Ranklexa Reviews

clarksonlab.com reviews

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Reviews
Report generated on 2024-12-28 at 05:13:01 (UTC +00:00).
1 day ago
42
100
http://clarksonlab.com/
6 high issues
17.1%
9 medium issues
25.7%
7 low issues
20.0%
13 tests passed
37.1%
3.34 seconds
4.27 kB
34 resources
Insecure
SEO
Title
The title tag is missing or empty.
The title tag must be between 1 and 60 characters.
The current title has 0 characters.
The title tag is the HTML element that specifies the title of the webpage. The title tag is displayed at the top of your browser, in the search results, as well as in the bookmarks bar.
Learn more
Google
Meta description
The meta description tag is missing or empty.
The meta description is an HTML tag that provides a short and accurate summary of the webpage. The meta description is used by search engines to identify a webpage's topic and provide relevant search results.
Learn more
Google
Headings
The headings are properly set.
The h tags represents the headings of the webpage. The h1 tag is the most important h tag, and describes the main topic of the page, while the rest of the tags describe the sub-topics of the webpage.
Learn more
Mozilla
Content keywords
No relevant keywords found on the webpage.
The webpage's content should contain relevant keywords that can also be found in the title of the webpage.
Image keywords
There are 34 images with missing alt attributes.
  1. http://clarksonlab.com/homepage/Barnstead_group.jpg
  2. http://clarksonlab.com/homepage/Thermolyne_group.jpg
  3. http://clarksonlab.com/homepage/LabLine_group.jpg
  4. http://clarksonlab.com/homepage/Electrothermal_group.jpg
  5. http://clarksonlab.com/homepage/Labindustries_group.jpg
  6. http://clarksonlab.com/homepage/STEM_group.jpg
  7. http://clarksonlab.com/homepage/Harvey_group.jpg
  8. http://clarksonlab.com/homepage/PMC_group.jpg
  9. http://clarksonlab.com/homepage/Linear_group.jpg
  10. http://clarksonlab.com/bel/~Images/106250005.jpg
  11. http://clarksonlab.com/bel/~Images/106200015.jpg
  12. http://clarksonlab.com/bel/~Images/B0770.jpg
  13. http://clarksonlab.com/NOVA/BTMeter.jpg
  14. http://clarksonlab.com/Nova/HHmeter.jpg
  15. http://clarksonlab.com/NOVA/buffers-sm2.jpg
  16. http://clarksonlab.com/NOVA/elect-sm.jpg
  17. http://clarksonlab.com/HAN/graphics/hi9828.jpg
  18. http://clarksonlab.com/HAN/graphics/cod.jpg
  19. http://clarksonlab.com/HAN/graphics/pli.jpg
  20. http://clarksonlab.com/HAN/graphics/dist56.jpg
  21. http://clarksonlab.com/HAN/graphics/combo.jpg
  22. http://clarksonlab.com/HAN/graphics/chl.jpg
  23. http://clarksonlab.com/HAN/graphics/pllabdivtesters_1.jpg
  24. http://clarksonlab.com/HAN/graphics/ph.jpg
  25. http://clarksonlab.com/HAN/graphics/adp.jpg
  26. http://clarksonlab.com/HAN/graphics/Testers_Rev2_July2004_1.jpg
  27. http://clarksonlab.com/HAN/graphics/port.jpg
  28. http://clarksonlab.com/HAN/graphics/phep45.jpg
  29. http://clarksonlab.com/HAN/graphics/hydro.jpg
  30. http://clarksonlab.com/Glac_rotanim.gif
  31. http://clarksonlab.com/Glac_shakanim.gif
  32. http://clarksonlab.com/Glac_stirring_gt31an2.gif
  33. http://clarksonlab.com/vee/Images/sibata1.jpg
  34. http://clarksonlab.com/vee/Images/20229-big.gif
The alt attribute specifies an alternate text for an image, if the image cannot be displayed. The alt attribute is also useful for search engines to identify the subject of the image, and helps screen readers describe the image.
Learn more
Google
SEO friendly URL
The URL does not contain any relevant keywords.
http://clarksonlab.com/
The SEO friendly URLs are URLs that contain relevant keywords with the webpage's topic, and contain no special characters besides slashes and dashes.
Learn more
Google
404 page
The website has 404 error pages.
The 404 webpage status informs the users and the search engines that a webpage is missing.
Learn more
Bing
Robots.txt
The webpage can be accessed by search engines.
A robots.txt file inform the search engines which links from the website can be accessed.
Learn more
Bing
Google
Noindex
The webpage does not have a noindex tag set.
