Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Number of HTML Tags Size | -0.19 | 2137 | 854 | 94 % | 83 % |
| 2 | Unabridged Word Count Size | -0.19 | 7772 | 2398 | 93 % | 88 % |
| 3 | Clean Text Kilobytes Size | -0.18 | 45 | 18 | 90 % | 86 % |
| 4 | Word Count Size | -0.18 | 5959 | 1967 | 93 % | 89 % |
| 5 | Number of P Tags Size | -0.17 | 236 | 39 | 86 % | 82 % |
| 6 | Page Size Kilobytes Size | -0.17 | 286 | 120 | 94 % | 78 % |
| 7 | Number of Images with ALT Text Size | -0.17 | 99 | 18 | 79 % | 78 % |
| 8 | Number of Heading Tags Size | -0.16 | 47 | 20 | 88 % | 81 % |
| 9 | Number of Images Size | -0.15 | 119 | 27 | 87 % | 77 % |
| 10 | Number of Sentences Size | -0.15 | 221 | 59 | 92 % | 76 % |
| 11 | Number of Questions Size | -0.15 | 48 | 8 | 66 % | 79 % |
| 12 | Number of Questions In Headings Size | -0.15 | 7 | 2 | 35 % | 78 % |
| 13 | Number of H2 Tags Size | -0.15 | 15 | 6 | 70 % | 82 % |
| 14 | Number of H3 Tags Size | -0.15 | 24 | 8 | 64 % | 82 % |
| 15 | Search Result Link Text Length Size | -0.14 | 78 | 54 | 95 % | 62 % |
| 16 | Number of HREF Lang Tags Size | -0.14 | 16 | 2 | 12 % | 74 % |
| 17 | Meta Description Length Size | -0.14 | 271 | 124 | 69 % | 78 % |
| 18 | Word Count in Meta Description Size | -0.14 | 45 | 21 | 69 % | 78 % |
| 19 | Number of Questions In H2 Tags Size | -0.14 | 3 | 1 | 19 % | 72 % |
| 20 | Title Word Count Size | -0.13 | 28 | 9 | 91 % | 60 % |
| 21 | Title Length Size | -0.13 | 181 | 57 | 91 % | 57 % |
| 22 | Body Tag Size Kilobytes Size | -0.13 | 230 | 62 | 79 % | 69 % |
| 23 | Inline JavaScript Kilobytes Size | -0.13 | 154 | 22 | 88 % | 68 % |
| 24 | Number of H4 Tags Size | -0.13 | 16 | 4 | 44 % | 76 % |
| 25 | Number of Questions In H3 Tags Size | -0.12 | 5 | 1 | 14 % | 71 % |
| 26 | Head Size Kilobytes Size | -0.12 | 148 | 29 | 90 % | 67 % |
| 27 | Number of HTML Comments Size | -0.12 | 117 | 29 | 84 % | 69 % |
| 28 | Inline CSS Kilobytes Size | -0.12 | 128 | 19 | 52 % | 71 % |
| 29 | Search Result Summary Length Size | -0.12 | 634 | 270 | 94 % | 58 % |
| 30 | Number of Questions In H4 Tags Size | -0.11 | 3 | 1 | 7 % | 65 % |
| 31 | Average Words Per Sentence Size | -0.11 | 1171 | 87 | 90 % | 69 % |
| 32 | Search Result URL Length Size | -0.11 | 99 | 62 | 94 % | 49 % |
| 33 | Number of H5 Tags Size | -0.11 | 8 | 2 | 19 % | 69 % |
| 34 | Number of Images without ALT Text Size | -0.11 | 47 | 10 | 69 % | 70 % |
| 35 | Search Result Domain Length Size | -0.11 | 26 | 19 | 94 % | 50 % |
| 36 | Number of H6 Tags Size | -0.1 | 8 | 1 | 10 % | 65 % |
| 37 | Search Result Host Length Size | -0.1 | 26 | 19 | 95 % | 48 % |
| 38 | Number of Questions In H5 Tags Size | -0.1 | 1 | 1 | 3 % | 43 % |
| 39 | Number of H1 Tags Size | -0.09 | 5 | 2 | 80 % | 64 % |
| 40 | Number of Bytes to First Match Size | -0.09 | 9518544 | 237960 | 96 % | 61 % |
| 41 | Number of Questions In H1 Tags Size | -0.09 | 1 | 1 | 8 % | 48 % |
| 42 | Number of Questions In H6 Tags Size | -0.08 | 1 | 1 | 2 % | 23 % |
| 43 | Bing Page Count Size | 0 | 0 | 0 | 0 % | 33 % |
