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Document Standards

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.

source: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Vary

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Vary Header check for cookies

Download List of All Websites using Vary Header check for cookies

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.

source: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Vary

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Document Standards

Cloudflare Certificate Transparency (removed)

2021-08-02 / 2021-08-02

Meta Description (removed)

2019-05-25 / 2019-05-25

Meta keywords (removed)

2019-05-25 / 2019-05-25

Vary Header Accept-Encoding

2025-09-22 / 2025-09-22

Vary Header check for cookies

2025-09-22 / 2025-09-22

Must Revalidate HTTP Cache-Control (removed)

2019-05-25 / 2019-05-25

NO Store HTTP Cache-Control (removed)

2019-05-25 / 2019-05-25

No Cache Content (removed)

2019-05-25 / 2019-05-25

SEO Robots : Allow to index and follow website links (removed)

2021-08-02 / 2021-08-02

X-Frame-Options Header (removed)

2023-05-10 / 2023-05-10

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

2019-05-25 / 2019-05-25

Meta Description (removed)

2021-08-02 / 2021-08-02

schema.org micro-markup (removed)

2021-08-02 / 2021-08-02

Private Cache-Control Header (removed)

2023-05-10 / 2023-05-10

No Cache Content (removed)

2023-05-10 / 2023-05-10

NO Store HTTP Cache-Control (removed)

2023-05-10 / 2023-05-10

Must Revalidate HTTP Cache-Control (removed)

2023-05-10 / 2023-05-10

Cache-Control Header Max-Age (removed)

2023-05-10 / 2023-05-10

Precheck Cache-Control Header (removed)

2023-05-10 / 2023-05-10

Post Cache-Control Header (removed)

2023-05-10 / 2023-05-10

Vary Header Accept-Encoding (removed)

2021-08-02 / 2021-08-02

Analytics and Tracking

Facebook Pixel (removed)

2019-05-25 / 2019-05-25

Google Analytics (removed)

2019-05-25 / 2019-05-25

Widgets

Google Fonts API (removed)

2019-05-25 / 2019-05-25

Google Tag Manager (removed)

2019-05-25 / 2019-05-25

Twitter Cards (removed)

2019-05-25 / 2019-05-25

Google Fonts API (removed)

2019-05-25 / 2019-05-25

WordPress DNS Prefetching (removed)

2019-05-25 / 2019-05-25

Font Awesome 4.3.0 (removed)

2019-05-25 / 2019-05-25

Email Hosting Providers

SPF (removed)

2019-05-25 / 2023-05-10

Microsoft Office 365 (removed)

2023-05-10 / 2023-05-10

SendGrid (removed)

2023-05-10 / 2023-05-10

Language

English - Language (removed)

2019-05-25 / 2019-05-25

English United State - Language (removed)

2023-05-10 / 2023-05-10

English - Language (removed)

2023-05-10 / 2023-05-10

Content Management System

WordPress 4.9.8 (removed)

2019-05-25 / 2019-05-25

WordPress 5.8 (removed)

2021-08-02 / 2021-08-02

Framworks

PHP (removed)

2019-05-25 / 2019-05-25

Operating Systems and Servers

Nginx (removed)

2019-05-25 / 2019-05-25

Cloudflare (removed)

2021-08-02 / 2023-05-10

Document Encoding

Character Encoding :UTF-8 (removed)

2019-05-25 / 2023-05-10

Gzip Content-Encoding (removed)

2021-08-02 / 2021-08-02

Chunked transfer encoding (removed)

2019-05-25 / 2023-05-10

Mobile

Theam Color Supported for Chrome on Android (removed)

2019-05-25 / 2021-08-02

Viewport - initial-scale (removed)

2021-08-02 / 2021-08-02

Viewport - Width (removed)

2021-08-02 / 2021-08-02

Viewport - Mobile compatible (removed)

2021-08-02 / 2021-08-02

Viewport - initial-scale (removed)

2019-05-25 / 2019-05-25

Viewport - Width (removed)

2019-05-25 / 2019-05-25

Viewport - Mobile compatible (removed)

2019-05-25 / 2019-05-25

Viewport - initial-scale (removed)

2023-05-10 / 2023-05-10

Viewport - Width (removed)

2023-05-10 / 2023-05-10

Viewport - Mobile compatible (removed)

2023-05-10 / 2023-05-10

Audio / Video Media

Youtube (removed)

2021-08-02 / 2021-08-02

Content Delivery Network

Stackpath BootstrapCDN (removed)

2019-05-25 / 2019-05-25

Profile Details

Last technolgie detected on 2025-09-22 We know of 2 technologies on aristotle.com and 55 technologies detected on aristotle.com since 2019-05-25.

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