Measures 140713 SEO Factors

138991 Built-In SEO Factors

130079 On-page SEO Factors

8912 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 2025-05     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-0.2833778 %89 %
2Number of Top 100 Shared Factors Used   Diversity-0.25392995 %93 %
3Number of Top 200 Shared Factors Used   Diversity-0.25523995 %93 %
4Number of Unique LSI Words Used   Diversity-0.25101829383 %77 %
5Entities in Title Tag   Relevancy-0.257365 %89 %
6Number of Top 50 Shared Factors Used   Diversity-0.24171294 %90 %
7Variations in Search Result Link Text   Relevancy-0.2414274 %84 %
8Variations in Search Result Display URL   Relevancy-0.2414274 %85 %
9Number of Distinct Entities Used   Diversity-0.24672776 %91 %
10Variations in Body Tags   Relevancy-0.2315662185776 %91 %
11Variations in the Title Tag   Relevancy-0.2319263 %84 %
12Variations in H1 and H2 Tags   Relevancy-0.23165561 %89 %
13Variations in HTML Tags   Relevancy-0.2315662184976 %92 %
14Variations in H1, H2, and H3 Tags   Relevancy-0.23237763 %90 %
15Search Result Domain is .com, .net, or .org   Other-0.23115 %72 %
16Variations in Div Tags   Relevancy-0.233541524972 %90 %
17Variations in H1-H6 Tags   Relevancy-0.23251864 %89 %
18Variations in Sentences   Relevancy-0.2337904669 %92 %
19Clean Keyword Density in the HTML Tag   Relevancy-0.23189467 %82 %
20Load Time Milliseconds   Performance-0.2211606170184 %92 %
21Search Result Domain is .com   Other-0.22115 %72 %
22Variations in P Tags   Relevancy-0.2260055667 %92 %
23Number of Factors Used   Diversity-0.2230117895 %89 %
24Term Frequency   Relevancy-0.226376 %91 %
25Variations in Search Result Document File Name   Relevancy-0.2113142 %82 %
26Variations in H1 Tags   Relevancy-0.2156152 %85 %
27Variations in Search Result URL   Relevancy-0.2124250 %80 %
28Variations in Search Result URL Path   Relevancy-0.2115144 %83 %
29Variations in Meta Description   Relevancy-0.295253 %85 %
30Variations in H2 Tags   Relevancy-0.2110445 %89 %
31Variations in First 100 Words   Relevancy-0.2188762 %86 %
32Variation Density in Top 30KB   Relevancy-0.2349357 %83 %
33Entities in the HTML Tag   Relevancy-0.266112671 %94 %
34Entities in Sentences   Relevancy-0.265712469 %94 %
35Variation Count in Top 30KB   Relevancy-0.256575765 %86 %
36Variations in the Canonical URL   Relevancy-0.267247 %84 %
37Entities in H1 Tags-0.25254 %87 %
38Leading Variations in H1-H6 Tags   Relevancy-0.225243 %88 %
39Variations in LI Tags   Relevancy-0.249153265 %90 %
40Leading Variations in H1, H2, and H3 Tags   Relevancy-0.219241 %88 %
41Exact Matches in the HTML Tag   Relevancy-0.23231028 %89 %
42Variations in A Tags   Relevancy-0.1944055165 %89 %
43Entities in H2 Tags-0.1938652 %90 %
44Variations in OpenGraph Title   Relevancy-0.1914151 %81 %
45TF/IDF   Relevancy-0.191154 %86 %
46LSI Words in Title Tag   Relevancy-0.1914562 %93 %
47Leading Variations in Title Tag   Relevancy-0.181130 %84 %
48Variations in OpenGraph Description   Relevancy-0.18139247 %85 %
49Entities in Meta Description Tag   Relevancy-0.188355 %86 %
50Variations in ALT Attributes   Relevancy-0.18285745 %84 %
51Number of Referring Domains   Authority-0.1816874042 %34 %
52Variations in Absolute URLs   Relevancy-0.1872347758 %89 %
53Variations in Span Tags   Relevancy-0.1811671349 %89 %
54Variations in Script Tags   Relevancy-0.187255825260 %90 %
55Variations in A Tag HREF Attributes   Relevancy-0.1823574558 %89 %
56Leading Variations in H1 Tags   Relevancy-0.183127 %84 %
57Variations in Distinct A Tag HREF Attributes   Relevancy-0.1717353058 %89 %
58Number of Includes   Technology-0.17572781 %79 %
59Search Result Number of Dirs in Path   Other-0.174270 %76 %
