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|  | Site Info - Pypi.orgOverview of web technologies used by Pypi.org. Website Background PyPI ยท The Python Package IndexThe Python Package Index (PyPI) is a repository of software for the Python programming language. Description on Homepage Top 100k among all websites Popularity rank MkDocs is a static site generator that's geared towards building project documentation. MkDocs 1.6.1 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. static files  JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages. Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev. Nginx  Cloudflare Server is a web server developed by Cloudflare. Cloudflare Server  Amazon is a US-based e-commerce and cloud computing provider. Read the Docs provides a platform for creating and hosting technical documentation. Read the Docs  Amazon is a US-based e-commerce and cloud computing provider. Fastly is a content delivery network. Cloudflare provides a content delivery network. Cloudflare  Amazon is a US-based e-commerce and cloud computing provider. Cloudflare provides DNS servers and other web services. Cloudflare  Gmail is the email service provided by Google. GlobalSign is an IT security service provider, also operating as SSL certificate authority. jsDelivr is a service for hosting JavaScript files. 
 Plausible is a lightweight, open source website analytics tool. Plausible  EthicalAds is a privacy-focused ad network targeting developers. 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. Embedded CSS  Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute. Inline CSS  Session cookies are temporary cookies, which are deleted when the user closes the browser. Session Cookies  Persistent cookies with an expiration time of up to 1 day. Cookies expiring in hours  HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security. HttpOnly Cookies  Secure cookies are used only via an encrypted connections, which may increase security. Secure Cookies  Gzip (GNU zip) is a file compression algorithm. 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  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/2 is the second major version of the HTTP network protocol. HTTP/2  HTTP/3 is the third major version of the HTTP network protocol, derived from the QUIC protocol. HTTP/3  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/. 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. Twitter/X Cards  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. Scalable Vector Graphics (SVG) is an XML-based vector image format. 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. PNG  JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images. 
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