



Flexible & developer-friendly
A solution built for agility, giving you control over your data without any extra hassle.
Real-Time Data Access
Quickly retrieve profiles without the burden of maintaining your own dataset. Our API employs advanced matching techniques to ensure precise data delivery.
Usage-Based Pricing
Only pay for the matches you use, allowing you to adjust search parameters and focus on the fields that matter most to you.
Up-to-Date Information
Every record is the latest available, with our database refreshed on a monthly schedule for optimal accuracy.
Scalable Performance
Designed to handle high volumes, our service consistently meets strict latency standards for fast, reliable results.
Solutions for any industry or use case
Customers trust our Company Enrichment API to power their products.
Technology Lookup »
Find out what websites are built with.
Email Finder »
Discover emails and their sources.
Lead Intelligence »
Create leads by the technologies they use.
Built for developers, by developers
Ful.io is a platform designed to empower you to build robust, scalable applications with ease. It provides a rich suite of modern tools, APIs, and intuitive interfaces that streamline the development process—from rapid prototyping to deploying enterprise-level solutions. Every feature is crafted with developer needs in mind, ensuring a seamless experience backed by thorough documentation and community support.
{
"domain_name": "youtube.com",
"Technology": [
{
"name": "IIS",
"description": "Internet Information Services (IIS) is a Microsoft product available for use only on Windows. It is a web server that can meet the varied needs of the user. It is designed to be flexible and high functioning. IIS is commonly used by businesses for the purpose of interactive web-based applications.
IIS utilizes different standard languages and protocols. It helps users with the creation of different elements and uses a basic communication protocol for easy exchange of information. It is also recognized for its high-quality security by way of SSL. It uses File Transfer Protocol (FTP) and Simple Mail Transfer Protocol (SMTP) as well.",
"icon": "IIS.png",
"website": "http://www.iis.net",
"category_slug": "Web-Servers",
"technology_slug": "IIS"
},
{
"name": "TikTok",
"description": "The website mentions tiktok.com (but not Douyin) in some form.",
"icon": "TikTok.png",
"website": "https://tiktok.com",
"category_slug": "Link",
"technology_slug": "tiktok"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "slider",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "jquery-plugin",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "JavaScript-Libraries",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "slider",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "jquery-plugin",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "JavaScript-Libraries",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "slider",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "jquery-plugin",
"technology_slug": "json"
},
{
"name": "JSON",
"description": "JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.",
"icon": "JSON.png",
"website": "https://json.org",
"category_slug": "JavaScript-Libraries",
"technology_slug": "json"
},
{
"name": "Twitch",
"description": "Embedded video from live streaming game website.",
"icon": "Twitch.png",
"website": "https://twitch.tv",
"category_slug": "Video-Players",
"technology_slug": "twitch"
},
{
"name": "Twitter App Card",
"description": "A way to represent mobile applications on Twitter and to drive installs.",
"icon": "Twitter App Card.png",
"website": "https://dev.twitter.com/cards/types/app",
"category_slug": "Mobile",
"technology_slug": "twitter-app-card"
},
{
"name": "Twitter App Card",
"description": "A way to represent mobile applications on Twitter and to drive installs.",
"icon": "Twitter App Card.png",
"website": "https://dev.twitter.com/cards/types/app",
"category_slug": "Mobile",
"technology_slug": "twitter-app-card"
},
{
"name": "Twitter App Card Android",
"description": "Google Play Android app mentioned in Twitter App Card.",
"icon": "Twitter App Card Android.png",
"website": "https://dev.twitter.com/cards/types/app",
"category_slug": "Mobile",
"technology_slug": "twitter-app-card-android"
},
{
"name": "Twitter App Card iPad",
"description": "iPad app mentioned in Twitter App Card.",
"icon": "Twitter App Card iPad.png",
"website": "https://dev.twitter.com/cards/types/app",
"category_slug": "Mobile",
"technology_slug": "twitter-app-card-ipad"
},
{
"name": "Twitter App Card iPhone",
"description": "iPhone app mentioned in Twitter App Card.",
"icon": "Twitter App Card iPhone.png",
"website": "https://dev.twitter.com/cards/types/app",
"category_slug": "Mobile",
"technology_slug": "twitter-app-card-iphone"
},
{
"name": "Twitter Platform",
"description": "The page embeds the Twitter platform in one method or another.",
"icon": "Twitter Platform.png",
"website": "http://twitter.com/about/resources",
"category_slug": "JavaScript-Libraries",
"technology_slug": "twitter-platform"
},
{
"name": "Twitter Platform",
"description": "The page embeds the Twitter platform in one method or another.",
"icon": "Twitter Platform.png",
"website": "http://twitter.com/about/resources",
"category_slug": "JavaScript-Libraries",
"technology_slug": "twitter-platform"
},
{
"name": "Lua",
"description": "Lua is a scripting language used by programmers. It is currently being maintained by a PUC-Rio team. It is characterized by its lightweight and easy-to-use nature. It is designed to support different types of programming. It is commonly used in the creation and design of industrial applications and games. It utilizes procedural syntax and is dynamically typed.
