Measures 143207 SEO Factors

141485 Built-In SEO Factors

132417 On-page SEO Factors

9068 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 2020-11     previous - today - next

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

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Distinct Entities Used   Diversity-0.39653085 %47 %
2Variations in HTML Tags   Relevancy-0.380917287 %95 %
3Term Frequency   Relevancy-0.298687 %94 %
4Entities in Title Tag   Relevancy-0.299371 %46 %
5Variations in Div Tags   Relevancy-0.2860212485 %94 %
6Entities in H2 Tags-0.281802148 %47 %
7Variations in A Tags   Relevancy-0.281653278 %94 %
8Variations in H1-H6 Tags   Relevancy-0.27661177 %93 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2765976 %93 %
10Variations in H1 and H2 Tags   Relevancy-0.2764673 %92 %
11Variations in Search Result Display URL   Relevancy-0.264282 %81 %
12Variations in Search Result Link Text   Relevancy-0.264282 %81 %
13Variations in Body Tags   Relevancy-0.2650114378 %94 %
14Variations in A Tag HREF Attributes   Relevancy-0.255215268 %94 %
15Number of Factors Used   Diversity-0.2519713193 %89 %
16Keywords in pages top 10 most used phrases-0.255262 %88 %
17Variations in Span Tags   Relevancy-0.24801459 %91 %
18Variations in Sentences   Relevancy-0.241041973 %92 %
19Variations in ALT Attributes   Relevancy-0.24801355 %91 %
20Variations in the Title Tag   Relevancy-0.244277 %82 %
21LSI Words in Sentences   Relevancy-0.24325053275 %96 %
22Page Size Kilobytes   Size-0.2470516993 %89 %
23Number of HTML Tags   Size-0.24251799394 %87 %
24Ahrefs Rank   Authority-0.23551686 %19 %
25Title Tag Has Entities   Relevancy-0.231171 %41 %
26Variations in LI Tags   Relevancy-0.23972069 %94 %
27Variations in Search Result URL Path   Relevancy-0.235261 %80 %
28Variations in Search Result URL   Relevancy-0.235258 %84 %
29TF/IDF   Relevancy-0.231166 %82 %
30Variations in P Tags   Relevancy-0.231973474 %92 %
31Ahrefs Referring IP Addresses   Authority-0.2216726255 %24 %
32Ahrefs Referring Class C Addresses   Authority-0.2211504955 %24 %
33Keywords in pages top 5 most used phrases-0.224152 %89 %
34Ahrefs Referring Domains   Authority-0.2221187255 %24 %
35Number of Internal Links   Authority-0.2250314388 %80 %
36Variations in H2 Tags   Relevancy-0.2264546 %91 %
37Leading Variations in H1, H2, and H3 Tags   Relevancy-0.2215247 %88 %
38Leading Variations in H1-H6 Tags   Relevancy-0.2216350 %89 %
39Number of DoFollow Links   Authority-0.2251215488 %78 %
40Has Entities in H2 Tags   Relevancy-0.221150 %43 %
41Search Result Publish Date-0.222000263841179207777185 %33 %
42Ahrefs Domain Rating   Authority-0.21834883 %19 %
43Ahrefs Backlinks   Authority-0.21373165521656 %24 %
44Ahrefs Referring Pages   Authority-0.21373165521656 %24 %
45Ahrefs Text Backlinks   Authority-0.21373077519555 %24 %
46Body Tag Size Kilobytes   Size-0.214279678 %90 %
47Entities in H1 Tags-0.219355 %44 %
48Number of Links   Authority-0.2152616288 %81 %
49LSI Words in Title Tag   Relevancy-0.2118671 %92 %
50Number of HTTPS Links   Authority-0.2152315186 %86 %
51Variations in Search Result Document File Name   Relevancy-0.214257 %71 %
52Entities in Meta Description Tag   Relevancy-0.219354 %43 %
53Variations in Script Tags   Relevancy-0.212042862 %94 %
54Number of Sentences   Size-0.21814688 %87 %
55Ahrefs NoFollow Backlinks   Authority-0.22007945946 %23 %
56Has Entities in H1 Tags   Relevancy-0.21158 %39 %
57Ahrefs Dofollow Backlinks   Authority-0.2366144480947 %23 %
58Clean Text Kilobytes   Size-0.2381288 %88 %
59Load Time Milliseconds   Performance-0.246962437693 %70 %
60Variations in H1 Tags   Relevancy-0.23263 %79 %
61Inline JavaScript Kilobytes   Size-0.23024188 %86 %
62Keywords in pages top 3 most used phrases-0.23142 %88 %
63Variations in I Tags   Relevancy-0.223429 %85 %
