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Site Info - Duckduckgo.comOverview of web technologies used by Duckduckgo.com. Website Background DuckDuckGo Description on Homepage Top 1k among all websites Popularity rank Jekyll is an open source static website generator written in Ruby by Tom Preston-Werner.
JavaScript is a lightweight, object-oriented, cross-platform scripting language. This includes TypeScript. 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.
JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages. Next.js is an open source JavaScript framework based on React and Node.js. Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev. Node.js is a server-side JavaScript environment for writing network programs such as web servers, originally developed by Ryan Dahl. Microsoft is a multinational technology company headquartered in USA. Microsoft Microsoft is a multinational technology company headquartered in USA. NS1 provides managed and private DNS services, owned by IBM. Microsoft is a multinational technology company headquartered in USA, also offering email services. DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert. 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. Brotli is a lossless compression algorithm developed by Google. A strong ETag is an HTTP header field for validation of cached web pages, that indicates a byte-for-byte identical page in the cache. A weak ETag is an HTTP header field for validation of cached web pages, that indicates a semantically equivalent page in the cache. Weak ETag HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections. HTTP Strict Transport Security The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/. HTTP/2 is the second major version of the HTTP network protocol.
The Open Graph protocol, originally developed by Facebook, is an RDFa-based format that enables any web page to become a rich object in a social graph. Twitter/X Cards enable automatic attachment of photos, videos and media elements to tweets. JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding Linked Data using JSON. JSON-LD Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.
HTML5 is the fifth revision of the HTML standard. Transitional version of XHTML. 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. GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations. JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images. JPEG Commercial entities United States
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