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100
Competitive Programming | Participate & Learn | CodeChef
Learn competitive programming with the help of CodeChef's coding competitions. Take part in these online coding contests to level up your skills
https://www.codechef.com/
2 high issues
6.1%
4 medium issues
12.1%
4 low issues
12.1%
23 tests passed
69.7%
0.19 seconds
7.88 kB
37 resources
Secure
Seo
Title
The title tag is perfect.
Competitive Programming | Participate & Learn | CodeChef
Meta description
The meta description tag is good.
Learn competitive programming with the help of CodeChef's coding competitions. Take part in these online coding contests to level up your skills
Headings
There is no h1 tag on the webpage.
  1. Practice
  2. Compete
  3. Self Learning
  4. CodeChef Pro
  5. Top Performers & Contributors
Content keywords
The content has relevant keywords.
programmingparticipatelearncodechef
Image keywords
There are 14 images with missing alt attributes.
  1. https://cdn.codechef.com/download/banner/1667465184.jpg
  2. https://cdn.codechef.com/download/banner/mobile-1667465184.jpg
  3. https://cdn.codechef.com/download/banner/1667460129.jpg
  4. https://cdn.codechef.com/download/banner/mobile-1667460129.jpg
  5. https://cdn.codechef.com/download/banner/1667461539.jpg
  6. https://cdn.codechef.com/download/banner/mobile-1667461539.jpg
  7. https://cdn.codechef.com/download/banner/1664198618.png
  8. https://cdn.codechef.com/download/banner/mobile-1664198618.png
  9. https://cdn.codechef.com/download/banner/1664184002.png
  10. https://cdn.codechef.com/download/banner/mobile-1664184002.png
  11. https://cdn.codechef.com/download/banner/1666245010.jpg
  12. https://cdn.codechef.com/download/banner/mobile-1666245010.jpg
  13. https://cdn.codechef.com/images/home/self-learning-section.svg
  14. https://dc.ads.linkedin.com/collect/?pid=93463&fmt=gif
SEO friendly URL
The URL is SEO friendly.
https://www.codechef.com/
404 page
The website has 404 error pages.
https://www.codechef.com/404-e72010fa2646334e66a9738f802861c3
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 has the language declared.
en
Favicon
The webpage does not have a favicon.
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.19 seconds.
Page size
The size of the HTML webpage is 7,883.00.
HTTP requests
There are fewer than 37 HTTP requests on the webpage.
  1. https://browser.sentry-cdn.com/5.15.5/bundle.min.js
  2. https://www.googleoptimize.com/optimize.js?id=OPT-WFQ23G3
  3. https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js
  4. https://www.codechef.com/sites/all/themes/mallow/js/mallow.min.js?v=1e4b162dab1b6cde55342b1bc20ba3fb
  5. https://www.codechef.com/em/libs/common/common.js?v=90e62af60811f3b3f517bfcd9a986d55
  6. https://www.codechef.com/misc/drupal.js
  7. https://www.codechef.com/em/libs/cryptojs/aes.js
  8. https://www.codechef.com/sites/all/themes/mallow/js/todo.min.js?v=3c7dcdaea2f8fb977e77802f9ef8595f
  9. https://cdn.codechef.com/js/tiny-slider-2.9.3.js
  10. https://www.codechef.com/sites/all/themes/mallow/js/mallow.slider.js?v=90c1b846dabb32c295ac44633f0d37f2
  11. https://cdn.codechef.com/js/lottie-player-1.5.7.js
  12. https://www.codechef.com/sites/all/modules/codechef_common_functions/js/codechefGenericModal.js
  13. https://www.codechef.com/sites/all/modules/codechef_common_functions/codechef_common_functions.js?v= 14a693cb7b4d17e526c6987eaad20e73
  14. https://www.codechef.com/sites/all/modules/codechef_alerts/codechef_alerts.js?v= 649c43b6894169b33b5557aa0374459d
  1. https://www.codechef.com/sites/all/themes/mallow/css/mallow.css?v=225e8b58220bad32fe89f63635e5af8a
  2. https://fonts.googleapis.com/css2?family=Merriweather:wght@300;400;700;900&family=Open+Sans:wght@300;400;600;700;800&family=Roboto+Mono:wght@100;300;400;500;700&family=Lato:wght@100;300;400;700;900&display=swap
  3. https://cdn.codechef.com/css/tiny-slider-2.9.3.css
  4. https://www.codechef.com/misc/jquery-popup-overlay/popupoverlay.css
  5. https://www.codechef.com/sites/all/themes/abessive/css/modal.css
  1. https://cdn.codechef.com/images/cc-logo.svg
  2. https://cdn.codechef.com/images/cc-logo-mobile-1.svg
  3. https://cdn.codechef.com/download/banner/1667465184.jpg
  4. https://cdn.codechef.com/download/banner/mobile-1667465184.jpg
  5. https://cdn.codechef.com/download/banner/1667460129.jpg
  6. https://cdn.codechef.com/download/banner/mobile-1667460129.jpg
  7. https://cdn.codechef.com/download/banner/1667461539.jpg
  8. https://cdn.codechef.com/download/banner/mobile-1667461539.jpg
  9. https://cdn.codechef.com/download/banner/1664198618.png
  10. https://cdn.codechef.com/download/banner/mobile-1664198618.png
  11. https://cdn.codechef.com/download/banner/1664184002.png
  12. https://cdn.codechef.com/download/banner/mobile-1664184002.png
  13. https://cdn.codechef.com/download/banner/1666245010.jpg
  14. https://cdn.codechef.com/download/banner/mobile-1666245010.jpg
  15. https://cdn.codechef.com/images/home/self-learning-section.svg
  16. https://cdn.codechef.com/images/home/pro.svg
  17. https://dc.ads.linkedin.com/collect/?pid=93463&fmt=gif
  1. https://www.googletagmanager.com/ns.html?id=GTM-TV5X2M
Image format
There are 13 images that are not using the AVIF, WebP format.
