Highest domain authority .io websites
242 of the top 20,000 domains by authority end in .io (average score 60.4). The strongest is github.io with 84/100 and 458,752 referring domains.
Top 100 .io domains
| # | Domain | Authority | Referring domains | Web graph rank | Traffic rank |
|---|---|---|---|---|---|
| 63 | github.io | 84 | 458,752 | 45 | Top 50K websites (Chrome) |
| 273 | trustindex.io | 75 | 367,531 | 3,786 | Top 500K websites (Chrome) |
| 381 | termly.io | 74 | 68,698 | 357 | Top 1M websites (Chrome) |
| 420 | readthedocs.io | 74 | 41,365 | 152 | Top 500K websites (Chrome) |
| 564 | webflow.io | 72 | 66,197 | 1,069 | Top 500K websites (Chrome) |
| 580 | sanity.io | 72 | 56,556 | 1,166 | Top 100K websites (Chrome) |
| 610 | imagekit.io | 72 | 43,598 | 594 | Top 500K websites (Chrome) |
| 652 | plausible.io | 71 | 144,911 | 6,069 | Top 500K websites (Chrome) |
| 759 | codepen.io | 71 | 28,813 | 546 | Top 50K websites (Chrome) |
| 793 | complianz.io | 70 | 130,618 | 8,521 | not in Chrome's top 1M |
| 888 | gitbook.io | 70 | 30,294 | 1,072 | not in Chrome's top 1M |
| 1,031 | itch.io | 69 | 37,101 | 2,364 | Top 1K websites (Chrome) |
| 1,127 | opensea.io | 69 | 23,564 | 1,090 | Top 50K websites (Chrome) |
| 1,165 | kubernetes.io | 69 | 16,532 | 731 | Top 100K websites (Chrome) |
| 1,270 | pxf.io | 68 | 31,207 | 2,208 | Top 1M websites (Chrome) |
| 1,442 | modelcontextprotocol.io | 68 | 16,561 | 1,057 | Top 500K websites (Chrome) |
| 1,474 | bubble.io | 68 | 13,865 | 614 | Top 500K websites (Chrome) |
| 1,513 | devowl.io | 67 | 62,859 | 10,738 | not in Chrome's top 1M |
| 1,514 | borlabs.io | 67 | 60,602 | 12,981 | not in Chrome's top 1M |
| 1,593 | sjv.io | 67 | 25,553 | 4,020 | not in Chrome's top 1M |
| 1,647 | gohugo.io | 67 | 23,359 | 2,681 | not in Chrome's top 1M |
| 1,691 | powr.io | 67 | 20,996 | 2,198 | Top 1M websites (Chrome) |
| 1,779 | elevenlabs.io | 67 | 16,351 | 1,829 | Top 5K websites (Chrome) |
| 1,795 | greenhouse.io | 67 | 14,246 | 1,425 | Top 10K websites (Chrome) |
| 1,856 | meduza.io | 67 | 8,928 | 598 | Top 10K websites (Chrome) |
| 1,892 | ghost.io | 66 | 26,627 | 5,032 | not in Chrome's top 1M |
| 1,927 | pantheonsite.io | 66 | 23,197 | 4,482 | Top 500K websites (Chrome) |
| 1,941 | prismic.io | 66 | 22,764 | 3,850 | Top 1M websites (Chrome) |
| 1,943 | systeme.io | 66 | 22,674 | 5,062 | Top 50K websites (Chrome) |
| 2,124 | osf.io | 66 | 17,318 | 2,597 | Top 500K websites (Chrome) |
| 2,140 | hackmd.io | 66 | 16,938 | 3,624 | Top 50K websites (Chrome) |
| 2,214 | sentry.io | 66 | 14,894 | 2,019 | Top 500K websites (Chrome) |
| 2,248 | etherscan.io | 66 | 13,302 | 2,274 | Top 50K websites (Chrome) |
| 2,269 | n8n.io | 66 | 12,435 | 2,340 | Top 100K websites (Chrome) |
| 2,289 | metamask.io | 66 | 11,218 | 1,912 | Top 500K websites (Chrome) |
| 2,296 | gitlab.io | 66 | 10,748 | 1,685 | Top 500K websites (Chrome) |
| 2,297 | redis.io | 66 | 10,733 | 1,580 | Top 500K websites (Chrome) |
| 2,363 | jenkins.io | 66 | 6,411 | 490 | Top 500K websites (Chrome) |
| 2,531 | podigee.io | 65 | 17,023 | 5,490 | Top 1M websites (Chrome) |
| 2,783 | shields.io | 65 | 12,173 | 2,654 | not in Chrome's top 1M |
| 2,793 | synthesia.io | 65 | 11,889 | 2,696 | Top 100K websites (Chrome) |
| 2,886 | statuspage.io | 65 | 9,576 | 1,991 | Top 500K websites (Chrome) |
| 2,932 | thenewstack.io | 65 | 7,606 | 1,399 | Top 100K websites (Chrome) |
| 2,936 | material.io | 65 | 7,405 | 1,577 | Top 500K websites (Chrome) |
| 2,947 | home-assistant.io | 65 | 6,943 | 1,003 | Top 50K websites (Chrome) |
| 3,555 | apollo.io | 64 | 8,464 | 3,133 | Top 50K websites (Chrome) |
| 3,565 | veed.io | 64 | 8,295 | 2,736 | Top 10K websites (Chrome) |
| 3,590 | sourceforge.io | 64 | 7,777 | 2,762 | not in Chrome's top 1M |
