PROJECTEULER.NET 网站分析

基本信息

搜索引擎收录信息

必应:
谷歌:

页面信息

标题:
About - Project Euler
长度: 21 字符; 最佳长度: 10 ~ 60 字符
Meta 描述信息:
A website dedicated to the fascinating world of mathematics and programming
长度: 75 字符; 最佳长度: 50 ~ 160 字符
Meta 关键词:
programming,mathematics,problems,puzzles
长度: 40 字符; 最佳长度: 10 ~ 255 字符
H1标签:
长度: 0 字符; 最佳长度: 10 ~ 255 字符

Your page does not include an H1 tag.

The H1 tag in HTML is the main headline users see first when a page loads. It conveys the page's topic, enticing visitors to read further. H1 tags are crucial for SEO, user experience, and accessibility. They distinguish the main title on a webpage, aiding search engines and users in understanding the content.

Here are best practices for H1 tags

  • Use H1 tags for page titles.
  • Limit to one H1 tag per page.
  • Keep H1 tags short and concise.
  • Structure headings hierarchically.
  • Include your main keyword.
  • Ensure H1 tags are engaging.

建站技术

服务器:
Apache
SSL 安全:
有效
robots.txt:
不可用
XML 站点地图:
不可用
Gzip 压缩:
有效
favicon.ico:
不可用

HTTP Head 分析

HTTP 协议采用了请求与响应模型,通过 HTTP Header 定义了 HTTP 传输过程中的必要参数。 浏览器(例如 Internet Explorer, Google Chrome, Firefox 等)并不会显示 HTTP header 字段的内容,下面是网站 projecteuler.net 的 HTTP header 信息:
HTTP/1.1 200 OK
date: Tue, 20 May 2025 10:56:36 GMT
content-type: text/html; charset=UTF-8
content-length: 2214
server: Apache
x-powered-by: PHP/8.3.13
expires: Thu, 19 Nov 1981 08:52:00 GMT
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
set-cookie: PHPSESSID=68500f6753300bbe518c9dd87f33a19a; path=/; secure; HttpOnly; SameSite=Lax
strict-transport-security: max-age=63072000; includeSubDomains
vary: Accept-Encoding
content-encoding: gzip
x-static-config: yes
x-guest-hostname: vps-cc63e9
x-xss-protection: 1; mode=block
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
referrer-policy: same-origin
content-security-policy: script-src 'self' https://cdn.jsdelivr.net/gh/highlightjs/ https://cdn.jsdelivr.net/npm/mathjax@3/ https://cdnjs.cloudflare.com/polyfill/v3/;style-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net/gh/highlightjs/ https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css;
permissions-policy: geolocation=(), microphone=(), camera=()
x-cdn-cache-status: MISS
x-via: LHR6

DNS 记录分析

DNS 域名系统(Domain Name System,缩写)是 Internet 的一项基础服务。它作为将域名和IP地址相互映射的一个分布式数据库,能够使人更方便地访问互联网。projecteuler.net 当前共有 9 项 DNS 记录。
主机 类型 IP/目标 生存时间 扩充信息
projecteuler.netA3600
projecteuler.netNS3600
projecteuler.netNS3600
projecteuler.netNS3600
projecteuler.netNS3600
projecteuler.netSOA3600expire: 1209600
serial: 1719337621
projecteuler.netMX3600pri: 10
projecteuler.netTXT
v=spf1 include:spf.stackmail.com a mx -all
3600
projecteuler.netAAAA
2a07:7800::128
1599