W3Techs
provided by
Q-Success
Home Technologies Reports Sites Quality Users Blog Forum FAQ Search

Featured products and servicesadvertise here




advertise here
lookup another site:
Get our site info tools.

Site Info - Preventblindness.org

Overview of web technologies used by Preventblindness.org.

Website Background

Prevent Blindness: A Lifetime of Healthy Vision
Prevent Blindness brings Americans to eye care. Your donation today will fund outreach to people at the highest risk of vision loss. It will support quality

Description on Homepage

Prevent Blindness America

Description from Alexa

5 May 1997

Online since

Number 470,146 of all websites according to Alexa

Popularity rank

Drupal is an open source content management system written in PHP, originally developed by Dries Buytaert.

Drupal 7.56
(7% of sites use a newer version)

PHP is a popular scripting language for creating web pages.

PHP

JavaScript is a lightweight, object-oriented, cross-platform scripting language, mainly 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 1.10
(61% of sites use a newer version)

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

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

External 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

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.

Gzip Compression

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

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

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

Non-Secure Cookies
(used until recently)

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 until recently)

HTTP/2 is the second major version of the HTTP network protocol.

HTTP/2
(used until recently)

SPDY (pronounced speedy) is a web protocol developed by Google, the basis for HTTP/2.

SPDY
(used until recently)

Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.

Generic RDFa

IdenTrust is a SSL certificate authority.

IdenTrust

The SSL certificate is invalid because it is not issued for the domain where it is used.

Invalid Domain
(used until recently)

Comodo provides IT services, software, and SSL certificates under various brand names.

Comodo
(used until recently)

The CDNJS is a content distribution network, hosting a large number of JavaScript libraries, provided by CloudFlare.

CDNJS

The jQuery CDN hosts copies of the jQuery library, provided by MaxCDN.

jQuery CDN

Google Analytics is a free service to get detailed statistics about the visitors of a website, provided by Google.

Google Analytics

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

Nginx

Rackspace is a managed cloud computing company based in USA.

Rackspace
(used until recently)
hosting info based on data from ipinfo.io

CloudFlare provides a content delivery network.

CloudFlare

Fastly is a content delivery network.

Fastly

Non-profit organizations

.org

United States

English

Technology Score

The technology score rates a site based on its technologies in a range from 0 to 100. It consists in a popularity score (how many sites use the same technologies), a traffic score (how much traffic have other sites using the same technologies) and a version score (how many sites use more recent technology versions). Quality alerts also affect the rating.

TotalPopularity TrafficVersion
Technology Score64745266
Content Management Systems56225493
Server-side Programming Languages679143
Client-side Programming Languages7510051
JavaScript Libraries61984739
Markup Languages688253
SSL Certificate Authorities475738
JavaScript Content Delivery Networks514854
Traffic Analysis Tools709148
Web Servers586055
Reverse Proxy Services838681

Share this page

Our Book Recommendation
About Us Disclaimer Terms of Use Privacy Policy Advertising Feedback
W3Techs on   Twitter Twitter LinkedIn LinkedIn Google+ Google+ Facebook Facebook
Copyright © 2009-2017 Q-Success