200 Top SEO Ranking Factors May 2026

TOP SEO Factors for 2026-05 previous

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

	Name	Correlation	#1 Max	Page 1 Avg	Usage %	Searches %
1	Has Entities in H1 Tags Relevancy	-0.26	1	1	54 %	86 %
2	Entities in H2 Tags	-0.26	46	9	48 %	90 %
3	Entities in Sentences Relevancy	-0.26	316	147	67 %	90 %
4	Number of Unique LSI Words Used Diversity	-0.25	576	347	83 %	67 %
5	Entities in H1 Tags	-0.25	4	2	46 %	86 %
6	Variations in H1, H2, and H3 Tags Relevancy	-0.25	378	60	59 %	90 %
7	Entities in the HTML Tag Relevancy	-0.25	317	149	74 %	90 %
8	Entities in H3 Tags	-0.25	15	8	39 %	90 %
9	Variations in H1 and H2 Tags Relevancy	-0.24	287	34	57 %	90 %
10	Has Entities in H2 Tags Relevancy	-0.24	1	1	50 %	86 %
11	Variations in Search Result Document File Name Relevancy	-0.24	8	3	52 %	81 %
12	Variations in H1-H6 Tags Relevancy	-0.24	409	69	59 %	90 %
13	Number of Top 100 Shared Factors Used Diversity	-0.24	35	29	96 %	95 %
14	Uses Schema sku Other	-0.23	1	1	14 %	29 %
15	Number of Top 50 Shared Factors Used Diversity	-0.23	14	12	94 %	95 %
16	Number of P Tags Size	-0.23	75	36	63 %	86 %
17	Average Words Per Sentence Size	-0.23	55	27	66 %	81 %
18	Number of Top 200 Shared Factors Used Diversity	-0.23	46	38	96 %	95 %
19	Number of Heading Tags Size	-0.22	37	19	65 %	90 %
20	Leading Variations in H1, H2, and H3 Tags Relevancy	-0.22	32	6	48 %	90 %
21	Variations in H2 Tags Relevancy	-0.22	280	31	46 %	86 %
22	Number of Images with ALT Text Size	-0.22	304	33	60 %	86 %
23	Uses JSON-LD sku Other	-0.22	1	1	13 %	29 %
24	Search Result Domain is .com, .net, or .org Other	-0.21	1	1	8 %	86 %
25	Number of H2 Tags Size	-0.21	23	7	58 %	90 %
26	Variations in Div Tags Relevancy	-0.21	68329	9976	72 %	86 %
27	Variations in the Canonical URL Relevancy	-0.21	50	14	51 %	81 %
28	Has Entities in H3 Tags Relevancy	-0.21	1	1	41 %	90 %
29	Variations in A Tag HREF Attributes Relevancy	-0.21	2876	634	56 %	76 %
30	Clean Text Kilobytes Size	-0.21	54	14	62 %	86 %
31	Variations in P Tags Relevancy	-0.21	4557	1067	59 %	95 %
32	Number of Unique Variations Used Diversity	-0.21	18	6	78 %	57 %
33	Word Count Size	-0.21	2930	1443	82 %	86 %
34	Unabridged Word Count Size	-0.21	9873	2200	82 %	86 %
35	Title Tag Has Entities Relevancy	-0.21	1	1	70 %	76 %
36	Search Result Domain is .com Other	-0.2	1	1	8 %	86 %
37	Variations in Search Result URL Path Relevancy	-0.2	10	4	53 %	90 %
38	Variations in LI Tags Relevancy	-0.2	2914	605	57 %	90 %
39	Entities in Title Tag Relevancy	-0.2	4	3	64 %	95 %
40	Entities in Meta Description Tag Relevancy	-0.2	5	3	57 %	81 %
41	Number of Questions In Headings Size	-0.2	5	2	27 %	81 %
42	Number of H1 Tags Size	-0.2	2	1	61 %	100 %
43	Variations in Search Result URL Relevancy	-0.2	21	7	65 %	81 %
44	Variations in ALT Attributes Relevancy	-0.2	588	53	44 %	86 %
45	Leading Variations in H1-H6 Tags Relevancy	-0.2	36	7	49 %	90 %
46	Number of Distinct Entities Used Diversity	-0.2	49	31	82 %	90 %
47	Variations in H1 Tags Relevancy	-0.2	20	5	51 %	95 %
48	Number of Images Size	-0.2	309	43	66 %	90 %
