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ScienceAlert : The Best in Science News And Amazing Breakthroughs
The latest science news. Publishing independent, fact-checked reporting on health, space, nature, technology, and the environment.
https://www.sciencealert.com/
3 high issues
9.1%
3 medium issues
9.1%
3 low issues
9.1%
24 tests passed
72.7%
1.69 seconds
31.08 kB
9 resources
Secure
Seo
Title
The title tag must be between 1 and 60 characters.
The current title has 65 characters.
Meta description
The meta description tag is good.
The latest science news. Publishing independent, fact-checked reporting on health, space, nature, technology, and the environment.
Headings
There is no h1 tag on the webpage.
Content keywords
The content has relevant keywords.
sciencealertthebestinnewsand
Image keywords
There are 5 images with missing alt attributes.
  1. https://www.sciencealert.com/images/2022/10/MummyInfantAustria-642x260.jpg
  2. https://www.sciencealert.com/images/2022/10/Sun-tree-rings-half-and-half-642x260.jpg
  3. https://www.sciencealert.com/images/2022/10/KendricksCaveJaw-642x260.jpg
  4. https://www.sciencealert.com/images/2022/10/abstract-pretty-star-thing-642x260.jpg
  5. https://b.scorecardresearch.com/p?c1=2&c2=10055482&cv=2.0&cj=1
SEO friendly URL
The URL is SEO friendly.
https://www.sciencealert.com/
404 page
The website has 404 error pages.
https://www.sciencealert.com/404-cb4d726196da53234471840479f3d053
Robots.txt
The webpage can be accessed by search engines.
Noindex
The webpage does not have a noindex tag set.
In-page links
The number of links on the webpage is okay.
  1. https://www.sciencealert.com/
  2. https://www.sciencealert.com/
  3. Space
  4. Health
  5. Environment
  6. Humans
  7. Tech
  8. Nature
  9. Physics
  10. Society
  11. Opinion
  12. Explainer
  13. About Us
  14. Our Team
  15. https://www.sciencealert.com/feed
  16. Contact
  17. Privacy
  18. Accessibility
  19. Terms
  20. https://www.sciencealert.com/we-thought-these-animals-were-silent-scientists-just-found-their-voices
  21. Nature
  22. We Thought These Animals Were Silent. Scientists Just Found Their Voices
  23. Purified Sand Particles Have Anti-Obesity Effects, Scientists Confirm
  24. Health
  25. New Technique For Decoding People's Thoughts Can Now Be Done From a Distance
  26. Tech
  27. Hidden 'Oasis of Life' Discovered Deep Under The Ocean in The Maldives
  28. Nature
  29. https://www.sciencealert.com/this-incredible-photo-of-an-ants-face-is-like-something-out-of-a-nightmare
  30. This Incredible Photo of an Ant's Face Is Like Something Out of a Nightmare
  31. Nature
  32. https://www.sciencealert.com/time-cells-in-the-human-brain-encode-the-flow-of-time-scientists-say
  33. 'Time Cells' in The Human Brain Encode The Flow of Time, Scientists Say
  34. Humans
  35. https://www.sciencealert.com/many-baby-sea-turtles-never-make-it-to-the-sea-this-genius-idea-could-save-them
  36. Many Baby Sea Turtles Never Make It to The Sea. This Genius Idea Could Save Them
  37. Nature
  38. https://www.sciencealert.com/hubble-found-an-eerie-cosmic-keyhole-deep-in-space-and-were-in-awe
  39. Hubble Found an Eerie 'Cosmic Keyhole' Deep in Space And We're in Awe
  40. Space
  41. https://www.sciencealert.com/nasa-detects-more-than-50-methane-super-emitter-zones-around-the-world
  42. NASA Detects More Than 50 Methane 'Super-Emitter' Zones Around The World
  43. Environment