60Number of Do Follow Backlinks   Authority-0.17103552271238 %34 %
61Entities in H3 Tags-0.1772642 %88 %
62Number of Backlinks   Authority-0.17149098501043 %36 %
63Title Tag Has Entities   Relevancy-0.171166 %83 %
64Has Entities in H1 Tags   Relevancy-0.171155 %81 %
65Number of No Follow Backlinks   Authority-0.17146318234034 %32 %
66Exact Matches in H1-H6 Tags   Relevancy-0.1710119 %85 %
67Variations in H3 Tags   Relevancy-0.1672333 %85 %
68Variations in Nav Tags   Relevancy-0.16108096646 %82 %
69Variations in Section Tags   Relevancy-0.1615872637 %85 %
70Number of HTML Tags   Size-0.162934106284 %84 %
71LSI Words in Sentences   Relevancy-0.16437464762 %94 %
72Number of Facebook Pages   Authority-0.1642363 %77 %
73Unabridged Word Count   Size-0.1683719192484 %86 %
74Number of P Tags   Size-0.162254079 %83 %
75Word Count   Size-0.1683529155083 %86 %
76Number of Images   Size-0.161983280 %83 %
77Exact Matches in Sentences   Relevancy-0.1689320 %87 %
78Clean Text Kilobytes   Size-0.1612151479 %86 %
79Exact Matches in Title Tag   Relevancy-0.162117 %84 %
80Variations in Main Tags   Relevancy-0.16154709035 %86 %
81Number of Sentences   Size-0.1695012983 %86 %
82Number of Instagram Pages   Authority-0.1520247 %77 %
83Number of CSS Includes   Technology-0.15251072 %78 %
84Search Result URL Length   Size-0.151016394 %57 %
85Leading Variations in H2 Tags   Relevancy-0.157121 %84 %
86Exact Matches in Top 30KB   Relevancy-0.1520217 %81 %
87Number of Images with ALT Text   Size-0.151932275 %85 %
88Percentage of DoFollow Internal Links   Authority-0.15947480 %82 %
89Variations in the last 100 words   Relevancy-0.15185445 %83 %
90Number of Questions   Size-0.151111165 %84 %
91Variations in TITLE Attributes   Relevancy-0.15253732 %83 %
92Has JSON-LD Schema Markup   Relevancy-0.151154 %75 %
93Number of Heading Tags   Size-0.151072379 %81 %
94Variations in Footer Tags   Relevancy-0.1544622533 %85 %
95Inline CSS Kilobytes   Size-0.152366565 %84 %
96LSI Words in H1 Tags   Relevancy-0.1513454 %92 %
97Percentage of DoFollow Links   Authority-0.15998580 %84 %
98Number of Questions In Headings   Size-0.1513235 %84 %
99Page Size Kilobytes   Size-0.15136726883 %83 %
100Variations making whole H1, H2, and H3 Tags   Relevancy-0.151113 %80 %
101LSI Words in Meta Description Tag   Relevancy-0.1539951 %90 %
102Number of Internal Links   Authority-0.1548213280 %78 %
103Number of JavaScript Includes   Technology-0.15441881 %81 %
104Variations making whole H1-H6 Tags   Relevancy-0.152115 %81 %
105Number of DoFollow Links   Authority-0.1547714381 %79 %
106Number of Links   Authority-0.1549314781 %78 %
107Number of HTTPS Links   Authority-0.1549314480 %79 %
108Has Entities in H2 Tags   Relevancy-0.151153 %80 %
109Number of H2 Tags   Size-0.1539771 %80 %
110Flesch Kincaid Reading Grade Level   Other-0.147291 %83 %
111Number of Absolute URLs   Authority-0.1485226983 %82 %
112Variations in Strong Tags   Relevancy-0.1490325 %85 %
113Number Of JSON-LD Types   Relevancy-0.141761457 %84 %
114Number of US Phone Numbers   Trust-0.146361246 %80 %
115Variations in Search Result Summary   Relevancy-0.1452273 %65 %
116Variations making whole A Tags   Relevancy-0.1437227 %79 %
117Variations Making Whole LI Tags   Relevancy-0.144122 %78 %
118Title Word Count   Size-0.1425882 %73 %
119Variations in I Tags   Relevancy-0.14263525 %80 %
120LSI Words in H2 Tags   Relevancy-0.141361953 %91 %
121Number of H3 Tags   Size-0.1487963 %79 %
122Number of Prices   Size-0.145986467 %84 %
123Title Length   Size-0.141775182 %74 %
124Search Result Host Length   Size-0.14251883 %77 %
125Search Result Domain Length   Size-0.14251883 %77 %
126Inline JavaScript Kilobytes   Size-0.144957581 %81 %
127Is Home Page   Other-0.141118 %36 %