49	Number of H3 Tags Size	-0.2	14	8	50 %	90 %
50	Variations in the Title Tag Relevancy	-0.2	23	6	65 %	71 %
51	Variations in H3 Tags Relevancy	-0.2	123	24	34 %	86 %
52	Number of Factors Used Diversity	-0.2	215	173	98 %	81 %
53	Variations in First 100 Words Relevancy	-0.2	177	47	64 %	86 %
54	Number of Internal Links Authority	-0.2	311	127	71 %	76 %
55	Number of HTML Comments Size	-0.2	106	48	60 %	90 %
56	Variations in Distinct A Tag HREF Attributes Relevancy	-0.19	1808	411	55 %	81 %
57	Headings Has Question Other	-0.19	1	1	28 %	76 %
58	Number of Forms Technology	-0.19	9	3	44 %	81 %
59	Uses Schema product Other	-0.19	1	1	18 %	43 %
60	Uses JSON-LD description Other	-0.19	1	1	35 %	76 %
61	Leading Variations in H2 Tags Relevancy	-0.19	22	4	33 %	86 %
62	Leading Variations in H1 Tags Relevancy	-0.19	2	1	37 %	100 %
63	Has Canonical URL Authority	-0.19	1	1	64 %	76 %
64	Number Of JSON-LD Types Relevancy	-0.18	55	13	48 %	86 %
65	Load Time Milliseconds Performance	-0.18	2818	1066	80 %	81 %
66	Variation Count in Top 30KB Relevancy	-0.18	4928	956	62 %	86 %
67	Uses JSON-LD Product Other	-0.18	1	1	16 %	43 %
68	Variations in A Tags Relevancy	-0.18	9305	1168	60 %	90 %
69	Variations in Search Result Display URL Relevancy	-0.18	19	4	81 %	71 %
70	Variations in Search Result Link Text Relevancy	-0.18	19	4	81 %	71 %
71	Number of Questions In H2 Tags Size	-0.18	2	1	17 %	76 %
72	Variations in Absolute URLs Relevancy	-0.18	14393	2506	65 %	81 %
73	TF/IDF Relevancy	-0.18	2	1	63 %	90 %
74	Variations in Search Result Summary Relevancy	-0.18	56	36	89 %	48 %
75	Variations in Main Tags Relevancy	-0.18	40166	5420	39 %	95 %
76	Clean Keyword Density in the HTML Tag Relevancy	-0.18	203	71	71 %	90 %
77	Number of HTML Tags Size	-0.18	2293	1148	80 %	90 %
78	Variations in Body Tags Relevancy	-0.18	93621	11217	76 %	71 %
79	Variations in HTML Tags Relevancy	-0.18	93621	11217	76 %	71 %
80	Meta Description Tag Has Entities Relevancy	-0.18	1	1	59 %	67 %
81	Has Form Technology	-0.18	1	1	45 %	71 %
82	Meta Description Length Size	-0.17	150	112	57 %	62 %
83	Number of External Links Authority	-0.17	36	15	67 %	95 %
84	Has Meta Charset Technology	-0.17	1	1	66 %	81 %
85	Number of DoFollow Links Authority	-0.17	315	135	71 %	90 %
86	Number of Links Authority	-0.17	318	139	71 %	90 %
87	Uses Schema offer Other	-0.17	1	1	14 %	67 %
88	Number of HTTPS Links Authority	-0.17	318	138	70 %	90 %
89	Number of DoFollow External Links Authority	-0.17	31	13	66 %	95 %
90	Variations in Span Tags Relevancy	-0.17	1077	181	50 %	95 %
91	Term Frequency Relevancy	-0.17	6	3	74 %	86 %
92	LSI Words in H2 Tags Relevancy	-0.17	91	22	44 %	90 %
93	Variation Density in Top 30KB Relevancy	-0.17	310	107	65 %	90 %
94	Uses JSON-LD name Other	-0.17	1	1	47 %	86 %
95	Percentage of DoFollow Links Authority	-0.17	90	76	71 %	90 %
96	Search Result Summary Length Size	-0.17	157	152	95 %	71 %
97	Variations in Nav Tags Relevancy	-0.17	7034	1573	40 %	81 %
98	Variations in Section Tags Relevancy	-0.17	1250	267	34 %	86 %
99	Variations in OpenGraph Title Relevancy	-0.17	16	4	52 %	76 %
