Top SEO Factor data is updated daily for latest "month to date" measurements.
| Name | Correlation | #1 Max | Page 1 Avg | Usage % | Searches % | |
| 1 | Ahrefs Word Count Size | -0.22 | 5435 | 1640 | 72 % | 18 % |
| 2 | Body Tag Size Kilobytes Size | -0.2 | 291 | 93 | 82 % | 92 % |
| 3 | Page Size Kilobytes Size | -0.2 | 1190 | 164 | 95 % | 89 % |
| 4 | Unabridged Word Count Size | -0.19 | 6935 | 1772 | 95 % | 90 % |
| 5 | Clean Text Kilobytes Size | -0.19 | 48 | 11 | 92 % | 89 % |
| 6 | Number of HTML Tags Size | -0.19 | 3126 | 927 | 96 % | 89 % |
| 7 | Ahrefs Page Size Size | -0.19 | 93294 | 34998 | 75 % | 18 % |
| 8 | Word Count Size | -0.19 | 4144 | 1411 | 95 % | 89 % |
| 9 | Number of Sentences Size | -0.18 | 258 | 62 | 93 % | 88 % |
| 10 | Number of P Tags Size | -0.17 | 141 | 38 | 90 % | 88 % |
| 11 | Number of Questions Size | -0.17 | 94 | 6 | 66 % | 83 % |
| 12 | Number of Heading Tags Size | -0.17 | 62 | 21 | 92 % | 88 % |
| 13 | Number of Images with ALT Text Size | -0.16 | 75 | 20 | 85 % | 87 % |
| 14 | Number of Images Size | -0.16 | 104 | 30 | 91 % | 85 % |
| 15 | Ahrefs Pages Size | -0.16 | 6 | 2 | 73 % | 31 % |
| 16 | Number of H2 Tags Size | -0.16 | 20 | 7 | 78 % | 88 % |
| 17 | Number of H3 Tags Size | -0.15 | 29 | 8 | 68 % | 85 % |
| 18 | Number of Questions In Headings Size | -0.15 | 7 | 2 | 35 % | 30 % |
| 19 | Inline JavaScript Kilobytes Size | -0.15 | 331 | 36 | 91 % | 81 % |
| 20 | Number of Questions In H2 Tags Size | -0.14 | 4 | 1 | 23 % | 76 % |
| 21 | Search Result Summary Length Size | -0.14 | 245 | 152 | 96 % | 74 % |
| 22 | Head Size Kilobytes Size | -0.14 | 130 | 47 | 91 % | 75 % |
| 23 | Inline CSS Kilobytes Size | -0.13 | 415 | 34 | 64 % | 79 % |
| 24 | Number of Prices Size | -0.13 | 508 | 36 | 70 % | 74 % |
| 25 | Number of Questions In H3 Tags Size | -0.13 | 4 | 1 | 16 % | 77 % |
| 26 | Number of HTML Comments Size | -0.12 | 222 | 32 | 77 % | 72 % |
| 27 | Word Count in Meta Description Size | -0.12 | 86 | 22 | 72 % | 73 % |
| 28 | Number of HREF Lang Tags Size | -0.12 | 25 | 2 | 12 % | 73 % |
| 29 | Meta Description Length Size | -0.12 | 512 | 128 | 72 % | 70 % |
| 30 | Number of Schema Products Size | -0.12 | 6 | 1 | 5 % | 36 % |
| 31 | Number of H4 Tags Size | -0.12 | 20 | 4 | 43 % | 77 % |
| 32 | Search Result URL Length Size | -0.11 | 212 | 63 | 97 % | 42 % |
| 33 | Bytes To First P Tag Size | -0.11 | 88022 | 54271 | 97 % | 65 % |
| 34 | Number of Images without ALT Text Size | -0.11 | 52 | 11 | 69 % | 74 % |
| 35 | Search Result Domain Length Size | -0.11 | 28 | 19 | 96 % | 53 % |
| 36 | Title Word Count Size | -0.11 | 20 | 9 | 94 % | 60 % |
| 37 | Search Result Host Length Size | -0.11 | 28 | 19 | 97 % | 53 % |
| 38 | Average Words Per Sentence Size | -0.11 | 117 | 35 | 93 % | 59 % |
| 39 | Number of H5 Tags Size | -0.11 | 9 | 2 | 19 % | 74 % |
| 40 | Number of Questions In H6 Tags Size | -0.1 | 1 | 1 | 2 % | 28 % |
| 41 | Number of Questions In H5 Tags Size | -0.1 | 2 | 1 | 3 % | 44 % |
| 42 | Title Length Size | -0.1 | 104 | 58 | 94 % | 57 % |
| 43 | Number of Questions In H4 Tags Size | -0.1 | 6 | 1 | 6 % | 64 % |
| 44 | Number of Questions In H1 Tags Size | -0.1 | 1 | 1 | 7 % | 43 % |
| 45 | Number of H1 Tags Size | -0.1 | 14 | 2 | 85 % | 65 % |
| 46 | Search Result Link Text Length Size | -0.09 | 173 | 51 | 96 % | 51 % |
| 47 | Number of Bytes to First Match Size | -0.09 | 9929997 | 600882 | 94 % | 56 % |
| 48 | Number of H6 Tags Size | -0.09 | 12 | 1 | 9 % | 68 % |
| 49 | Bing Page Count Size | 0 | 0 | 0 | 0 % | 93 % |
