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.

SendGrid

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   SendGrid is a Denver, Colorado-based customer communication platform for transactional and marketing email.

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.

NO Store HTTP Cache-Control

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

No Cache Content

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

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.

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 : Why buy with us? Simple. We offer the largest selection of products with up to 60% OFF. Plus, you get FREE lenses, FREE delivery, 2-year warranty & 100-day no-hassle returns. Found a better price elsewhere? We’ll match it!

schema.org micro-markup

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   Schema.org is a collaborative, community activity with a mission to create, maintain, and promote schemas for structured data on the Internet, on web pages, in email messages, and beyond.

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.

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.

OpenSSL 1.0.2k-fips

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   OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end.

Apache 2.4.39 |Operating System:Amazon

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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.

manifest.json

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   The manifest.json file is the only file that every extension using WebExtension APIs must contain.

Youtube

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   YouTube is an American online video sharing and social media platform launched by Steve Chen, Chad Hurley, and Jawed Karim in February 2005. After Google, YouTube is the most visited website worldwide, with over one billion monthly users.

PHP 7.1.15

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