  44. https://www.sciencealert.com/nasas-lucy-probe-shows-the-vast-space-between-us-and-the-moon
  45. NASA's Lucy Probe Shows The Vast Space Between Us And The Moon
  46. Space
  47. https://www.sciencealert.com/ancient-traces-of-life-may-still-linger-on-mars-experiment-suggests
  48. Ancient Traces of Life May Still Linger on Mars, Experiment Suggests
  49. Space
  50. https://www.sciencealert.com/mummified-baby-from-centuries-ago-may-have-died-from-lack-of-sunlight
  51. Mummified Baby From Centuries Ago May Have Died From Lack of Sunlight
  52. Humans
  53. https://www.sciencealert.com/tree-rings-chronicle-a-mysterious-cosmic-storm-that-strikes-every-thousand-years
  54. Tree Rings Chronicle a Mysterious Cosmic Storm That Strikes Every Thousand Years
  55. Space
  56. https://www.sciencealert.com/ancient-15000-year-old-viruses-found-in-melting-tibetan-glaciers
  57. Ancient 15,000-Year-Old Viruses Found in Melting Tibetan Glaciers
  58. Nature
  59. https://www.sciencealert.com/mystery-of-earths-missing-mineral-has-been-solved-in-a-hot-new-experiment
  60. Mystery of Earth's Missing Mineral Has Been Solved in a Hot New Experiment
  61. Nature
  62. https://www.sciencealert.com/new-study-suggests-aliens-dont-visit-us-because-our-sun-is-too-boring
  63. New Study Suggests Aliens Don't Visit Us Because Our Sun Is Too Boring
  64. Space
  65. https://www.sciencealert.com/giant-us-study-identifies-best-age-to-quit-smoking-to-avoid-death-risks
  66. Giant US Study Identifies Best Age to Quit Smoking to Avoid Death Risks
  67. Health
  68. https://www.sciencealert.com/this-tentacled-microbe-is-so-rare-its-only-been-found-four-times
  69. This Tentacled Microbe Is So Rare, It's Only Been Found Four Times
  70. Nature
  71. https://www.sciencealert.com/oldest-human-dna-in-uk-reveals-ancient-peoples-emerging-from-the-ice-age
  72. Oldest Human DNA in UK Reveals Ancient Peoples Emerging From The Ice Age
  73. Humans
  74. https://www.sciencealert.com/mysterious-object-may-be-a-strange-star-made-out-of-quarks-scientists-say
  75. Mysterious Object May Be a 'Strange Star' Made Out of Quarks, Scientists Say
  76. Space
  77. 2
  78. 3
  79. 4
  80. 5
  81. View Archive
  82. 2
  83. 3
  84. 4
  85. 5
  86. 6
  87. 7
  88. 8
  89. 9
  90. View Archive
Language
The webpage has the language declared.
en-US
Favicon
The webpage has a favicon.
https://www.sciencealert.com/images/2022/08/cropped-sa-rounded-favicon-180x180.png
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 1.69 seconds.
Page size
The size of the HTML webpage is 31,075.00.
HTTP requests
There are fewer than 9 HTTP requests on the webpage.
  1. https://6093eccf-6734-4877-ac8b-83d6d0e27b46.edge.permutive.app/6093eccf-6734-4877-ac8b-83d6d0e27b46-web.js
  2. https://freyr.futurecdn.net/freyr.js
  3. https://www.sciencealert.com/wp-includes/js/jquery/jquery.js?ver=latest
  4. https://www.sciencealert.com/wp-content/themes/science-alert/dist/js/main.min.js?ver=1664923006
  5. https://cse.google.com/cse.js?cx=009882534323254498007%3A0ejrj_dbalc&ver=5.8.6
  6. https://www.sciencealert.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
  1. https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700&family=Source+Sans+Pro:wght@400;600&display=swap
  1. https://www.sciencealert.com/images/2022/10/ATuataraLookingAtYou-642x260.jpg
  2. https://b.scorecardresearch.com/p?c1=2&c2=10055482&cv=2.0&cj=1
Image format
There are 18 images that are not using the AVIF, WebP format.