100	Variations in OpenGraph Description Relevancy	-0.17	45	11	48 %	76 %
101	Number of Images without ALT Text Size	-0.17	22	9	47 %	100 %
102	LSI Words in Sentences Relevancy	-0.17	2378	746	52 %	90 %
103	Search Result Number of Dirs in Path Other	-0.17	3	2	70 %	81 %
104	Variations in Meta Description Relevancy	-0.17	49	12	52 %	71 %
105	Number of Referring Domains Authority	-0.16	745	168	54 %	81 %
106	Uses JSON-LD Organization Other	-0.16	1	1	31 %	81 %
107	Has Meta Description Relevancy	-0.16	1	1	61 %	67 %
108	Number of Backlinks Authority	-0.16	29278	5684	54 %	81 %
109	Title Word Count Size	-0.16	12	8	80 %	62 %
110	Number of Questions In H3 Tags Size	-0.16	4	1	15 %	86 %
111	Uses JSON-LD DietarySupplement Other	-0.16	1	1	2 %	14 %
112	Uses JSON-LD QuantitativeValue Other	-0.16	1	1	5 %	33 %
113	Uses Schema dietarysupplement Other	-0.16	1	1	2 %	14 %
114	Uses Schema quantitativevalue Other	-0.16	1	1	5 %	33 %
115	Word Count in Meta Description Size	-0.16	25	19	59 %	71 %
116	Uses JSON-LD OfferShippingDetails Other	-0.16	1	1	5 %	19 %
117	Uses JSON-LD ShippingDeliveryTime Other	-0.16	1	1	5 %	19 %
118	Uses Schema shippingdeliverytime Other	-0.16	1	1	5 %	19 %
119	Inline CSS Kilobytes Size	-0.16	189	60	65 %	76 %
120	Uses Schema pricecurrency Other	-0.16	1	1	14 %	67 %
121	Is Article Page Other	-0.16	1	1	30 %	67 %
122	Has OpenGraph Image Relevancy	-0.16	1	1	53 %	76 %
123	Has JSON-LD Schema Markup Relevancy	-0.16	1	1	48 %	90 %
124	Uses JSON-LD DefinedRegion Other	-0.16	1	1	4 %	19 %
125	Leading Variations in H3 Tags Relevancy	-0.16	9	3	24 %	76 %
126	Leading Variations in Meta Description Relevancy	-0.16	1	1	24 %	62 %
127	Uses JSON-LD unitCode Other	-0.16	1	1	5 %	29 %
128	Uses Schema unitcode Other	-0.16	1	1	5 %	29 %
129	Variations in Footer Tags Relevancy	-0.16	6817	699	34 %	86 %
130	Title Length Size	-0.16	68	49	81 %	62 %
131	Uses Microdata AggregateRating Other	-0.16	1	1	3 %	14 %
132	Number of CSS Includes Technology	-0.16	14	9	66 %	62 %
133	Variations in the last 100 words Relevancy	-0.16	176	56	56 %	67 %
134	Uses Schema organization Other	-0.16	1	1	32 %	81 %
135	Number of NoFollow External Links Authority	-0.16	5	2	14 %	67 %
136	Uses JSON-LD value Other	-0.16	1	1	5 %	24 %
137	Number of US Phone Numbers Trust	-0.15	98	13	30 %	90 %
138	Percentage of DoFollow Internal Links Authority	-0.15	86	64	71 %	81 %
139	Variations in Sentences Relevancy	-0.15	8372	1383	71 %	86 %
140	Has Meta Twitter Description Authority	-0.15	1	1	32 %	52 %
141	Uses Microdata Product Other	-0.15	1	1	4 %	24 %
142	Number of Do Follow Backlinks Authority	-0.15	26285	5083	52 %	81 %
143	Has Terms of Service Trust	-0.15	1	1	42 %	52 %
144	Leading Variations in Title Tag Relevancy	-0.15	1	1	43 %	90 %
145	Uses Schema logo Other	-0.15	1	1	12 %	67 %
146	Search Result Summary Has Ellipsis Other	-0.15	1	1	41 %	14 %
147	Variations in Strong Tags Relevancy	-0.15	289	43	29 %	76 %
148	Is Store Page Other	-0.15	1	1	53 %	67 %
149	Percentage of NoFollow Links Authority	-0.15	5	3	22 %	67 %
150	Has Domain Phrase In Title Trust	-0.15	1	1	18 %	57 %
151	Has Meta Twitter Title Authority	-0.15	1	1	33 %	52 %
