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Site Info - Expo.dev

Overview of web technologies used by Expo.dev.

Website Background

Expo
Expo is an open-source platform for making universal native apps for Android, iOS, and the web with JavaScript and React.

Description on Homepage

Top 100k among all websites

Popularity rank

Atlassian Statuspage is a hosted service for showing the status of services.

Atlassian Statuspage
used on a subdomain

Medium is a hosted publishing platform.

Medium
used on a subdomain

Discourse is an open source discussion platform written in Ruby on Rails.

Discourse 3.5.0
used until recently

JavaScript is a lightweight, object-oriented, cross-platform scripting language.

JavaScript

Ruby is a general-purpose object-oriented language originally developed by Yukihiro "Matz" Matsumoto in Japan.

Ruby
used until recently

JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages.

JavaScript

Next.js is an open source JavaScript framework based on React and Node.js.

Next.js

jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating and Ajax interaction. Originally developed by John Resig.

jQuery
used on a subdomain

Cloudflare Server is a web server developed by Cloudflare.

Cloudflare Server

Node.js is a server-side JavaScript environment for writing network programs such as web servers, originally developed by Ryan Dahl.

Node.js

Envoy Proxy is a proxy server designed for large service-oriented architectures.

Envoy
used on a subdomain

Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.

Nginx
used until recently

Google provides various services to run on its servers.

Google

Atlassian offers a range of IT products and services.

Atlassian
used on a subdomain

Medium is a hosted publishing platform.

Medium
used on a subdomain

Discourse offers managed hosting of its open source discussion platform.

Discourse
used until recently
hosting info partly based on data from ipinfo.io

Google provides various services to run on its servers.

Google

Amazon is a US-based e-commerce and cloud computing provider.

Amazon
used on a subdomain

Cloudflare provides a content delivery network.

Cloudflare

Amazon CloudFront is a content delivery web service by Amazon.

Amazon CloudFront
used on a subdomain

Cloudflare provides DNS servers and other web services.

Cloudflare

Amazon is a US-based e-commerce and cloud computing provider.

Amazon
used until recently

Gmail is the email service provided by Google.

Gmail

Discourse offers managed hosting of its open source discussion platform.

Discourse
used until recently

GlobalSign is an IT security service provider, also operating as SSL certificate authority.

GlobalSign

Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.

Let’s Encrypt
used on a subdomain

Starfield Technologies is an SSL certificate authority owned by Go Daddy.

Starfield
used until recently

Google Analytics is a free service to get detailed statistics about the visitors of a website, provided by Google. This includes the Ads conversion tracking and the Floodlight services.

Google Analytics
used on inner pages

Cloudflare Web Analytics is a privacy-respecting website traffic analytics service.

Cloudflare Web Analytics
used on a subdomain

HubSpot Marketing Analytics is a web analytics tool by HubSpot.

HubSpot
used until recently

The Google Advertising network consists of AdSense, DoubleClick and other services.

Google Ads
used on inner pages

The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.

Google Tag Manager
used on inner pages

A Twitter/X Button allows a Twitter user to post a tweet from the visited site.

Twitter/X
used on a subdomain

External Cascading Style Sheets define style rules in a separate CSS file.

External CSS

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

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression

Brotli is a lossless compression algorithm developed by Google.

Brotli Compression
used on inner pages

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.

Strong ETag

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
used on a subdomain

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.

IPv6

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/.

Default protocol https

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.

Open Graph

Twitter/X Cards enable automatic attachment of photos, videos and media elements to tweets.

Twitter/X Cards

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.

Generic RDFa
used on inner pages

HTML5 is the fifth revision of the HTML standard.

HTML5

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

UTF-8

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

Scalable Vector Graphics (SVG) is an XML-based vector image format.

SVG

WebP is an image format that provides lossless and lossy compression, developed by Google.

WebP

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

JPEG
used on a subdomain

Dev, projects in development

.dev

United States
Germany
used on a subdomain
Austria
used on a subdomain
Sweden
used until recently

English

 

 

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