Lua is preferred for its ease of configuration and efficient prototyping. It is recognized as one of the fastest scripting languages. It is designed to be portable as well. It is available for use on Unix, Windows, Android and iOS, among others. It has a robust community and workshops as well.",
"icon": "Lua.png",
"website": "http://www.lua.org",
"category_slug": "Programming-Languages",
"technology_slug": "Lua"
},
{
"name": "YouTube IFrame Embed",
"description": "An HTML5 supported embed for YouTube videos.",
"icon": "YouTube IFrame Embed.png",
"website": "http://apiblog.youtube.com/2010/07/new-way-to-embed-youtube-videos.html",
"category_slug": "Video-Players",
"technology_slug": "youtube-iframe-embed"
},
{
"name": "Threads",
"description": null,
"icon": null,
"website": null,
"category_slug": "Widgets",
"technology_slug": ""
},
{
"name": "Threads",
"description": null,
"icon": null,
"website": null,
"category_slug": "Link",
"technology_slug": ""
},
{
"name": "Cloudflare Network Error Logging",
"description": "Cloudflare Network Error Logging is a feature that enables website owners to monitor and troubleshoot network-related issues by providing valuable insights into performance problems affecting their site visitors. This service allows site operators to collect, analyze, and respond to errors reported by end-users' browsers, such as DNS resolution, TCP connection failure, and TLS certificate issues. By offering real-time reports and aggregated statistics, Cloudflare helps businesses identify and address potential connectivity issues efficiently, ensuring smoother user experiences and minimizing downtime. Integration is simply done through adding the "Report-To" response header and configuring the desired endpoint.
",
"icon": "CloudFlare.svg",
"website": "https://developers.cloudflare.com/logs/reference/log-fields/zone/nel_reports",
"category_slug": "Hosting",
"technology_slug": "Cloudflare-Network-Error-Logging"
},
{
"name": "Cloudflare Network Error Logging",
"description": "Cloudflare Network Error Logging is a feature that enables website owners to monitor and troubleshoot network-related issues by providing valuable insights into performance problems affecting their site visitors. This service allows site operators to collect, analyze, and respond to errors reported by end-users' browsers, such as DNS resolution, TCP connection failure, and TLS certificate issues. By offering real-time reports and aggregated statistics, Cloudflare helps businesses identify and address potential connectivity issues efficiently, ensuring smoother user experiences and minimizing downtime. Integration is simply done through adding the "Report-To" response header and configuring the desired endpoint.
",
"icon": "CloudFlare.svg",
"website": "https://developers.cloudflare.com/logs/reference/log-fields/zone/nel_reports",
"category_slug": "Issue-Trackers",
"technology_slug": "Cloudflare-Network-Error-Logging"
},
{
"name": "Cloudflare Network Error Logging",
"description": "Cloudflare Network Error Logging is a feature that enables website owners to monitor and troubleshoot network-related issues by providing valuable insights into performance problems affecting their site visitors. This service allows site operators to collect, analyze, and respond to errors reported by end-users' browsers, such as DNS resolution, TCP connection failure, and TLS certificate issues. By offering real-time reports and aggregated statistics, Cloudflare helps businesses identify and address potential connectivity issues efficiently, ensuring smoother user experiences and minimizing downtime. Integration is simply done through adding the "Report-To" response header and configuring the desired endpoint.