The noindex tag instruct the search engines to not index the webpage.
Learn more
Bing
Google
In-page links
The number of links on the webpage is okay.
The in-page links should be kept at a minimum, to avoid issues with search engines not being able to crawl additional links from the webpage.
Language
The webpage does not have a language declared.
The lang attribute declares the webpage's language, helping search engines identify the language in which the content is written, and browsers to offer translation suggestions.
Learn more
Mozilla
Favicon
The webpage does not have a favicon.
The favicon is the icon that is being displayed in the browser's tab, when the webpage is being bookmarked, and sometimes even in search engine results.
Learn more
Google
Performance
Text compression
The HTML file is compressed.
The HTML filesize is 4.27 kB.
The text compression helps speeding up the webpage's load by compressing the HTML's content.
Learn more
Gzip
Brotli
Google
Load time
The webpage load should be under 2.00 seconds.
The webpage loaded in 3.34 seconds.
The load time indicates the HTML's total load time, and does not include the external resources, such as images, scripts, or other resources.
Page size
The size of the HTML webpage is 4.27 kB.
The page size indicates the HTML's total size, and does not include the external resources, such as images, scripts, or other resources.
HTTP requests
There are fewer than 34 HTTP requests on the webpage.
The HTTP requests represents the number of external resources present on the webpage.
Image format
There are 34 images that are not using the AVIF, WebP format.
  1. http://clarksonlab.com/homepage/Barnstead_group.jpg
  2. http://clarksonlab.com/homepage/Thermolyne_group.jpg
  3. http://clarksonlab.com/homepage/LabLine_group.jpg
  4. http://clarksonlab.com/homepage/Electrothermal_group.jpg
  5. http://clarksonlab.com/homepage/Labindustries_group.jpg
  6. http://clarksonlab.com/homepage/STEM_group.jpg
  7. http://clarksonlab.com/homepage/Harvey_group.jpg
  8. http://clarksonlab.com/homepage/PMC_group.jpg
  9. http://clarksonlab.com/homepage/Linear_group.jpg
  10. http://clarksonlab.com/bel/~Images/106250005.jpg
  11. http://clarksonlab.com/bel/~Images/106200015.jpg
  12. http://clarksonlab.com/bel/~Images/B0770.jpg
  13. http://clarksonlab.com/NOVA/BTMeter.jpg
  14. http://clarksonlab.com/Nova/HHmeter.jpg
  15. http://clarksonlab.com/NOVA/buffers-sm2.jpg
  16. http://clarksonlab.com/NOVA/elect-sm.jpg
  17. http://clarksonlab.com/HAN/graphics/hi9828.jpg
  18. http://clarksonlab.com/HAN/graphics/cod.jpg
  19. http://clarksonlab.com/HAN/graphics/pli.jpg
  20. http://clarksonlab.com/HAN/graphics/dist56.jpg
  21. http://clarksonlab.com/HAN/graphics/combo.jpg
  22. http://clarksonlab.com/HAN/graphics/chl.jpg
  23. http://clarksonlab.com/HAN/graphics/pllabdivtesters_1.jpg
  24. http://clarksonlab.com/HAN/graphics/ph.jpg
  25. http://clarksonlab.com/HAN/graphics/adp.jpg
  26. http://clarksonlab.com/HAN/graphics/Testers_Rev2_July2004_1.jpg
  27. http://clarksonlab.com/HAN/graphics/port.jpg
  28. http://clarksonlab.com/HAN/graphics/phep45.jpg
  29. http://clarksonlab.com/HAN/graphics/hydro.jpg
  30. http://clarksonlab.com/Glac_rotanim.gif
  31. http://clarksonlab.com/Glac_shakanim.gif
  32. http://clarksonlab.com/Glac_stirring_gt31an2.gif
  33. http://clarksonlab.com/vee/Images/sibata1.jpg
  34. http://clarksonlab.com/vee/Images/20229-big.gif
The images format represents the images that are not served in a next-generation file format. Images served in a next-generation format improve the webpage's load performance.
Learn more
Google
JavaScript defer
The javascript resources have the defer attribute set.
The defer attribute allows the browser to download the scripts in parallel and execute them after the webpage has been parsed, improving the webpage's load performance.
Learn more
Google
DOM size
The DOM size is optimal.
The HTML file has 215 DOM nodes.
The DOM size indicates the number of nodes the HTML webpage has.
Learn more
Google
DOCTYPE
The webpage does not have the DOCTYPE declaration tag set.
The DOCTYPE declaration tag defines which version of HTML the webpage is using, making compliant browsers render the webpage properly.