  1. https://cdn.codechef.com/download/banner/1667465184.jpg
  2. https://cdn.codechef.com/download/banner/mobile-1667465184.jpg
  3. https://cdn.codechef.com/download/banner/1667460129.jpg
  4. https://cdn.codechef.com/download/banner/mobile-1667460129.jpg
  5. https://cdn.codechef.com/download/banner/1667461539.jpg
  6. https://cdn.codechef.com/download/banner/mobile-1667461539.jpg
  7. https://cdn.codechef.com/download/banner/1664198618.png
  8. https://cdn.codechef.com/download/banner/mobile-1664198618.png
  9. https://cdn.codechef.com/download/banner/1664184002.png
  10. https://cdn.codechef.com/download/banner/mobile-1664184002.png
  11. https://cdn.codechef.com/download/banner/1666245010.jpg
  12. https://cdn.codechef.com/download/banner/mobile-1666245010.jpg
  13. https://dc.ads.linkedin.com/collect/?pid=93463&fmt=gif
JavaScript defer
The are 14 javascript resources without the defer attribute.
  1. https://browser.sentry-cdn.com/5.15.5/bundle.min.js
  2. https://www.googleoptimize.com/optimize.js?id=OPT-WFQ23G3
  3. https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js
  4. https://www.codechef.com/sites/all/themes/mallow/js/mallow.min.js?v=1e4b162dab1b6cde55342b1bc20ba3fb
  5. https://www.codechef.com/em/libs/common/common.js?v=90e62af60811f3b3f517bfcd9a986d55
  6. https://www.codechef.com/misc/drupal.js
  7. https://www.codechef.com/em/libs/cryptojs/aes.js
  8. https://www.codechef.com/sites/all/themes/mallow/js/todo.min.js?v=3c7dcdaea2f8fb977e77802f9ef8595f
  9. https://cdn.codechef.com/js/tiny-slider-2.9.3.js
  10. https://www.codechef.com/sites/all/themes/mallow/js/mallow.slider.js?v=90c1b846dabb32c295ac44633f0d37f2
  11. https://cdn.codechef.com/js/lottie-player-1.5.7.js
  12. https://www.codechef.com/sites/all/modules/codechef_common_functions/js/codechefGenericModal.js
  13. https://www.codechef.com/sites/all/modules/codechef_common_functions/codechef_common_functions.js?v= 14a693cb7b4d17e526c6987eaad20e73
  14. https://www.codechef.com/sites/all/modules/codechef_alerts/codechef_alerts.js?v= 649c43b6894169b33b5557aa0374459d
DOM size
The DOM size is optimal.
The HTML file has 535 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://www.codechef.com/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage has a public server signature.
nginx
Unsafe cross-origin links
The webpage has 5 unsafe cross-origin links.
Plaintext email
The webpage contains plaintext emails.
  1. 2225a451b83d4109b41089a72f07b2c2@o4503999244926976.ingest.sentry.io
Miscellaneous
Structured data
The webpage has structured data.
      Meta viewport
      The webpage has a meta viewport tag set.
      width=device-width, initial-scale=1
      Character set
      The webpage has a charset value set.
      utf-8
      Sitemap
      The website has sitemaps.
      1. https://www.codechef.com/sitemap.xml
      Social
      The webpage has 5 social links.
      Content length
      The webpage has 620 words.
      Text to HTML ratio
      The text to HTML ratio is under 10%
      The text to HTML ratio is 8%.
      Inline CSS
      The webpage contains inline CSS code.
      1. display:none;visibility:hidden
      2. background: url('https://cdn.codechef.com/download/banner/1667465184.jpg');
      3. backdrop-filter: blur(30px);
      4. background: url('https://cdn.codechef.com/download/banner/1667460129.jpg');
      5. backdrop-filter: blur(30px);
      6. background: url('https://cdn.codechef.com/download/banner/1667461539.jpg');
      7. backdrop-filter: blur(30px);
      8. background: url('https://cdn.codechef.com/download/banner/1664198618.png');
      9. backdrop-filter: blur(30px);
      10. background: url('https://cdn.codechef.com/download/banner/1664184002.png');
      11. backdrop-filter: blur(30px);
      12. background: url('https://cdn.codechef.com/download/banner/1666245010.jpg');
      13. backdrop-filter: blur(30px);
      14. background:#D0011B;
      15. background:#D0011B;
      16. background:#D0011B;
      17. background:#D0011B;
      18. background:#D0011B;
      19. background:#FF7F00;
      20. background:#666666;
      21. background:#FFBF00;
      22. background:#FFBF00;
      23. background:#FFBF00;
      24. display:none;
      25. display: none;
      Deprecated HTML
      There are no deprecated HTML tags on the webpage.