WWW.COMPUTER-PDF.COM Website Review

Pages Indexed

Bing:
Google:

Page Information

Title:
Free Computer Science Courses: Learn Online
Length: 43 character(s); Best length: 10 ~ 60 character(s)
Meta description:
Download 1000+ free computer PDFs - coding tutorials, cybersecurity guides, and IT certifications. Learn programming, networking, and tech skills instantly.
Length: 156 character(s); Best length: 50 ~ 160 character(s)
Meta keywords:
Length: 0 character(s); Best length: 10 ~ 255 character(s)

The length of your meta keywords seems to be outside the recommended range. Ideally, a meta keywords should be between 10 and 255 characters, including spaces.

Meta keywords are a specific type of meta tag that appear in the HTML code of a web page. They provide information to search engines about the topic of the page. Meta keywords were once used to help rank web pages in search engine results. However, due to the abuse by webmasters and marketers, Google claims to have stopped using them more than a decade ago. Despite this, there are still reasons to consider using meta keywords:

  • Uncertain Impact on Google's Algorithm: While Google devalued meta keywords, it is uncertain if they were entirely removed from its ranking algorithm. Google keeps its ranking algorithms top secret to deter people from gaming the system.
  • Other Search Engines and CMS: Other search engines like Yandex, Baidu, and Naver may still use meta keywords. Additionally, some internal CMS search systems, such as SOLR and Algolia, also utilize the meta keywords tag.

Best practices for Meta Keywords

  • Relevance is Key: It is crucial to choose keywords that accurately reflect the content of your page.
  • Keep it Limited: It is generally recommended not to exceed more than 10 meta keywords for a single page. Also, the content length should not exceed 255 characters (including spaces).
  • Consider Long-Tail Keywords: Long-tail keywords are more specific and longer phrases that target a niche audience. These keywords can be highly effective in driving targeted traffic to your website.

Remember, meta keywords are just one aspect of search engine optimization (SEO), and search engines now place less emphasis on them compared to other factors. However, by following these best practices, you can still optimize your meta keywords effectively and improve the visibility of your web pages.

H1 Tag:
Learn Computer Science for Free and Develop Your Skills
Length: 55 character(s); Best length: 10 ~ 255 character(s)

Site Technology

Server:
cloudflare
SSL Secure:
Available
robots.txt:
Unavailable
XML Sitemap:
Unavailable
Gzip Compress:
Available
favicon.ico:
Unavailable

HTTP Header Analysis

HTTP header fields are components of the message header of requests and responses in the Hypertext Transfer Protocol (HTTP). They define the operating parameters of an HTTP transaction. The header fields are not directly displayed by normal web browsers like Internet Explorer, Google Chrome, Firefox etc. Below is the HTTP Header information of www.computer-pdf.com:
HTTP/1.1 200 OK
Date: Wed, 18 Jun 2025 21:34:09 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Server: cloudflare
Cache-Control: no-cache, private
Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=31536000; includeSubDomains
Cf-Cache-Status: DYNAMIC
Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=5%2BGWXbUMUa8s3x0BcFfaGb9vsjxv0pBQKtzKrQqMeYFc4doGtsJoZkB5xoMTtdrwoKbff1I5flt0Kd2VfwEvNsfMT4EuGuoIQKIARfM4P1ckoeGNAgWWARPYPPZMtWfG"}]}
Content-Encoding: gzip
Set-Cookie: XSRF-TOKEN=eyJpdiI6ImxYc29EZXVYWW83ZUU0dVkwVFpuSnc9PSIsInZhbHVlIjoiM3Z2VE1iR0pHSWYyNWtXT1d1amN3S0FCbWZNVXdocGo1MlpWT2cwcGhJZWk1eWdEYjhZTWxrbnpFK2FcL1hOT0IiLCJtYWMiOiIxZGFkNmM2ZDgwZTE0NzQ5NWNkZGFjZjFlMWIyYWViZWJkMWZhOGQ2ZGVjZTY2YTcxZWE2YmRjNjYzOGI3ZTVhIn0%3D; Path=/; Max-Age=7200; Expires=Wed, 18 Jun 2025 23:34:09 GMT
Set-Cookie: computerpdf_session=eyJpdiI6IlQxa1U4em02bm1HeW1yWmplNTY4SHc9PSIsInZhbHVlIjoidzllRFJ2YmpZK1RsWVh3NnN1b3BiTmlLQmJYcFoyTVJ6ZGtuSXFsU0R6N1BwUjQzanY0SFJRclFTVmtqanlXTFg3enlnd0kwSWJYYmZxUHl2RGlZVU1vUmQ5bjBFbHpNUlwvV0M5RGo3ZGYwc1c4THhFdERiYjJQbFlvbXhBTkpxIiwibWFjIjoiODk3ZjUzMDI4NzA0ZWY4MmI0OTNhNjk3YjA0ZGE3ZjEyYWI5OTQxZWYzNmIwODUwYmJkMjMwOTE4ZTljNTg4ZCJ9; HttpOnly; Path=/; Max-Age=7200; Expires=Wed, 18 Jun 2025 23:34:09 GMT
CF-RAY: 951de8bbaee18cc8-EWR
alt-svc: h3=":443"; ma=86400

DNS Record Analysis

Domain Name Systes (DNS) translates easily memorized domain names to the numerical IP addresses needed for the purpose of locating computer services and devices worldwide. There are total 14 DNS record(s) of computer-pdf.com.
Host Type IP/Target TTL Extra Infomation
computer-pdf.comA300
computer-pdf.comA300
computer-pdf.comNS21600
computer-pdf.comNS21600
computer-pdf.comSOA1800expire: 604800
serial: 2372536096
computer-pdf.comMX300pri: 20
computer-pdf.comMX300pri: 50
computer-pdf.comMX300pri: 10
computer-pdf.comTXT
google-site-verification=Wiw5WPls9LI-wFBIw9VIaozyeH5JclK2bH2k-b1e0_g
300
computer-pdf.comTXT
v=spf1 include:zoho.com ip4:3.12.172.161 ~all
300
computer-pdf.comTXT
google-site-verification=UFRnDsWsf0rgVQMICxOzd4hf-giPLYzfkcd9adFwnpo
300
computer-pdf.comTXT
google-site-verification=Q5IjODpkYSBUIVz_-VC4t3r8nddpSGEle9EJtcTniK4
300
computer-pdf.comAAAA
2606:4700:3037::ac43:c176
300
computer-pdf.comAAAA
2606:4700:3035::6815:49f2
300