Learn more
W3C
Mozilla
Security
HTTPS encryption
The webpage does not use HTTPS encryption.
The HTTPS encryption helps protecting the user's security and privacy.
Learn more
Google
Mixed content
There are no mixed content resources on the webpage.
The mixed content is the content that is loaded over the HTTP connection while the webpage itself was loaded over HTTPS connection.
Learn more
Mozilla
Google
Server signature
The webpage has a public server signature.
openresty/1.25.3.1
The server signature is the public identity of a web server which contains information that could be used to exploit known vulnerabilities.
Learn more
nginx
Apache
Unsafe cross-origin links
The webpage does not have unsafe cross-origin links.
HTST
The webpage does not have the HTTP Strict-Transport-Security header set.
The HTTP Strict-Transport-Security header is used to force the browser to use the HTTPS protocol when loading the webpage.
Learn more
Mozilla
Plaintext email
Email addresses posted in public are likely to be fetched by crawlers and then collected in lists used for spam.
Miscellaneous
Structured data
There are no structured data tags on the webpage.
The structured data tags help the search engines better understand the content of the webpage, and allows them to create rich snippets in search results.
Learn more
Twitter
Schema.org
Open Graph
Bing
Google
Meta viewport
The meta viewport tag is missing or is empty.
The meta viewport tag instruct the browsers how to render the viewport of the webpage.
Learn more
Mozilla
Google
Character set
The webpage does not have a charset declared.
The meta charset tag specifies the character encoding, helping the browsers to better render the characters and symbols on the webpage.
Learn more
Mozilla
Sitemap
No sitemaps found.
Sitemaps inform search engines about pages available for crawling on the website.
Learn more
Bing
Google
Social
The webpage does not contain any social links.
Social media presence is becoming increasingly important as a ranking factor for search engines to validate a website's trustworthiness and authority.
Content length
There are less than 500 words on the webpage.
The webpage has 226 words.
The content length represents the number of words found on the webpage. The webpage should contain a decent amount of words.
Learn more
Google
Text to HTML ratio
The text to HTML ratio is under 10%.
The text to HTML ratio is 9%.
The text to HTML ratio represents the percentage of actual text compared to the percentage of HTML code on the webpage.
Inline CSS
The webpage contains inline CSS code.
  1. font-size: x-small;
  2. font-size: x-small;
  3. font-size: x-small;
  4. font-size: x-small;
  5. font-size: x-small;
  6. font-size: x-small;
  7. font-size: x-small;
  8. font-size: x-small;
  9. font-size: x-small;
  10. font-size: x-small;
  11. font-size: x-small;
  12. font-size: x-small;
  13. font-size: x-small;
  14. font-size: x-small;
  15. font-size: x-small;
  16. font-size: x-small;
  17. font-size: x-small;
  18. font-size: x-small;
  19. font-size: x-small;
  20. font-size: x-small;
  21. font-size: x-small;
  22. font-size: x-small;
  23. font-size: x-small;
  24. font-size: x-small;
  25. font-size: x-small;
  26. font-size: x-small;
  27. font-size: x-small;
  28. font-size: x-small;
  29. font-size: x-small;
  30. font-size: x-small;
  31. color: #0000ff;
  32. font-size: x-small;
  33. font-size: x-small;
  34. font-size: x-small;
  35. font-size: x-small;
  36. font-size: x-small;
  37. font-size: x-small;
  38. font-size: x-small;
  39. color: #0000ff;
  40. color: #0000ff;
  41. font-size: x-small;
  42. font-size: x-small;
  43. font-size: x-small;
  44. font-size: x-small;
  45. font-size: x-small;
  46. font-size: x-small;
  47. font-size: x-small;
  48. font-size: x-small;
  49. color: #0000ff;
  50. font-size: x-small;
  51. font-size: x-small;
  52. font-size: x-small;
  53. font-size: x-small;
  54. color: #0000ff;
  55. font-size: x-small;
  56. font-size: x-small;
  57. color: #0000ff;
  58. color: #0000ff;
  59. font-size: x-small;
  60. color: #0000ff;
  61. font-size: x-small;
  62. color: #0000ff;
  63. color: #0000ff;
  64. font-size: x-small;
  65. color: #0000ff;
  66. font-size: x-small;
The style attribute contains CSS style rules that are applied to the element. Inline CSS code unnecessarily increases the webpage's size, and can be moved in an external CSS file.
Learn more
Mozilla
Deprecated HTML
There are no deprecated HTML tags on the webpage.
The deprecated tags represents the tags that are not supported HTML5 standard anymore, and could cause the webpage to be rendered incorrectly.
Learn more
W3C