Hotjar Usage Statistics · Download List of All Websites using Hotjar
A heatmap, survey, feedback and funnel application.
Audience Measurement · Conversion Optimization · Feedback Forms and Surveys
Google Analytics Usage Statistics · Download List of All Websites using Google Analytics
Google Analytics offers a host of compelling features and benefits for everyone from senior executives and advertising and marketing professionals to site owners and content developers.
Application Performance · Audience Measurement · Visitor Count Tracking
Google Universal Analytics Usage Statistics · Download List of All Websites using Google Universal Analytics
The analytics.js JavaScript snippet is a new way to measure how users interact with your website. It is similar to the previous Google tracking code, ga.js, but offers more flexibility for developers to customize their implementations.
Google Analytics 4 Usage Statistics · Download List of All Websites using Google Analytics 4
Google Analytics 4 formerly known as App + Web is a new version of Google Analytics that was released in October 2020.
Google Analytics IP Anonymization Usage Statistics · Download List of All Websites using Google Analytics IP Anonymization
The website doesn't report your IP address to Google Analytics.
Global Site Tag Usage Statistics · Download List of All Websites using Global Site Tag
Google's primary tag for Google Measurement/Conversion Tracking, Adwords and DoubleClick.
Google Conversion Linker Usage Statistics · Download List of All Websites using Google Conversion Linker
Detects the ad click information in your conversion page URLs and stores this information to associate an ad click with a conversion.
Bing Universal Event Tracking Usage Statistics · Download List of All Websites using Bing Universal Event Tracking
Universal Event Tracking (UET) is a simple and powerful campaign measurement solution that allows you to track key conversion goals important to your business.
Conversion Optimization · Retargeting / Remarketing
Fontello Usage Statistics · Download List of All Websites using Fontello
Fontello is a tool that helps to build custom icon fonts for websites with ease. It offers a wide range of images to choose from and enables users to create a webfont pack in just one click.
Fonts
Google Font API Usage Statistics · Download List of All Websites using Google Font API
The Google Font API helps you add web fonts to any web page.
Google Tag Manager Usage Statistics · Download List of All Websites using Google Tag Manager
Tag management that lets you add and update website tags without changes to underlying website code.
Tag Management
Facebook Sharer Usage Statistics · Download List of All Websites using Facebook Sharer
Share this page on Facebook using a deprecated sharing syntax.
COVID-19 Usage Statistics · Download List of All Websites using COVID-19
This website mentions COVID-19 / Novel Coronavirus.
US Privacy User Signal Mechanism Usage Statistics · Download List of All Websites using US Privacy User Signal Mechanism
The US Privacy API (USP API) is a lightweight API used to communicate signals represented in the US Privacy String.
Privacy Compliance
Pexels Usage Statistics · Download List of All Websites using Pexels
Free stock photos, royalty free images & videos.
Image Provider
CrUX Dataset Usage Statistics · Download List of All Websites using CrUX Dataset
CrUX is a data collection system that gathers information about how real users interact with websites. This website is included in the user experiences data gathered from Google Chrome and thus considered sufficiently popular on the Internet.
CrUX Top 100k Usage Statistics · Download List of All Websites using CrUX Top 100k
Relative measure of site popularity within the CrUX dataset, measured by the total number of navigations on the origin. This site is in the top 100k.
Azure Active Directory Usage Statistics · Download List of All Websites using Azure Active Directory
Enterprise identity service that provides single sign-on, multifactor authentication and more.
Login
Pixabay Usage Statistics · Download List of All Websites using Pixabay
Free image provider.
Cloudflare Radar Usage Statistics · Download List of All Websites using Cloudflare Radar
The website appears on the Cloudflare Radar Top 1m sites list
Cloudflare Radar Top 200k Usage Statistics · Download List of All Websites using Cloudflare Radar Top 200k
The website appears in the Cloudflare Radar Top 200,000.
Cloudflare Radar Top 100k Usage Statistics · Download List of All Websites using Cloudflare Radar Top 100k
The website appears in the Cloudflare Radar Top 100,000.
Unsplash Usage Statistics · Download List of All Websites using Unsplash
Free photo service.
