H3 Tags   Size-0.135118 %80 %
151Word Count in Meta Description   Size-0.131182066 %73 %
152Has Meta Charset   Technology-0.131177 %72 %
153Number of Facebook Accounts   Authority-0.138131 %74 %
154Uses JSON-LD price   Other-0.13115 %35 %
155LSI Words in H3 Tags   Relevancy-0.131681948 %89 %
156Number of Nofollow Links   Authority-0.1376427 %77 %
157Has Form   Technology-0.131155 %71 %
158Uses JSON-LD Product   Other-0.13118 %55 %
159Variations in Meta Twitter Description   Relevancy-0.1324121 %72 %
160Headings Has Question   Other-0.131139 %74 %
161Variations in Search Result Summary   Relevancy-0.1345274 %65 %
162Has FavIcon   Technology-0.131173 %75 %
163Number of Social Pages   Authority-0.1374467 %75 %
164Has Meta Description   Relevancy-0.131166 %70 %
165Uses Schema description   Other-0.131146 %61 %
166Variations in I Tags   Relevancy-0.13302424 %75 %
167Uses JSON-LD AggregateRating-0.13119 %61 %
168Uses JSON-LD availability-0.13115 %37 %
169Variations in Meta Twitter Content   Relevancy-0.1310123 %71 %
170Uses JSON-LD Offer   Other-0.13116 %50 %
171Number of LinkedIn Pages   Authority-0.1318129 %72 %
172Leading Variations in H3 Tags   Relevancy-0.1317116 %81 %
173Number of Questions In H2 Tags   Size-0.134124 %77 %
174Uses JSON-LD ListItem   Other-0.131137 %66 %
175Has US Phone Number   Trust-0.131148 %71 %
176Number of Email Addresses   Trust-0.13507543 %75 %
177Uses JSON-LD BreadcrumbList   Other-0.131136 %67 %
178Has Contact Page   Trust-0.121164 %70 %
179Variations in Article Tags   Relevancy-0.1215421324 %70 %
180Uses Schema website   Other-0.121137 %60 %
181Uses JSON-LD url   Other-0.121144 %68 %
182Uses Schema geocircle   Other-0.12113 %18 %
183Is OpenGraph Type Article   Technology-0.121137 %57 %
184Variations in H4-H6 Tags   Relevancy-0.1244218 %75 %
185Uses JSON-LD description   Other-0.121143 %64 %
186Uses Schema url   Other-0.121155 %66 %
187Percentage of DoFollow External Links   Authority-0.12321275 %74 %
188Uses JSON-LD GeoCircle   Other-0.12113 %18 %
189Average Words Per Sentence   Size-0.122393481 %75 %
190Meta Description Length   Size-0.1285012267 %76 %
191Has OpenGraph Type   Relevancy-0.121161 %70 %
192Uses Schema image   Other-0.121122 %65 %
193Uses Schema ratingvalue   Other-0.121111 %57 %
194Uses JSON-LD ratingValue   Other-0.12119 %57 %
195Uses Schema breadcrumblist   Other-0.121140 %66 %
196Uses Schema listitem   Other-0.121140 %66 %
197Uses JSON-LD image   Other-0.121117 %67 %
198Uses JSON-LD HowTo   Other-0.12112 %15 %
199Has OpenGraph Image   Relevancy-0.121153 %68 %
200Number of H4 Tags   Size-0.1280439 %75 %