64Unabridged Word Count   Size-0.26989190292 %89 %
65Number of Images with ALT Text   Size-0.19642081 %85 %
66Exact Matches in Body Tag   Relevancy-0.192211339 %94 %
67Variations in Absolute URLs   Relevancy-0.192663762 %90 %
68Ahrefs Has Dofollow Backlinks   Authority-0.191143 %22 %
69Variations in Meta Description   Relevancy-0.195258 %85 %
70Word Count   Size-0.195147150192 %88 %
71Number of Images   Size-0.19873288 %85 %
72Exact Matches in the HTML Tag   Relevancy-0.192301140 %93 %
73Number of H2 Tags   Size-0.1926772 %86 %
74Ahrefs Has Text Backlinks   Authority-0.191151 %23 %
75Has US Phone Number   Trust-0.181135 %62 %
76Variations in TITLE Attributes   Relevancy-0.181241441 %87 %
77Number of Forms   Technology-0.1812370 %74 %
78Leading Variations in H2 Tags   Relevancy-0.1813121 %85 %
79LSI Words in H2 Tags   Relevancy-0.187533653 %94 %
80Ahrefs Has NoFollow Backlinks   Authority-0.181143 %23 %
81Entities in H3 Tags-0.1830541 %39 %
82Ahrefs Has Backlinks   Authority-0.181152 %23 %
83Variations in the Canonical URL   Relevancy-0.184247 %81 %
84Variations in First 100 Words   Relevancy-0.1829764 %83 %
85Variations Making Whole Span Tags   Relevancy-0.188120 %84 %
86Number of Absolute URLs   Authority-0.1842714791 %81 %
87Number of Heading Tags   Size-0.17482389 %85 %
88Leading Variations in H1 Tags   Relevancy-0.172132 %76 %
89Variations Making Whole LI Tags   Relevancy-0.175123 %79 %
90Search Result Uses HTTPS   Other-0.171184 %77 %
91Percentage of DoFollow Internal Links   Authority-0.17957987 %69 %
92Search Result Has Params   Other-0.17116 %54 %
93Exact Matches in H1-H6 Tags   Relevancy-0.1714230 %91 %
94Inline CSS Kilobytes   Size-0.172173460 %84 %
95Number of Questions In H2 Tags   Size-0.173119 %80 %
96Leading Variations in Title Tag   Relevancy-0.171137 %70 %
97Head Size Kilobytes   Size-0.171634286 %84 %
98Variations in Value Attributes   Relevancy-0.1631213 %80 %
99Number of US Phone Numbers   Trust-0.16145635 %75 %
100LSI Words in H1 Tags   Relevancy-0.1618561 %89 %
101Variations in OpenGraph Title   Relevancy-0.164257 %69 %
102Variations in the last 100 words   Relevancy-0.1616451 %81 %
103Has Entities in H5 Tags   Relevancy-0.161110 %35 %
104Entities in H4 Tags-0.1618222 %42 %
105Entities in the HTML Tag   Relevancy-0.16237728239 %97 %
106Variations in H3 Tags   Relevancy-0.1521438 %83 %
107Variations making whole A Tags   Relevancy-0.155232 %77 %
108LSI Words in Meta Description Tag   Relevancy-0.15371054 %89 %
109Meta Description Tag Has Entities   Relevancy-0.151156 %38 %
110Number of HTML Comments   Size-0.151262976 %72 %
111Entities in Sentences   Relevancy-0.154045938 %98 %
112Exact Matches in A Tags   Relevancy-0.1545326 %91 %
113Percentage of DoFollow Links   Authority-0.151009187 %67 %
114Search Result Number of Dirs in Path   Other-0.154282 %65 %
115Exact Matches in Title Tag   Relevancy-0.152129 %87 %
116Number of P Tags   Size-0.152114089 %74 %
117Number of Questions In Headings   Size-0.156233 %83 %
118Number of Questions   Size-0.1527562 %80 %
119Variations in OpenGraph Description   Relevancy-0.157250 %71 %
120Variations in Nav Tags   Relevancy-0.151951543 %78 %
121Number of Images without ALT Text   Size-0.151111370 %77 %
122Variations in Form Tags   Relevancy-0.154111 %78 %
123Entities in H5 Tags-0.15619 %38 %
124Variations in Section Tags   Relevancy-0.14761735 %77 %
125Average Words Per Sentence   Size-0.142114889 %69 %
126Variations in Main Tags   Relevancy-0.142244329 %76 %
127Keywords in pages most used phrase-0.141120 %79 %
128Variations in Meta Keywords   Relevancy-0.144118 %69 %
129Number of External Links   Authority-0.14691983 %80 %
130Number of DoFollow External Links   Authority-0.14391680 %78 %
131Headings Has Question   Other-0.141133 %78 %
132Variations in Strong Tags   Relevancy-0.1420435 %80 %
