citylab.com

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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.


HSTS - Browser HTTPS Only

HSTS - Browser HTTPS Only

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   The HTTP Strict-Transport-Security response header (often abbreviated as HSTS) lets a web site tell browsers that it should only be accessed using HTTPS, instead of using HTTP for 31557600 seconds


X-Cache HTTP Header

X-Cache HTTP Header

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   The resource was not in the website cache, and was pulled from the origin server like Varnish servers.


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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Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control

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   Indicates that once a resource has become stale (e.g. max-age has expired), a cache must not use the response to satisfy subsequent requests for this resource without successful validation on the origin server.

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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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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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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=0 secs.




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.




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  - 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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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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Language

English - Language

English - Language

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   this website is using English as a language parameter




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.




Document Standards

Age HTTP Header - Original Server Response

Age HTTP Header - Original Server Response

2023-05-07 / 2023-05-07

|

HSTS - Browser HTTPS Only

HSTS - Browser HTTPS Only

2021-07-31 / 2023-05-07

|

Cache-Control Header Precedence Max-Age

Cache-Control Header Precedence Max-Age (removed)

2019-05-25 / 2019-05-25

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X-Cache HTTP Header

X-Cache HTTP Header

2023-05-07 / 2023-05-07

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X-Cache HTTP Header

X-Cache HTTP Header (removed)

2021-07-31 / 2021-07-31

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Vary Header Accept-Encoding

Vary Header Accept-Encoding

2023-05-07 / 2023-05-07

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Vary Header Accept-Encoding

Vary Header Accept-Encoding (removed)

2021-07-31 / 2021-07-31

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Private Cache-Control Header

Private Cache-Control Header

2021-07-31 / 2023-05-07

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No Cache Content

No Cache Content

2021-07-31 / 2023-05-07

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NO Store HTTP Cache-Control

NO Store HTTP Cache-Control

2021-07-31 / 2023-05-07

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Must Revalidate HTTP Cache-Control

Must Revalidate HTTP Cache-Control

2021-07-31 / 2023-05-07

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Public Cache-Control

Public Cache-Control

2021-07-31 / 2023-05-07

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Proxy Revalidate HTTP Cache-Control

Proxy Revalidate HTTP Cache-Control

2021-07-31 / 2023-05-07

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Cache-Control Header Max-Age

Cache-Control Header Max-Age

2021-07-31 / 2023-05-07

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Internet Explorer Compatibility

Internet Explorer Compatibility (removed)

2019-05-25 / 2019-05-25

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Vary Header Accept-Encoding

Vary Header Accept-Encoding (removed)

2019-05-25 / 2019-05-25

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Document Encoding

Character Encoding :utf-8

Character Encoding :utf-8

2019-05-25 / 2023-05-07

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Gzip Content-Encoding

Gzip Content-Encoding

2021-07-31 / 2023-05-07

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Chunked transfer encoding

Chunked transfer encoding (removed)

2021-07-31 / 2021-07-31

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Email Hosting Providers

G Suite

G Suite (removed)

2019-05-25 / 2019-05-25

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SPF

SPF (removed)

2019-05-25 / 2019-05-25

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Mailchimp

Mailchimp (removed)

2019-05-25 / 2019-05-25

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Zendesk

Zendesk (removed)

2019-05-25 / 2019-05-25

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Microsoft Office 365

Microsoft Office 365 (removed)

2019-05-25 / 2019-05-25

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Mobile

Viewport  - Width

Viewport - Width

2021-07-31 / 2023-05-07

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Viewport  - initial-scale

Viewport - initial-scale

2021-07-31 / 2023-05-07

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Viewport  - Mobile compatible

Viewport - Mobile compatible

2021-07-31 / 2023-05-07

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Language

English - Language

English - Language

2019-05-25 / 2023-05-07

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Widgets

Google Tag Manager

Google Tag Manager (removed)

2021-07-31 / 2021-07-31

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Operating Systems and Servers

Nginx

Nginx (removed)

2019-05-25 / 2019-05-25

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Framworks

Varnish

Varnish (removed)

2019-05-25 / 2019-05-25

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Web Servers

Server partial requests support

Server partial requests support

2019-05-25 / 2023-05-07

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Profile Details

Last technolgie detected on 2023-05-07 We know of 18 technologies on citylab.com and 32 technologies detected on citylab.com since 2019-05-25.




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