128Number of Facebook Accounts   Authority-0.143131 %73 %
129Has Canonical URL   Authority-0.141171 %74 %
130Entities in H4 Tags-0.1420221 %83 %
131Number of Social Pages   Authority-0.1481567 %76 %
132Variations in Meta Twitter Description   Relevancy-0.1436121 %76 %
133Number of H1 Tags   Size-0.144273 %80 %
134Word Count in Meta Description   Size-0.14832067 %75 %
135Meta Description Tag Has Entities   Relevancy-0.141155 %77 %
136Has US Phone Number   Trust-0.141146 %67 %
137Meta Description Length   Size-0.1353812267 %77 %
138Search Result Uses HTTPS   Other-0.131183 %79 %
139Has Meta Viewport   Technology-0.131181 %78 %
140Number of HTML Comments   Size-0.133164275 %83 %
141Variations making whole H1 Tags   Relevancy-0.13119 %79 %
142Uses Schema pricecurrency   Other-0.13116 %44 %
143Exact Matches in H1 Tags   Relevancy-0.131113 %83 %
144Variations Making Whole Span Tags   Relevancy-0.134118 %83 %
145Number of DoFollow External Links   Authority-0.13601476 %72 %
146Number of Forms   Technology-0.1317255 %74 %
147Number of External Links   Authority-0.13601677 %71 %
148Number of Images without ALT Text   Size-0.13591160 %79 %
149Uses Schema aggregaterating   Other-0.131111 %57 %
150Number of LinkedIn Pages   Authority-0.1320128 %69 %
151Variations in H4-H6 Tags   Relevancy-0.1366218 %78 %
152Headings Has Question   Other-0.131135 %78 %
153Number of Questions In H2 Tags   Size-0.136122 %78 %
154Uses JSON-LD priceCurrency   Other-0.13116 %45 %
155Uses JSON-LD name   Other-0.131152 %71 %
156Uses Schema name   Other-0.131160 %66 %
157Has FavIcon   Technology-0.131174 %75 %
158Uses JSON-LD Offer   Other-0.13116 %54 %
159Has Meta Charset   Technology-0.131178 %75 %
160Variations in Meta Twitter Content   Relevancy-0.1312123 %73 %
161Number of Questions In H3 Tags   Size-0.1310116 %78 %
162Uses Schema offer   Other-0.13117 %54 %
163Variations in Article Tags   Relevancy-0.1313481223 %75 %
164Has Meta Description   Relevancy-0.131166 %72 %
165Has Privacy Policy   Trust-0.131155 %68 %
166Leading Variations in H3 Tags   Relevancy-0.1316114 %81 %
167Uses JSON-LD Service   Other-0.13116 %36 %
168Uses JSON-LD ListItem   Other-0.131134 %69 %
169Has Schema Markup   Relevancy-0.131163 %72 %
170Uses JSON-LD url   Other-0.131144 %69 %
171Uses Schema listitem   Other-0.131139 %64 %
172Number of Social Accounts   Authority-0.134248 %72 %
173Uses JSON-LD AggregateRating   Other-0.13119 %61 %
174Uses JSON-LD serviceType   Other-0.13113 %28 %
175Has Apple Touch Icon   Technology-0.131151 %67 %
176Uses Schema product   Other-0.13118 %50 %
177Has Entities in H3 Tags   Relevancy-0.131143 %79 %
178Uses Schema service   Other-0.13116 %35 %
179Average Words Per Sentence   Size-0.132423481 %71 %
180Uses Schema servicetype   Other-0.13114 %28 %
181Number of Email Addresses   Trust-0.13279544 %80 %
182Number Of Claimed Brands   Other-0.1394324 %72 %
183Has Form   Technology-0.131154 %68 %
184Uses JSON-LD price   Other-0.12114 %38 %
185Has Contact Page   Trust-0.121165 %68 %
186Is Store Page   Other-0.121147 %67 %
187Uses Schema item   Other-0.121127 %60 %
188Uses JSON-LD Product   Other-0.12117 %52 %
189Uses Schema breadcrumblist   Other-0.121138 %65 %
190Uses JSON-LD item   Other-0.121122 %62 %
191Uses Schema url   Other-0.121154 %63 %
192Uses Schema price   Other-0.12115 %40 %
193Uses Schema addressregion   Other-0.121117 %55 %
194Number of Twitter Accounts   Authority-0.123130 %66 %
195Uses Schema telephone   Other-0.121119 %57 %
196Uses JSON-LD BreadcrumbList   Other-0.121134 %69 %
197Exact Matches in H2 Tags   Relevancy-0.125110 %87 %
198Number of H4 Tags   Size-0.1238439 %76 %
199Has Email   Trust-0.121143 %69 %
200Uses Schema postaladdress   Other-0.121118 %57 %