Dutch Usage Statistics · Download List of All Websites using Dutch
Website content is written in Dutch. Based on HTML langauge attributes on the website
Dutch - Inferred Usage Statistics · Download List of All Websites using Dutch - Inferred
Based on the title and description text the website content is potentially Dutch.
Cart Functionality Usage Statistics · Download List of All Websites using Cart Functionality
The site has a link to a shopping cart which is not categorized under any of the cart technologies we track (custom implementation or not tracked yet).
Non Platform
Bug Bounty Usage Statistics · Download List of All Websites using Bug Bounty
The website has some form of responsible disclosure mechanism for the reporting of security vulnerabilities.
University or College Usage Statistics · Download List of All Websites using University or College
A known college and/or university.
PHP Usage Statistics · Download List of All Websites using PHP
PHP is a widely used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
Java EE Usage Statistics · Download List of All Websites using Java EE
Java Platform, Enterprise Edition (Java EE) is the industry standard for developing portable, robust, scalable and secure server-side Java applications.
Facebook Domain Verification Usage Statistics · Download List of All Websites using Facebook Domain Verification
Domain Verification provides a way for you to claim ownership of your domain in Facebook Business Manager.
Apple Mobile Web Clips Icon Usage Statistics · Download List of All Websites using Apple Mobile Web Clips Icon
This page contains an icon for iPhone, iPad and iTouch devices.
Viewport Meta Usage Statistics · Download List of All Websites using Viewport Meta
This page uses the viewport meta tag which means the content may be optimized for mobile content.
IPhone / Mobile Compatible Usage Statistics · Download List of All Websites using IPhone / Mobile Compatible
The website contains code that allows the page to support IPhone / Mobile Content.
AJAX Libraries API Usage Statistics · Download List of All Websites using AJAX Libraries API
The AJAX Libraries API is a content distribution network and loading architecture for the most popular, open source JavaScript libraries.
Euro Usage Statistics · Download List of All Websites using Euro
The website uses the € symbol on its website - meaning it may accept payment in Euros.
Currency
YouTube Usage Statistics · Download List of All Websites using YouTube
Embedded videos from YouTube.
Live Stream / Webcast · Online Video Platform · Social Video Platform
Google Search Appliance Usage Statistics · Download List of All Websites using Google Search Appliance
Google Search for Work system provides searching of internal business systems.
Enterprise
Hippo Usage Statistics · Download List of All Websites using Hippo
Hippo CMS delivers optimal and personalized digital experiences based on this insight.
jQuery Usage Statistics · Download List of All Websites using jQuery
JQuery is a fast, concise, JavaScript Library that simplifies how you traverse HTML documents, handle events, perform animations, and add Ajax interactions to your web pages. jQuery is designed to change the way that you write JavaScript.
JavaScript Library
jQuery UI Usage Statistics · Download List of All Websites using jQuery UI
jQuery UI provides abstractions for low-level interaction and animation, advanced effects and high-level, themeable widgets, built on top of the jQuery JavaScript Library, that you can use to build highly interactive web applications.
Google Hosted Libraries Usage Statistics · Download List of All Websites using Google Hosted Libraries
Google Hosted Libraries is a globally available content distribution network for the most popular, open-source JavaScript libraries.
Google Hosted jQuery Usage Statistics · Download List of All Websites using Google Hosted jQuery
jQuery hosted at Google.
Modernizr Usage Statistics · Download List of All Websites using Modernizr
Modernizr allows you to target specific browser functionality in your stylesheet.
Compatibility
Intersection Observer Usage Statistics · Download List of All Websites using Intersection Observer
API that can be used to understand the visibility and position of DOM elements relative to a containing element or to the top-level viewport.
DoubleClick.Net Usage Statistics · Download List of All Websites using DoubleClick.Net
DoubleClick enables agencies, marketers and publishers to work together successfully and profit from their digital marketing investments. Owned by Google and now referred to as DoubleClick Digital Marketing or Google Enterprise Advertising.
Google Remarketing Usage Statistics · Download List of All Websites using Google Remarketing
Google code specifically for remarketing/retargeting based advertising.
