Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Word Count Size | -0.2 | 12278 | 1319 | 77 % | 88 % |
| 2 | Unabridged Word Count Size | -0.19 | 56122 | 2145 | 77 % | 87 % |
| 3 | Clean Text Kilobytes Size | -0.19 | 284 | 14 | 63 % | 85 % |
| 4 | Number of Sentences Size | -0.17 | 697 | 121 | 74 % | 86 % |
| 5 | Average Words Per Sentence Size | -0.17 | 287 | 33 | 68 % | 84 % |
| 6 | Inline CSS Kilobytes Size | -0.17 | 133 | 56 | 58 % | 83 % |
| 7 | Number of Questions In Headings Size | -0.17 | 6 | 2 | 25 % | 83 % |
| 8 | Page Size Kilobytes Size | -0.16 | 854 | 307 | 75 % | 71 % |
| 9 | Search Result Domain Length Size | -0.16 | 21 | 16 | 77 % | 80 % |
| 10 | Search Result Host Length Size | -0.16 | 21 | 16 | 77 % | 80 % |
| 11 | Number of Questions Size | -0.16 | 62 | 10 | 53 % | 77 % |
| 12 | Title Length Size | -0.15 | 107 | 49 | 73 % | 80 % |
| 13 | Word Count in Meta Description Size | -0.15 | 36 | 17 | 53 % | 79 % |
| 14 | Meta Description Length Size | -0.15 | 238 | 106 | 54 % | 79 % |
| 15 | Title Word Count Size | -0.15 | 16 | 8 | 73 % | 80 % |
| 16 | Inline JavaScript Kilobytes Size | -0.15 | 561 | 134 | 70 % | 76 % |
| 17 | Search Result Summary Length Size | -0.14 | 161 | 150 | 90 % | 77 % |
| 18 | Number of Questions In H2 Tags Size | -0.14 | 4 | 1 | 16 % | 80 % |
| 19 | Number of Prices Size | -0.14 | 3738 | 125 | 59 % | 76 % |
| 20 | Number of Questions In H3 Tags Size | -0.13 | 3 | 1 | 12 % | 81 % |
| 21 | Search Result URL Length Size | -0.12 | 88 | 67 | 93 % | 57 % |
| 22 | Search Result Link Text Length Size | -0.11 | 52 | 43 | 91 % | 54 % |
| 23 | Number of Questions In H4 Tags Size | -0.09 | 1 | 1 | 3 % | 71 % |
| 24 | Number of Questions In H1 Tags Size | -0.08 | 1 | 1 | 4 % | 69 % |
| 25 | Bytes To First P Tag Size | -0.08 | 90437 | 70632 | 91 % | 37 % |
| 26 | Number of Bytes to First Match Size | -0.07 | 6846732 | 1234134 | 89 % | 33 % |
| 27 | Number of Questions In H5 Tags Size | -0.05 | 1 | 0 | 1 % | 71 % |
| 28 | Number of Questions In H6 Tags Size | -0.03 | 1 | 0 | 0 % | 78 % |
| 29 | Ahrefs Has HTML Pages Size | 0 | 0 | 0 | 0 % | 83 % |
| 30 | Ahrefs HTML Pages Size | 0 | 0 | 0 | 0 % | 83 % |
| 31 | Ahrefs Pages Size | 0 | 0 | 0 | 0 % | 83 % |
| 32 | Ahrefs Page Size Size | 0 | 0 | 0 | 0 % | 83 % |
| 33 | Ahrefs Word Count Size | 0 | 0 | 0 | 0 % | 83 % |
| 34 | Bing Page Count Size | 0 | 0 | 0 | 0 % | 93 % |
| 35 | Body Tag Size Kilobytes Size | 0 | 0 | 0 | 0 % | 93 % |
| 36 | Head Size Kilobytes Size | 0 | 0 | 0 | 0 % | 96 % |
