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Site Info - Letsencrypt.org
Overview of web technologies used by Letsencrypt.org.
Let's Encrypt - Free SSL/TLS CertificatesLet’s Encrypt is a free, automated, and open certificate authority brought to you by the non-profit Internet Security Research Group (ISRG).
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Hugo is an open source static website generator written in Go.
Static websites don't use any server-side programming language for generating web pages, but deliver fixed content which is created manually or with an offline tool.
HTML5 is the fifth revision of the HTML standard.
UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.
PNG (Portable Network Graphics) is a lossless compression image format, suitable to store graphics with uniformly colored areas, and originally introduced as a free, open-source successor of GIF.
Scalable Vector Graphics (SVG) is an XML-based vector image format.
External Cascading Style Sheets define style rules in a separate CSS file.
Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.
Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.
Gzip (GNU zip) is a file compression algorithm.
A weak ETag is an HTTP header field for validation of cached web pages, that indicates a semantically equivalent page in the cache.
The Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.
HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.
The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.
Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.
Microdata is a specification to integrate metadata within existing content on web pages.
IdenTrust is a SSL certificate authority.
Google Analytics is a free service to get detailed statistics about the visitors of a website, provided by Google.
The Google Advertising network consists of AdSense, DoubleClick and other services.
The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.
Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.
Amazon is a US-based e-commerce and cloud computing provider.
Akamai is a content delivery network.
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