Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Search Result Host Length Size | -0.18 | 28 | 20 | 73 % | 77 % |
| 2 | Search Result Domain Length Size | -0.18 | 28 | 20 | 73 % | 77 % |
| 3 | Number of Sentences Size | -0.17 | 1108 | 120 | 73 % | 86 % |
| 4 | Unabridged Word Count Size | -0.17 | 7216 | 1834 | 75 % | 80 % |
| 5 | Word Count Size | -0.16 | 5026 | 1502 | 75 % | 78 % |
| 6 | Inline CSS Kilobytes Size | -0.16 | 197 | 51 | 54 % | 82 % |
| 7 | Clean Text Kilobytes Size | -0.16 | 46 | 13 | 70 % | 79 % |
| 8 | Number of Questions Size | -0.16 | 182 | 10 | 56 % | 81 % |
| 9 | Page Size Kilobytes Size | -0.15 | 750 | 237 | 76 % | 80 % |
| 10 | Number of Questions In Headings Size | -0.15 | 8 | 2 | 29 % | 76 % |
| 11 | Title Length Size | -0.15 | 100 | 52 | 71 % | 75 % |
| 12 | Title Word Count Size | -0.15 | 15 | 8 | 71 % | 76 % |
| 13 | Inline JavaScript Kilobytes Size | -0.14 | 529 | 72 | 72 % | 78 % |
| 14 | Search Result Summary Length Size | -0.14 | 164 | 150 | 79 % | 79 % |
| 15 | Number of Questions In H2 Tags Size | -0.14 | 4 | 1 | 17 % | 74 % |
| 16 | Search Result Link Text Length Size | -0.14 | 53 | 44 | 76 % | 63 % |
| 17 | Meta Description Length Size | -0.14 | 431 | 116 | 57 % | 70 % |
| 18 | Number of Questions In H3 Tags Size | -0.14 | 6 | 1 | 12 % | 72 % |
| 19 | Search Result URL Length Size | -0.13 | 133 | 65 | 75 % | 49 % |
| 20 | Number of Prices Size | -0.13 | 705 | 47 | 59 % | 76 % |
| 21 | Average Words Per Sentence Size | -0.13 | 604 | 48 | 71 % | 72 % |
| 22 | Word Count in Meta Description Size | -0.13 | 70 | 19 | 58 % | 73 % |
| 23 | Number of Questions In H4 Tags Size | -0.11 | 1 | 1 | 5 % | 62 % |
| 24 | Bytes To First P Tag Size | -0.1 | 92357 | 66878 | 84 % | 48 % |
| 25 | Number of Questions In H1 Tags Size | -0.08 | 1 | 1 | 3 % | 54 % |
| 26 | Number of Bytes to First Match Size | -0.08 | 4511656 | 1158182 | 86 % | 33 % |
| 27 | Number of Questions In H5 Tags Size | -0.06 | 1 | 1 | 1 % | 46 % |
| 28 | Number of Questions In H6 Tags Size | -0.03 | 1 | 0 | 1 % | 49 % |
| 29 | Body Tag Size Kilobytes Size | -0.01 | 172 | 4 | 3 % | 93 % |
| 30 | Head Size Kilobytes Size | -0 | 66 | 1 | 2 % | 92 % |
| 31 | Ahrefs Has HTML Pages Size | 0 | 0 | 0 | 0 % | 51 % |
| 32 | Ahrefs HTML Pages Size | 0 | 0 | 0 | 0 % | 51 % |
| 33 | Ahrefs Pages Size | 0 | 0 | 0 | 0 % | 51 % |
| 34 | Ahrefs Page Size Size | 0 | 0 | 0 | 0 % | 51 % |
| 35 | Ahrefs Word Count Size | 0 | 0 | 0 | 0 % | 51 % |
| 36 | Bing Page Count Size | 0 | 0 | 0 | 0 % | 94 % |