Retargeting / Remarketing
Facebook Usage Statistics · Download List of All Websites using Facebook
The website mentions facebook.com in some form.
LinkedIn Usage Statistics · Download List of All Websites using LinkedIn
The website mentions linkedin.com in some form.
Twitter Usage Statistics · Download List of All Websites using Twitter
The website mentions twitter.com in some form.
Instagram Usage Statistics · Download List of All Websites using Instagram
The website mentions Instagram in some form.
YouTube Link Usage Statistics · Download List of All Websites using YouTube Link
This website mentions YouTube.com on it in some form or another.
GitHub Usage Statistics · Download List of All Websites using GitHub
The website mentions github.com in some form.
Artificial Intelligence Usage Statistics · Download List of All Websites using Artificial Intelligence
This technology represents us finding some form of mention of AI or ChatGPT on the homepage of the website.
SSL by Default Usage Statistics · Download List of All Websites using SSL by Default
The website redirects traffic to an HTTPS/SSL version by default.
HSTS Usage Statistics · Download List of All Websites using HSTS
Forces browsers to only communicate with the site using HTTPS.
HSTS IncludeSubdomains PreLoad Usage Statistics · Download List of All Websites using HSTS IncludeSubdomains PreLoad
This website includes instructions for HSTS loading that would allow it to be submitted to the HSTS preload list.
Microsoft Azure DNS Usage Statistics · Download List of All Websites using Microsoft Azure DNS
This domain is verified with Microsoft Azure.
SPF Usage Statistics · Download List of All Websites using SPF
The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.
DMARC Usage Statistics · Download List of All Websites using DMARC
A technical specification created by a group of organizations that want to help reduce the potential for email-based abuse
DMARC
DMARC Quarantine Usage Statistics · Download List of All Websites using DMARC Quarantine
The domain has a DMARC policy of 'Quarantine'. This tells the receiving mail server that all emails that do not have your domain name in the “From” field (or any other set criteria) should be quarantined by default.
Microsoft Exchange Online Usage Statistics · Download List of All Websites using Microsoft Exchange Online
A rich hosted Exchange environment for every user without having to manage a server.
Business Email Hosting
DNSSEC Usage Statistics · Download List of All Websites using DNSSEC
DNSSEC strengthens DNS authentication by using digital signatures based on public key cryptography.
SURF Usage Statistics · Download List of All Websites using SURF
SURF is a cooperative in the Netherlands that brings together over 100 educational and research institutions to fully leverage the opportunities of digitalization for better and more flexible education and research.
Dutch hosting
Dutch Server Location Usage Statistics · Download List of All Websites using Dutch Server Location
The web server is located in the Netherlands.
Server Location
Apache Usage Statistics · Download List of All Websites using Apache
Apache has been the most popular web server on the Internet since April 1996.
Apache 2.4 Usage Statistics · Download List of All Websites using Apache 2.4
Apache version 2.4.*
Red Hat Enterprise Linux Usage Statistics · Download List of All Websites using Red Hat Enterprise Linux
Red Hat Enterprise Linux (often abbreviated to RHEL) is a Linux distribution produced by Red Hat and targeted toward the commercial market, including mainframes.
OpenSSL Usage Statistics · Download List of All Websites using OpenSSL
The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.
Google Webmaster Usage Statistics · Download List of All Websites using Google Webmaster
Webmaster tools provide you with a free and easy way to make your site more Google-friendly.
Content Delivery Network Usage Statistics · Download List of All Websites using Content Delivery Network
This page contains links that give the impression that some of the site contents are stored on a content delivery network.
Last technology detected on 16th January 2025. We know of 72 technologies on this page and 36 technologies removed from universiteitleiden.nl since 31st March 2001. Link to this page.
universiteitleiden.nl is ranked 52,999th in our top sites list. View BuiltWith Top Site Rank.
Add BuiltWith to for free! Get lookups easily and quickly.
Get a notification when universiteitleiden.nl adds new technologies.
Get universiteitleiden.nl profile as an XML, JSON, CSV or XLSX via the Domain API.
Can't find the technology you are looking for? Send us a suggestion, we will try and add it to our database.