",
"icon": "CloudFlare.svg",
"website": "https://developers.cloudflare.com/logs/reference/log-fields/zone/nel_reports",
"category_slug": "Hosting",
"technology_slug": "Cloudflare-Network-Error-Logging"
},
{
"name": "Cloudflare Network Error Logging",
"description": "Cloudflare Network Error Logging is a feature that enables website owners to monitor and troubleshoot network-related issues by providing valuable insights into performance problems affecting their site visitors. This service allows site operators to collect, analyze, and respond to errors reported by end-users' browsers, such as DNS resolution, TCP connection failure, and TLS certificate issues. By offering real-time reports and aggregated statistics, Cloudflare helps businesses identify and address potential connectivity issues efficiently, ensuring smoother user experiences and minimizing downtime. Integration is simply done through adding the "Report-To" response header and configuring the desired endpoint.
",
"icon": "CloudFlare.svg",
"website": "https://developers.cloudflare.com/logs/reference/log-fields/zone/nel_reports",
"category_slug": "Issue-Trackers",
"technology_slug": "Cloudflare-Network-Error-Logging"
},
{
"name": "HSTS",
"description": "HSTS (HTTP Strict Transport Security) is a security policy mechanism that protects websites against protocol downgrade attacks and cookie hijacking. Implemented by web servers, HSTS enforces communication via HTTPS, ensuring encrypted and secure data transmission. Browsers store HSTS settings for a specified duration, preventing users from inadvertently accessing unsecured versions of a website. HSTS also prevents man-in-the-middle attacks, ensuring users aren't deceived by forged certificates. Overall, HSTS improves web security by enforcing strict HTTPS usage and avoiding insecure HTTP connections.
",
"icon": "HSTS.png",
"website": "https://www.rfc-editor.org/rfc/rfc6797#section-6.1",
"category_slug": "Security",
"technology_slug": "HSTS"
},
{
"name": "HTTP/3",
"description": "HTTP/3 is the latest version of the Hypertext Transfer Protocol, the foundation for data communication on the World Wide Web. It improves upon HTTP/2 by replacing the Transmission Control Protocol (TCP) with the faster and more efficient QUIC protocol, which uses User Datagram Protocol (UDP) to resolve network congestion and reduce latency. This results in quicker loading times for web pages and better performance for web applications. HTTP/3 provides enhanced security, as encrypted communication is integral to the QUIC protocol, preventing information exposure and protecting against third-party interference. It is gradually being adopted across modern browsers and websites.
",
"icon": "HTTP3.svg",
"website": "https://httpwg.org/",
"category_slug": "Miscellaneous",
"technology_slug": "HTTP3"
},
{
"name": "HTTP/3",
"description": "HTTP/3 is the latest version of the Hypertext Transfer Protocol, the foundation for data communication on the World Wide Web. It improves upon HTTP/2 by replacing the Transmission Control Protocol (TCP) with the faster and more efficient QUIC protocol, which uses User Datagram Protocol (UDP) to resolve network congestion and reduce latency. This results in quicker loading times for web pages and better performance for web applications. HTTP/3 provides enhanced security, as encrypted communication is integral to the QUIC protocol, preventing information exposure and protecting against third-party interference. It is gradually being adopted across modern browsers and websites.