| 3,623 | readme.io | 64 | 6,928 | 2,497 | not in Chrome's top 1M |
| 3,627 | prometheus.io | 64 | 6,802 | 1,979 | Top 1M websites (Chrome) |
| 3,629 | cncf.io | 64 | 6,742 | 2,106 | Top 1M websites (Chrome) |
| 3,637 | dream.io | 64 | 6,400 | 1,488 | not in Chrome's top 1M |
| 3,645 | angular.io | 64 | 6,162 | 1,647 | not in Chrome's top 1M |
| 3,690 | bitbucket.io | 64 | 4,162 | 921 | Top 1M websites (Chrome) |
| 3,819 | invideo.io | 63 | 12,843 | 7,703 | Top 50K websites (Chrome) |
| 3,996 | icomoon.io | 63 | 10,683 | 5,744 | Top 1M websites (Chrome) |
| 3,999 | reviews.io | 63 | 10,666 | 6,832 | Top 500K websites (Chrome) |
| 4,025 | shinyapps.io | 63 | 10,423 | 4,918 | not in Chrome's top 1M |
| 4,049 | raindrop.io | 63 | 10,165 | 6,953 | Top 500K websites (Chrome) |
| 4,315 | spring.io | 63 | 7,818 | 3,291 | Top 500K websites (Chrome) |
| 4,374 | stocksnap.io | 63 | 7,397 | 3,682 | Top 1M websites (Chrome) |
| 4,410 | terraform.io | 63 | 6,891 | 2,974 | Top 500K websites (Chrome) |
| 4,416 | branch.io | 63 | 6,859 | 2,836 | Top 1M websites (Chrome) |
| 4,433 | snyk.io | 63 | 6,564 | 2,991 | Top 500K websites (Chrome) |
| 4,450 | wiz.io | 63 | 6,287 | 2,413 | Top 500K websites (Chrome) |
| 4,467 | atom.io | 63 | 6,030 | 2,304 | not in Chrome's top 1M |
| 4,497 | swagger.io | 63 | 5,474 | 2,814 | Top 500K websites (Chrome) |
| 4,500 | crowdcast.io | 63 | 5,401 | 2,563 | Top 1M websites (Chrome) |
| 4,535 | pypa.io | 63 | 4,167 | 1,761 | Top 1M websites (Chrome) |
| 4,820 | velog.io | 62 | 10,090 | 10,971 | Top 100K websites (Chrome) |
| 4,846 | urlscan.io | 62 | 9,940 | 8,064 | Top 100K websites (Chrome) |
| 4,884 | hackaday.io | 62 | 9,644 | 7,997 | Top 500K websites (Chrome) |
| 4,966 | tapas.io | 62 | 9,091 | 6,947 | Top 50K websites (Chrome) |
| 4,985 | gate.io | 62 | 8,935 | 9,489 | not in Chrome's top 1M |
| 5,489 | builder.io | 62 | 5,248 | 3,351 | Top 1M websites (Chrome) |
| 5,499 | codesandbox.io | 62 | 5,122 | 2,936 | Top 500K websites (Chrome) |
| 5,509 | qt.io | 62 | 5,039 | 4,107 | Top 500K websites (Chrome) |
| 5,539 | gong.io | 62 | 4,652 | 2,702 | Top 500K websites (Chrome) |
| 5,544 | opentelemetry.io | 62 | 4,621 | 2,811 | Top 500K websites (Chrome) |
| 5,556 | ipfs.io | 62 | 4,503 | 3,108 | not in Chrome's top 1M |
| 5,576 | frame.io | 62 | 4,281 | 2,998 | Top 50K websites (Chrome) |
| 5,583 | jwt.io | 62 | 4,208 | 2,160 | Top 500K websites (Chrome) |
| 5,603 | confluent.io | 62 | 3,862 | 1,975 | Top 500K websites (Chrome) |
| 5,621 | jestjs.io | 62 | 3,232 | 2,089 | not in Chrome's top 1M |
| 5,743 | metooo.io | 61 | 10,782 | 20,439 | not in Chrome's top 1M |
| 5,799 | scrapbox.io | 61 | 10,005 | 14,466 | Top 500K websites (Chrome) |
| 5,873 | facer.io | 61 | 8,902 | 13,560 | Top 500K websites (Chrome) |
| 5,987 | subscribepage.io | 61 | 7,875 | 11,606 | not in Chrome's top 1M |
| 6,243 | rzp.io | 61 | 6,718 | 8,141 | not in Chrome's top 1M |
| 6,317 | hackster.io | 61 | 6,427 | 8,342 | Top 500K websites (Chrome) |
| 6,349 | kumu.io | 61 | 6,270 | 7,591 | Top 1M websites (Chrome) |
| 6,501 | crates.io | 61 | 5,507 | 5,959 | Top 500K websites (Chrome) |
| 6,544 | hunter.io | 61 | 5,258 | 5,100 | Top 500K websites (Chrome) |
| 6,607 | keybase.io | 61 | 4,922 | 5,327 | not in Chrome's top 1M |
| 6,630 | coda.io | 61 | 4,793 | 5,238 | Top 500K websites (Chrome) |
| 6,715 | socket.io | 61 | 4,298 | 3,963 | not in Chrome's top 1M |
| 6,830 | pendo.io | 61 | 3,449 | 3,321 | Top 1M websites (Chrome) |
| 6,836 | ipinfo.io | 61 | 3,378 | 3,057 | Top 100K websites (Chrome) |
| 6,853 | babeljs.io | 61 | 3,150 | 2,915 | not in Chrome's top 1M |
| 6,860 | restream.io | 61 | 3,092 | 2,959 | Top 100K websites (Chrome) |
The # column is the position in the overall top 20,000.