JSDelivr

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   JSDelivr (stylized as jsDelivr) is a free public CDN for open-source projects.

Stackpath BootstrapCDN

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   BootstrapCDN is a public content delivery network. Users of BootstrapCDN can load CSS, JavaScript and images remotely, from its servers,encompasses MaxCDN and NetDNA

Meta Description

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   A meta description is a 160-character snippet, a meta tag in HTML, that summarizes a page`s content. this website is having meta description of the following : The Naval Historical Foundation preserves and honors the legacy of those who came before us. We educate and inspire the generations who will follow.

Cache-Control Header Max-Age

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   Specifies the maximum amount of time a resource will be considered fresh. Contrary to Expires, this directive is relative to the time of the request. this website is having max-age=600 secs.

HTTP Upgrade Header - HTTP/2

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   The HTTP Upgrade mechanism is used to establish HTTP/2 starting from plain HTTP. The client starts an HTTP/1.1 connection and sends an Upgrade: h2c header. If the server supports HTTP/2, it replies with HTTP 101 Switching Protocol status code. The HTTP Upgrade mechanism is used only for cleartext HTTP2 (h2c). In the case of HTTP2 over TLS (h2), the ALPN TLS protocol extension is used instead.

Meta keywords

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   Meta keywords are types of meta tags in the HTML source code of a webpage. They describe the content of a website shortly and concisely,this website is using the following keywords: navy,naval,US,history,historical,historic,museum,exhibit,foundation,artifacts,photos,photographs,battleship,aviation,submarine,aircraft,carrier,aviator, united,states,USA

Vary Header check for User-Agent

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   When using the Vary: User-Agent header, caching servers should consider the user agent when deciding whether to serve the page from cache

Vary Header Accept-Encoding

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   The Accept-Encoding request HTTP header advertises which content encoding, usually a compression algorithm, the client is able to understand. Using content negotiation, the server selects one of the proposals, uses it and informs the client of its choice with the Content-Encoding response header.

Vary Header check for cookies

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   The Vary HTTP response header determines how to match future request headers to decide whether a cached response can be used rather than requesting a fresh one from the origin server. It is used by the server to indicate which headers it used when selecting a representation of a resource in a content negotiation algorithm.

SPF

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   The Sender Policy Framework (SPF) is an email-authentication technique which is used to prevent spammers from sending messages on behalf of your domain. With SPF an organisation can publish authorized mail servers.

Microsoft Office 365

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   Microsoft Office 365 is a Software as a Service (SaaS) solution that includes Microsoft Office and other services, such as email and collaboration, from Microsoft’s cloud server. Microsoft Office 365 provides desktop functionalities and is available by subscription.

Apache

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   The Apache HTTP Server, colloquially called Apache, is free and open-source cross-platform web server software, released under the terms of Apache License 2.0. Apache is developed and maintained by an open community of developers under the auspices of the Apache Software Foundation.

Character Encoding :UTF-8

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   This website is using UTF-8 character encoding in HTML , character encoding is used to represent a repertoire of characters by some kind of encoding system.

PHP 7.4.16

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   PHP: Hypertext Preprocessor is a general-purpose programming language originally designed for web development.

PHP 7.1.27

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   PHP: Hypertext Preprocessor is a general-purpose programming language originally designed for web development.

WordPress DNS Prefetching

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   DNS prefetching is an attempt to resolve domain names before a user tries to follow a link. This is done using the computer`s normal DNS resolution mechanism

Google Fonts API

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   Making the web more beautiful, fast, and open through great typography.this website is using Lato%3A300%2C400%2C600%2C700&subset=latin%2Clatin-ext font family

English United State - Language

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   this website is using English as a language parameter

English - Language

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   this website is using English as a language parameter

Viewport - Width

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   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

Viewport - initial-scale

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   The viewport is the user`s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.