152	Is OpenGraph Type Article Technology	-0.15	1	1	18 %	57 %
153	Has Schema Markup Relevancy	-0.15	1	1	58 %	76 %
154	Uses Schema url Other	-0.15	1	1	49 %	57 %
155	Uses Schema geocoordinates Other	-0.15	1	1	15 %	24 %
156	Uses Schema offershippingdetails Other	-0.15	1	1	5 %	19 %
157	Exact Matches in Top 30KB Relevancy	-0.15	14	3	18 %	76 %
158	Uses JSON-LD Offer Other	-0.15	1	1	12 %	71 %
159	Number of Facebook Pages Authority	-0.15	2	1	38 %	81 %
160	Percentage of DoFollow External Links Authority	-0.15	20	12	65 %	86 %
161	Has FavIcon Technology	-0.15	1	1	72 %	67 %
162	Number of H5 Tags Size	-0.15	5	2	12 %	67 %
163	Uses Schema definedregion Other	-0.15	1	1	5 %	19 %
164	Uses JSON-LD headline Other	-0.15	1	1	20 %	48 %
165	Variations in Button Tags Relevancy	-0.15	5433	729	25 %	95 %
166	Exact Matches in the HTML Tag Relevancy	-0.15	242	39	36 %	81 %
167	Variations in Value Attributes Relevancy	-0.15	151	26	17 %	67 %
168	Uses JSON-LD brand	-0.15	1	1	7 %	48 %
169	Has US Phone Number Trust	-0.15	1	1	27 %	76 %
170	Uses Schema brand Other	-0.15	1	1	10 %	38 %
171	Uses Schema ratingvalue Other	-0.15	1	1	8 %	57 %
172	Variations in Article Tags Relevancy	-0.15	3771	454	17 %	76 %
173	Uses Schema headline Other	-0.15	1	1	19 %	52 %
174	Has Meta Twitter Card Authority	-0.15	1	1	47 %	57 %
175	Uses JSON-LD addressRegion Other	-0.15	1	1	8 %	57 %
176	Uses JSON-LD CorrectionComment Other	-0.15	1	1	2 %	14 %
177	Uses JSON-LD reviewedBy Other	-0.15	1	1	2 %	14 %
178	Uses Schema correctioncomment Other	-0.15	1	1	2 %	14 %
179	Uses Schema reviewedby Other	-0.15	1	1	2 %	14 %
180	Search Result Link Text Length Size	-0.15	54	48	95 %	29 %
181	Variations in B Tags Relevancy	-0.15	350	49	12 %	95 %
182	LSI Words in H3 Tags Relevancy	-0.15	97	22	38 %	90 %
183	Uses JSON-LD applicableCountry Other	-0.15	1	1	4 %	19 %
184	Uses Schema applicablecountry Other	-0.15	1	1	4 %	19 %
185	Uses Schema pricespecification Other	-0.15	1	1	2 %	19 %
186	Uses Schema name Other	-0.15	1	1	55 %	76 %
187	Uses Schema value Other	-0.15	1	1	5 %	24 %
188	Number of Sentences Size	-0.14	332	183	79 %	76 %
189	Uses JSON-LD ratingValue Other	-0.14	1	1	7 %	57 %
190	Uses JSON-LD SoftwareApplication Other	-0.14	1	1	8 %	29 %
191	Uses Schema softwareapplication Other	-0.14	1	1	8 %	29 %
192	Percentage of NoFollow Internal Links Authority	-0.14	2	1	13 %	76 %
193	Uses JSON-LD priceCurrency Other	-0.14	1	1	12 %	71 %
194	Number of Nofollow Links Authority	-0.14	15	5	25 %	81 %
195	Uses Schema description Other	-0.14	1	1	44 %	67 %
196	Uses Schema ratingcount Other	-0.14	1	1	2 %	48 %
197	Uses Schema addressregion Other	-0.14	1	1	9 %	57 %
198	Uses JSON-LD gtin Other	-0.14	1	1	2 %	14 %
199	Uses Schema gtin Other	-0.14	1	1	2 %	14 %
200	Number Of Claimed Brands Other	-0.14	2	1	18 %	81 %

Measures 150509 SEO Factors

148787 Built-In SEO Factors

139585 On-page SEO Factors

9202 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.

1575 Technology Stack SEO Factors

SEO Factor Class

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TOP SEO Factors for 2026-05 previous