  1. https://www.sciencealert.com/images/2022/10/ATuataraLookingAtYou-642x260.jpg
  2. https://www.sciencealert.com/images/2022/10/AntFaceInCloseUp-642x260.jpg
  3. https://www.sciencealert.com/images/2022/10/TimeCellsIllustration-642x260.jpg
  4. https://www.sciencealert.com/images/2022/10/BabySeaTurtleFacesOcean-642x260.jpg
  5. https://www.sciencealert.com/images/2022/10/CosmicKeyhole1-642x260.jpg
  6. https://www.sciencealert.com/images/2022/10/MethanePlume_NASA-642x260.jpg
  7. https://www.sciencealert.com/images/2022/10/BrightMoonWithCraters-642x260.jpg
  8. https://www.sciencealert.com/images/2022/10/CloseUpOfOrangeBacterialColonyOnYellowAgarPlate-642x260.jpg
  9. https://www.sciencealert.com/images/2022/10/MummyInfantAustria-642x260.jpg
  10. https://www.sciencealert.com/images/2022/10/Sun-tree-rings-half-and-half-642x260.jpg
  11. https://www.sciencealert.com/images/2022/10/BacteriophageOnBacteria-642x260.jpg
  12. https://www.sciencealert.com/images/2022/10/MantleMinerals-642x260.jpg
  13. https://www.sciencealert.com/images/2022/10/UFOAbovePalmTreesGreenSky-642x260.jpg
  14. https://www.sciencealert.com/images/2022/10/HandHoldsCigaretteAgainstSky-642x260.jpg
  15. https://www.sciencealert.com/images/2022/10/LegendreaLoyezaeWithTrailingTentacles-642x260.jpg
  16. https://www.sciencealert.com/images/2022/10/KendricksCaveJaw-642x260.jpg
  17. https://www.sciencealert.com/images/2022/10/abstract-pretty-star-thing-642x260.jpg
  18. https://b.scorecardresearch.com/p?c1=2&c2=10055482&cv=2.0&cj=1
JavaScript defer
The are 5 javascript resources without the defer attribute.
  1. https://6093eccf-6734-4877-ac8b-83d6d0e27b46.edge.permutive.app/6093eccf-6734-4877-ac8b-83d6d0e27b46-web.js
  2. https://freyr.futurecdn.net/freyr.js
  3. https://www.sciencealert.com/wp-includes/js/jquery/jquery.js?ver=latest
  4. https://www.sciencealert.com/wp-content/themes/science-alert/dist/js/main.min.js?ver=1664923006
  5. https://cse.google.com/cse.js?cx=009882534323254498007%3A0ejrj_dbalc&ver=5.8.6
DOM size
The DOM size is optimal.
The HTML file has 503 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://www.sciencealert.com/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage has a public server signature.
cloudflare
Unsafe cross-origin links
The webpage has 3 unsafe cross-origin links.
Plaintext email
The webpage does not contain any plaintext emails.
Miscellaneous
Structured data
The webpage has structured data.
        Meta viewport
        The webpage has a meta viewport tag set.
        width=device-width, initial-scale=1, shrink-to-fit=no, maximum-scale=12.0, minimum-scale=.25, user-scalable=yes
        Character set
        The webpage has a charset value set.
        UTF-8
        Sitemap
        The website has sitemaps.
        1. https://www.sciencealert.com/30-day-sitemap.xml
        2. https://www.sciencealert.com/news-sitemap.xml
        Social
        The webpage has 3 social links.
        Content length
        The webpage has 648 words.
        Text to HTML ratio
        The text to HTML ratio is under 10%
        The text to HTML ratio is 3%.
        Inline CSS
        The webpage contains inline CSS code.
        1. fill:none;stroke:#000
        2. fill:none;stroke:#000
        3. fill:none;stroke:#000
        4. fill:none;stroke:#000
        5. fill:none;stroke:#000
        6. fill:none;stroke:#000
        7. fill:none;stroke:#000
        8. fill:none;stroke:#000
        9. fill:none;stroke:#000
        10. fill:none;stroke:#000
        11. position: absolute; left: -5000px;
        12. text-align: center;
        13. text-align: center
        14. color: #6f7d16
        15. color: #0074c7
        16. color: #d600b5
        17. color: #6f7d16
        18. color: #6f7d16
        19. color: #8c16b7
        20. color: #6f7d16
        21. color: #153c84
        22. text-align: center
        23. color: #128157
        24. color: #153c84
        25. color: #153c84
        26. color: #8c16b7
        27. min-height: 250px;
        28. text-align: center;
        29. color: #153c84
        30. color: #6f7d16
        31. color: #6f7d16
        32. color: #153c84
        33. text-align: center;
        34. color: #0074c7
        35. color: #6f7d16
        36. color: #8c16b7
        37. color: #153c84
        38. min-height: 600px
        39. fill:#fff
        40. fill:#feba11
        41. fill:#fff
        42. fill:#feba11
        43. position: absolute; left: -5000px;
        Deprecated HTML
        There are no deprecated HTML tags on the webpage.