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Site Info - Booking.com

Overview of web technologies used by Booking.com.

Website Background

Booking.com | Official site | The best hotels, flights, car rentals & accommodations
Explore the world with Booking.com. Big savings on homes, hotels, flights, car rentals, taxis and attractions – build your perfect trip on any budget.

Description on Homepage

Top 1k among all websites

Popularity rank

Java is a general-purpose language originally developed by Sun Microsystems.

Java

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

JavaScript

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

jQuery

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

Nginx

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

Amazon
hosting info partly based on data from ipinfo.io, see details

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

Amazon

Amazon CloudFront is a content delivery web service by Amazon.

Amazon CloudFront

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

Amazon

Proofpoint provides email protection and other IT security services.

Proofpoint

DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.

DigiCert

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

Microsoft UET (Universal Event Tracking) records what visitors do on a website after they click on an ad.

Microsoft UET

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

Google Ads

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

Google Tag Manager

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

Twitter
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

Persistent cookies with an expiration time between 1 month and 1 year.

Cookies expiring in months
used on a subdomain

Persistent cookies with an expiration time between 1 and 10 years.

Cookies expiring in years
used on a subdomain

HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.

HttpOnly Cookies
used on a subdomain

Secure cookies are used only via an encrypted connections, which may increase security.

Secure Cookies
used on a subdomain

Brotli is a lossless compression algorithm developed by Google.

Brotli Compression

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression
used on a subdomain

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 its www subdomain, e.g. from example.com to www.example.com.

Default subdomain www

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

Default protocol https

Session cookies are temporary cookies, which are deleted when the user closes the browser.

Session Cookies
used until recently

Persistent cookies with an expiration time of more than 10 years.

Cookies expiring in decades
used until recently

Non-secure cookies may be used via an unencrypted connections, which may be a security threat.

Non-Secure Cookies
used until recently

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 Cards enable automatic attachment of photos, videos and media elements to Tweets.

Twitter 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

Microdata is a specification to integrate metadata within existing content on web pages.

Microdata
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

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

JPEG

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

Commercial entities

.com

United States
Germany
Sweden
Netherlands
used until recently
United Kingdom
used until recently
Ireland
used until recently
Finland
used until recently
Switzerland
used until recently

English
Spanish
German
Japanese
French
Russian
Portuguese
Italian
Dutch, Flemish
Turkish
Polish
Chinese
Indonesian
Vietnamese
Czech
Korean
Ukrainian
Hungarian
Arabic
Romanian
Greek
Swedish
Hebrew
Danish
Finnish
Thai
Slovak
Bulgarian
Serbian
Croatian
Lithuanian
Slovenian
Catalan, Valencian
Estonian
Latvian
Norwegian
Icelandic
Malay
Filipino, Pilipino

 

 

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