133Has Form   Technology-0.141169 %67 %
134Number of Nofollow Links   Authority-0.1436940 %77 %
135Variations in H4-H6 Tags   Relevancy-0.147222 %83 %
136Ahrefs Internal Links   Authority-0.144407764 %23 %
137Variations in Footer Tags   Relevancy-0.1439532 %71 %
138Exact Matches in Sentences   Relevancy-0.1420222 %91 %
139Number of CSS Includes   Technology-0.1414883 %67 %
140Number of H3 Tags   Size-0.1423969 %77 %
141Search Result Has Rewritten Page Title   Other-0.141146 %58 %
142Exact Matches in H1 Tags   Relevancy-0.142122 %85 %
143Number of Includes   Technology-0.1427883 %67 %
144Variations in Search Result Summary   Relevancy-0.148381 %69 %
145Number of H5 Tags   Size-0.1416220 %76 %
146Variations in Label Tags   Relevancy-0.13416 %82 %
147Variations making whole H1-H6 Tags   Relevancy-0.132115 %74 %
148Has Entities in H3 Tags   Relevancy-0.131144 %33 %
149Variations in H4 Tags   Relevancy-0.137217 %82 %
150Title Word Count   Size-0.13191092 %64 %
151Title Length   Size-0.131316292 %61 %
152Number of H4 Tags   Size-0.1322547 %73 %
153Has Canonical URL   Authority-0.131176 %65 %
154Search Result Link Text Length   Size-0.13875494 %63 %
155Ahrefs Image Backlinks-0.136743785821 %21 %
156Variations making whole H1, H2, and H3 Tags   Relevancy-0.132113 %72 %
157Ahrefs Word Count   Size-0.133708113961 %16 %
158Percentage of NoFollow Links   Authority-0.1323538 %71 %
159Word Count in Meta Description   Size-0.13652468 %71 %
160Search Result URL Length   Size-0.131126892 %53 %
161Exact Matches in H2 Tags   Relevancy-0.1310114 %89 %
162Leading Variations in H3 Tags   Relevancy-0.1311118 %76 %
163Ahrefs Linked Root Domains   Authority-0.1324764 %23 %
164Search Result Link Text Has Ellipsis   Other-0.131133 %53 %
165Meta Description Length   Size-0.1339713268 %71 %
166Number of NoFollow External Links   Authority-0.1233427 %68 %
167Ahrefs Has Image Backlinks   Authority-0.121118 %19 %
168Has Privacy Policy   Trust-0.121149 %73 %
169Has Entities in H4 Tags   Relevancy-0.121124 %34 %
170Flesch Kincaid Reading Grade Level   Other-0.127284 %67 %
171Number of H1 Tags   Size-0.126280 %71 %
172DomDetailer Majestic Referring Domains   Authority-0.12143054722783874 %16 %
173Has Meta Description   Relevancy-0.121169 %65 %
174Ahrefs External Links   Authority-0.126321961 %23 %
175Exact Matches in Meta Description   Relevancy-0.123118 %88 %
176DomDetailer Majestic IPs   Authority-0.122758173970974 %16 %
177LSI Words in H3 Tags   Relevancy-0.121391850 %82 %
178Percentage of NoFollow External Links   Authority-0.1219325 %65 %
179Percentage of NoFollow Internal Links   Authority-0.1211328 %72 %
180Search Result Domain is .com   Other-0.12115 %52 %
181Variations making whole H1 Tags   Relevancy-0.12118 %71 %
182Variations in Article Tags   Relevancy-0.121652130 %71 %
183Search Result Domain is .com, .net, or .org   Other-0.12116 %53 %
184Variations in Class Attributes   Relevancy-0.12141524 %78 %
185DomDetailer Majestic Referring Subnets   Authority-0.12705791107475 %17 %
186Title Has Sentiment Words   Other-0.121116 %67 %
187Flesch Kincaid Reading Ease   -0.1217611294 %63 %
188DomDetailer Facebook Shares   Authority-0.123836771-655955467 %16 %
189Title Has Year   Other-0.121110 %64 %
190Title Has Sales Words   Other-0.121115 %68 %
191Has Meta Keywords   Relevancy-0.121126 %50 %
192Number of Meta Keywords   Relevancy-0.1211393 %61 %
193Search Result Has Schema   Other-0.11113 %71 %
194Number of Questions In H3 Tags   Size-0.114114 %69 %
195DomDetailer Majestic Links   Authority-0.112715605961524508873 %16 %
196Has OpenGraph Image   Relevancy-0.111156 %51 %
197DomDetailer Majestic CF   Authority-0.11592872 %15 %
198Search Result Link Text Has Year   Other-0.11119 %60 %
199DomDetailer Moz PA   Authority-0.11683475 %16 %
200LSI Words in H4 Tags   Relevancy-0.1175731 %85 %