Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Clean Text Kilobytes Size | -0.15 | 67 | 12 | 72 % | 83 % |
| 2 | Unabridged Word Count Size | -0.15 | 12283 | 1762 | 82 % | 85 % |
| 3 | Word Count Size | -0.15 | 4962 | 1349 | 83 % | 85 % |
| 4 | Search Result Domain Length Size | -0.14 | 24 | 17 | 82 % | 74 % |
| 5 | Average Words Per Sentence Size | -0.14 | 155 | 28 | 75 % | 81 % |
| 6 | Search Result Host Length Size | -0.14 | 24 | 17 | 82 % | 74 % |
| 7 | Inline CSS Kilobytes Size | -0.13 | 245 | 66 | 65 % | 82 % |
| 8 | Search Result URL Length Size | -0.13 | 89 | 60 | 95 % | 63 % |
| 9 | Number of Sentences Size | -0.13 | 458 | 122 | 80 % | 85 % |
| 10 | Number of Questions In Headings Size | -0.13 | 7 | 2 | 35 % | 82 % |
| 11 | Meta Description Length Size | -0.13 | 339 | 118 | 65 % | 79 % |
| 12 | Title Word Count Size | -0.12 | 12 | 8 | 81 % | 78 % |
| 13 | Word Count in Meta Description Size | -0.12 | 55 | 19 | 65 % | 80 % |
| 14 | Page Size Kilobytes Size | -0.12 | 974 | 308 | 82 % | 75 % |
| 15 | Title Length Size | -0.12 | 88 | 51 | 81 % | 80 % |
| 16 | Number of Questions Size | -0.12 | 68 | 11 | 65 % | 80 % |
| 17 | Number of Prices Size | -0.12 | 620 | 74 | 66 % | 80 % |
| 18 | Search Result Summary Length Size | -0.12 | 194 | 154 | 94 % | 75 % |
| 19 | Number of Questions In H2 Tags Size | -0.12 | 4 | 1 | 22 % | 78 % |
| 20 | Inline JavaScript Kilobytes Size | -0.12 | 511 | 118 | 78 % | 72 % |
| 21 | Number of Questions In H3 Tags Size | -0.11 | 4 | 1 | 15 % | 80 % |
| 22 | Search Result Link Text Length Size | -0.1 | 55 | 46 | 94 % | 58 % |
| 23 | Number of Bytes to First Match Size | -0.09 | 9858540 | 1607948 | 95 % | 34 % |
| 24 | Number of Questions In H4 Tags Size | -0.08 | 4 | 1 | 5 % | 70 % |
| 25 | Bytes To First P Tag Size | -0.08 | 93446 | 72809 | 95 % | 41 % |
| 26 | Number of Questions In H1 Tags Size | -0.08 | 1 | 1 | 4 % | 65 % |
| 27 | Number of Questions In H5 Tags Size | -0.05 | 1 | 1 | 1 % | 69 % |
| 28 | Number of Questions In H6 Tags Size | -0.04 | 1 | 0 | 1 % | 75 % |
| 29 | Ahrefs Has HTML Pages Size | 0 | 0 | 0 | 0 % | 82 % |
| 30 | Ahrefs HTML Pages Size | 0 | 0 | 0 | 0 % | 82 % |
| 31 | Ahrefs Pages Size | 0 | 0 | 0 | 0 % | 82 % |
| 32 | Ahrefs Page Size Size | 0 | 0 | 0 | 0 % | 82 % |
| 33 | Ahrefs Word Count Size | 0 | 0 | 0 | 0 % | 82 % |
| 34 | Bing Page Count Size | 0 | 0 | 0 | 0 % | 99 % |
| 35 | Body Tag Size Kilobytes Size | 0 | 0 | 0 | 0 % | 99 % |
| 36 | Head Size Kilobytes Size | 0 | 0 | 0 | 0 % | 99 % |
