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Document Standards

Age HTTP Header - Original Server Response

Age HTTP Header - Original Server Response

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   The Age header contains the time in seconds the object has been in a proxy cache.


X-Frame-Options Header

X-Frame-Options Header

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   The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a <frame>, <iframe>, <embed> or <object>. Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.


Pragma Header - backwards compatibility with HTTP/1.0

Pragma Header - backwards compatibility with HTTP/1.0

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   The Pragma HTTP/1.0 general header is an implementation-specific header that may have various effects along the request-response chain. It is used for backwards compatibility with HTTP/1.0 caches where the Cache-Control HTTP/1.1 header is not yet present.


Public Cache-Control

Public Cache-Control

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   Indicates that the response may be cached by any cache, even if the response would normally be non-cacheable (e.g. if the response does not contain a max-age directive or the Expires header).

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Cache-Control Header Max-Age

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=3600 secs.


Block Content Sniffing

Block Content Sniffing

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   The X-Content-Type-Options response HTTP header is a marker used by the server to indicate that the MIME types advertised in the Content-Type headers should not be changed and be followed. This allows to opt-out of MIME type sniffing, or, in other words, it is a way to say that the webmasters knew what they were doing.


Vary Header check for cookies

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.


Vary Header Accept-Encoding

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.

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Private Cache-Control Header

Private Cache-Control Header

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   The Cache-Control general-header field is used to specify directives for caching mechanisms in both requests and responses. Caching directives are unidirectional, meaning that a given directive in a request is not implying that the same directive is to be given in the response.


No Cache Content

No Cache Content

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   Forces caches to submit the request to the origin server for validation before releasing a cached copy.


NO Store HTTP Cache-Control

NO Store HTTP Cache-Control

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   The cache should not store anything about the client request or server response.

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Proxy Revalidate HTTP Cache-Control

Proxy Revalidate HTTP Cache-Control

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   Same as must-revalidate, but it only applies to shared caches (e.g., proxies) and is ignored by a private cache.

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NO Transform HTTP Cache-Control

NO Transform HTTP Cache-Control

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   No transformations or conversions should be made to the resource. The Content-Encoding, Content-Range, Content-Type headers must not be modified by a proxy.

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Document Encoding

Character Encoding :utf-8

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.


Gzip Content-Encoding

Gzip Content-Encoding

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   The Content-Encoding entity header is used to compress the media-type. When present, its value indicates which encodings were applied to the entity-body. It lets the client know how to decode in order to obtain the media-type referenced by the Content-Type header.


Chunked transfer encoding

Chunked transfer encoding

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   Chunked transfer encoding is a streaming data transfer mechanism available in version 1.1 of the Hypertext Transfer Protocol (HTTP). In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks"




Framworks

PHP 7.2.17

PHP 7.2.17

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

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Varnish

Varnish

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   Varnish is an HTTP accelerator designed for content-heavy dynamic web sites as well as APIs. In contrast to other web accelerators, such as Squid, which began life as a client-side cache, or Apache and nginx, which are primarily origin servers, Varnish was designed as an HTTP accelerator.




Email Hosting Providers

G Suite

G Suite

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   formerly Google Apps for Work and Google Apps for Your Domain is a brand of cloud computing, productivity and collaboration tools, software and products developed by Google.

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SPF

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.

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Language

English - Language

English - Language

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   this website is using English as a language parameter




Analytics and Tracking

Google Analytics

Google Analytics

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   Google Analytics is a web analytics service offered by Google that tracks and reports website traffic, currently as a platform inside the Google Marketing Platform brand.

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Operating Systems and Servers

Apache

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.




Web Servers

Server partial requests support

Server partial requests support

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   The Accept-Ranges response HTTP header is a marker used by the server to advertise its support of partial requests. The value of this field indicates the unit that can be used to define a range.




Mobile

Viewport  - Width

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.

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Viewport  - Mobile compatible

Viewport - Mobile compatible

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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.

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Viewport  - initial-scale

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.

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Document Standards

Age HTTP Header - Original Server Response

Age HTTP Header - Original Server Response (removed)

2019-05-25 / 2019-05-25

|

X-Frame-Options Header

X-Frame-Options Header

2019-05-25 / 2023-05-13

|

Pragma Header - backwards compatibility with HTTP/1.0

Pragma Header - backwards compatibility with HTTP/1.0 (removed)

2019-05-25 / 2019-05-25

|

Public Cache-Control

Public Cache-Control

2021-08-06 / 2023-05-13

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Cache-Control Header Max-Age

Cache-Control Header Max-Age

2021-08-06 / 2023-05-13

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Block Content Sniffing

Block Content Sniffing

2019-05-25 / 2023-05-13

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Vary Header check for cookies

Vary Header check for cookies

2019-05-25 / 2023-05-13

|

Vary Header Accept-Encoding

Vary Header Accept-Encoding

2019-05-25 / 2023-05-13

|

Private Cache-Control Header

Private Cache-Control Header (removed)

2019-05-25 / 2019-05-25

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No Cache Content

No Cache Content (removed)

2019-05-25 / 2019-05-25

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NO Store HTTP Cache-Control

NO Store HTTP Cache-Control (removed)

2019-05-25 / 2019-05-25

|

Proxy Revalidate HTTP Cache-Control

Proxy Revalidate HTTP Cache-Control (removed)

2019-05-25 / 2019-05-25

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NO Transform HTTP Cache-Control

NO Transform HTTP Cache-Control (removed)

2019-05-25 / 2019-05-25

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Document Encoding

Character Encoding :utf-8

Character Encoding :utf-8

2019-05-25 / 2023-05-13

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Gzip Content-Encoding

Gzip Content-Encoding

2021-08-06 / 2023-05-13

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Chunked transfer encoding

Chunked transfer encoding

2019-05-25 / 2023-05-13

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Framworks

PHP 7.2.17

PHP 7.2.17 (removed)

2019-05-25 / 2019-05-25

|

Varnish

Varnish

2019-05-25 / 2023-05-13

|



Email Hosting Providers

G Suite

G Suite

2019-05-25 / 2023-05-13

|

SPF

SPF

2019-05-25 / 2023-05-13

|



Language

English - Language

English - Language

2019-05-25 / 2023-05-13

|



Analytics and Tracking

Google Analytics

Google Analytics (removed)

2019-05-25 / 2021-08-06

|



Operating Systems and Servers

Apache

Apache

2019-05-25 / 2023-05-13

|



Web Servers

Server partial requests support

Server partial requests support

2019-05-25 / 2023-05-13

|



Mobile

Viewport  - Width

Viewport - Width

2019-05-25 / 2023-05-13

|

Viewport  - Mobile compatible

Viewport - Mobile compatible

2019-05-25 / 2023-05-13

|

Viewport  - initial-scale

Viewport - initial-scale

2019-05-25 / 2023-05-13

|



Profile Details

Last technolgie detected on 2023-05-13 We know of 27 technologies on sierraclubfoundation.org and 27 technologies detected on sierraclubfoundation.org since 2019-05-25.




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