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Search Engine Optimization Overview
63
100
slither.io
The smash-hit game! Play with millions of players around the world and try to become the longest of the day!
http://slither.io/
4 high issues
12.1%
5 medium issues
15.2%
5 low issues
15.2%
19 tests passed
57.6%
0.10 seconds
3.21 kB
10 resources
Insecure
Seo
Title
The title tag is perfect.
slither.io
Meta description
The meta description tag is good.
The smash-hit game! Play with millions of players around the world and try to become the longest of the day!
Headings
There is no h1 tag on the webpage.
Content keywords
The content has relevant keywords.
slitherio
Image keywords
There are 9 images with missing alt attributes.
  1. http://slither.io/s/facebook.png
  2. http://slither.io/s/twitter3.png
  3. http://slither.io/s/changeskin2.png
  4. http://slither.io/s/entercode4.png
  5. http://slither.io/s/buildskin.png
  6. http://slither.io/s/selectcosmetic2.png
  7. http://slither.io/s/highquality.png
  8. http://slither.io/s/prev3.png
  9. http://slither.io/s/next3.png
SEO friendly URL
The URL is SEO friendly.
http://slither.io/
404 page
The website does not have 404 error pages.
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.
Language
The webpage does not have a language declared.
Favicon
The webpage has a favicon.
http://slither.io/s/favicon.png
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.10 seconds.
Page size
The size of the HTML webpage is 3,211.00.
HTTP requests
There are fewer than 10 HTTP requests on the webpage.
  1. http://slither.io/s/game832434.js
  1. http://slither.io/s/facebook.png
  2. http://slither.io/s/twitter3.png
  3. http://slither.io/s/changeskin2.png
  4. http://slither.io/s/entercode4.png
  5. http://slither.io/s/buildskin.png
  6. http://slither.io/s/selectcosmetic2.png
  7. http://slither.io/s/highquality.png
  8. http://slither.io/s/prev3.png
  9. http://slither.io/s/next3.png
Image format
There are 9 images that are not using the AVIF, WebP format.
  1. http://slither.io/s/facebook.png
  2. http://slither.io/s/twitter3.png
  3. http://slither.io/s/changeskin2.png
  4. http://slither.io/s/entercode4.png
  5. http://slither.io/s/buildskin.png
  6. http://slither.io/s/selectcosmetic2.png
  7. http://slither.io/s/highquality.png
  8. http://slither.io/s/prev3.png
  9. http://slither.io/s/next3.png
JavaScript defer
The are 1 javascript resources without the defer attribute.
  1. http://slither.io/s/game832434.js
DOM size
The DOM size is optimal.
The HTML file has 71 DOM nodes.
Security
HTTPS encryption
The webpage does not use HTTPS encryption.
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 1 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.
    minimal-ui, user-scalable=no, initial-scale=0.7, maximum-scale=0.7, width=device-width
    Character set
    The webpage does not have a charset declared.
    Sitemap
    No sitemaps found.
    Social
    The webpage does not contain any social links.
    Content length
    The are less than 500 words on the webpage.
    The webpage has 290 words.
    Text to HTML ratio
    The text to HTML ratio is 17%.
    Inline CSS
    The webpage contains inline CSS code.
    1. background: #161c22;
    2. position: fixed; left: 0px; top: 0px;
    3. position: fixed; left: 0px; top: 0px; width: 100%; height: 100%; z-index: 20; margin-top: 64px;
    4. margin-left: auto; margin-right: auto; text-align: center; width: 450px; height: 115px; margin-top: 50px;
    5. position: absolute; z-index: 999999;
    6. margin-left: auto; margin-right: auto; text-align: center; margin-top: 44px; font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; font-size: 15px; color: #FFFFFF;
    7. margin-left: auto; margin-right: auto; width: 360px; height: 30px; color: #8068C0; text-align: center; font-size: 14px; font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; opacity: 0;
    8. margin-left: auto; margin-right: auto; text-align: center;
    9. width: 244px; margin-top: 34px; background: #4C447c; box-shadow: 0px 6px 50px rgba(0,0,0,1); opacity: 0;
    10. width: 220px; height: 24px;
    11. display: none; font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif; font-size: 18px; color: #FFFFFF; margin-top: 22px;
    12. font-size: 24px; margin-top: 12px;
    13. opacity: .6; margin-top: 12px;
    14. width: 444px; margin-top: 50px; background: #00A4CF; box-shadow: 0px 0px 50px rgba(64,64,255,1);
    15. width: 420px; height: 24px; color:#FFFFFF;
    16. margin-left: auto; margin-right: auto; text-align: center;
    17. margin-left: auto; margin-right: auto; text-align: center; display: none;
    18. opacity: 0; position: fixed; left: 0px; top: 0px; z-index: 21;
    19. position: fixed; bottom: 30px; opacity: .4; z-index: 50; display: none;
    20. position: fixed; bottom: 20px; z-index: 50;
    21. width:80px; height:74px;
    22. position: fixed; bottom: 20px; z-index: 50;
    23. width:80px; height:74px;
    24. position: fixed; left: 20px; bottom: 16px; z-index: 50; display: none;
    25. width:95px; height:89px;
    26. position: fixed; right: 20px; top: 16px; z-index: 50; display: none;
    27. width:87px; height:77px;
    28. position: fixed; right: 20px; bottom: 16px; z-index: 50; display: none;
    29. width:102px; height:89px;
    30. position: fixed; right: 14px; bottom: 144px; z-index: 50; display: none;
    31. width:119px; height:87px;
    32. position: fixed; right: 20px; top: 16px; z-index: 50;
    33. width:90px; height:87px;
    34. position: fixed; font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif; font-size: 13px; color: #408040; right: 10px; top: 10px; width: 260px; height: 400px; text-align: right; display: none;
    35. position: fixed; font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif; font-size: 12px; left: 10px; bottom: 10px; width: 260px; height: 20px; text-align: center; color: #404880;
    36. display: none; opacity: 0; position: fixed; z-index: 52;
    37. width:87px; height:88px;
    38. display: none; opacity: 0; position: fixed; z-index: 52;
    39. width:87px; height:88px;
    40. position: fixed; left: 0px; top: 0px; background: rgba(32, 40, 48, 1); z-index: 53; display: none; opacity: 0;
    Deprecated HTML
    There are no deprecated HTML tags on the webpage.