",
"icon": "HTTP3.svg",
"website": "https://httpwg.org/",
"category_slug": "Miscellaneous",
"technology_slug": "HTTP3"
},
{
"name": "Google API",
"description": "The Google API JavaScript library encompasses a wide range of JavaScript libraries provided by Google. These libraries facilitate the integration of various Google services and APIs into JavaScript applications. They include libraries for Google Maps, Google Charts, Google Places, Google Geocoding, Google Drive, Google Calendar, and more.",
"icon": "Google API.png",
"website": "https://code.google.com",
"category_slug": "JavaScript-Libraries",
"technology_slug": "google-api"
},
{
"name": "Android Alternative",
"description": "This website specifies an alternative link for an Android specific web application.",
"icon": "Android Alternative.png",
"website": "https://developer.android.com/training/app-indexing/enabling-app-indexing.html",
"category_slug": "Mobile",
"technology_slug": "android-alternative"
},
{
"name": "Android Alternative",
"description": "This website specifies an alternative link for an Android specific web application.",
"icon": "Android Alternative.png",
"website": "https://developer.android.com/training/app-indexing/enabling-app-indexing.html",
"category_slug": "Mobile",
"technology_slug": "android-alternative"
},
{
"name": "Instagram",
"description": "A social media platform link.",
"icon": "",
"website": "",
"category_slug": "Link",
"technology_slug": "instagram"
},
{
"name": "Discord",
"description": "Voice and text chat widget for Gamers.",
"icon": "Discord.png",
"website": "https://discordapp.com",
"category_slug": "Widgets",
"technology_slug": "discord"
},
{
"name": "Discord",
"description": "Voice and text chat widget for Gamers.",
"icon": "Discord.png",
"website": "https://discordapp.com",
"category_slug": "Live-Chat",
"technology_slug": "discord"
},
{
"name": "HTML5 DocType",
"description": "A DOCTYPE is a required preamble.",
"icon": "HTML5 DocType.png",
"website": "https://html.spec.whatwg.org/multipage/syntax.html#the-doctype",
"category_slug": "Documentation",
"technology_slug": "html5-doctype"
},
{
"name": "Google Web Server",
"description": "Google Web Server is created to run offline. It is available for Chrome as an open-source HTTP server. It provides several customized solutions as well. It provides several high-quality solutions from Google Cloud Marketplace which are characterized by quick deployment. Google Web Server provides pricing based on the type of product chosen along with usage.",
"icon": "Google.svg",
"website": "http://en.wikipedia.org/wiki/Google_Web_Server",
"category_slug": "Web-Servers",
"technology_slug": "Google-Web-Server"
},
{
"name": "HTTP/2",
"description": "HTTP/2, which stands for Hyper Text Transfer Protocol/2 is an application layer protocol used by end-users and developers for the purpose of creating high-performance communication between servers on the World Wide Web and clients. The first version of HTTP came out in 1991 and the protocol technologies have undergone significant development and update since then.
HTTP/2 comes with several upgrades such as multiplexed streams without delay between stream transmissions along with reduced latency. It is also designed to serve the SEO needs of the user. It comes with an HTTP/2 Server Push feature along with binary protocols. HTTP/2 remains a popular option for its ability to simplify the process.",
"icon": "http2.png",
"website": "https://http2.github.io",
"category_slug": "Miscellaneous",
"technology_slug": "HTTP2"
},
{
"name": "Person Schema",
"description": "A human being.",
"icon": "",
"website": "https://schema.org/Person",
"category_slug": "Schema",
"technology_slug": "person-schema"
},
{
"name": "Person Schema",
"description": "A human being.",
"icon": "",
"website": "https://schema.org/Person",
"category_slug": "frameworks",
"technology_slug": "person-schema"
}
]
}
Testimonial

These web technologies quickly became a game-changer for our business. Lead generation projects that used to take a whole team are completely automatic now. We were able to segment traffic based on location, identify more prospects, and onboard more clients. I can't say enough good things about Ful.io
Todd Dunsmore
Doja Marketing/Defi Founder
Ful.io's apps and tools have completely changed the way we look at traffic and identify prospects. Before, our R&D team tried BuiltWith, then worked to develop our own technology. But with Ful.io, we can save both time and money.
Robert Kaene
The Wednesday Club
We're always looking for new ways to boost our advertising efforts and analyze websites to improve our processes. Ful.io has been a perfect partner throughout. We've been able to discover more valuable data on prospects than we ever did on our own.
Mad Singers
SEO Mastery Summit
Any ecommerce platform not using Ful.io's technologies is seriously missing out. The crawling tool at Ful.io is the best we've used so far. We love that you can pull it up right in the Chrome browser too. Location, contact info, RSS, the speed we can draw in new clients now... Ful.io is amazing
Yana L
SEO Consultant
Companies need an edge, and Ful.io provided that edge for us. We'd previously used BuiltWith, but the data and analytics capabilities of Ful.io were a better fit for us.
Nicholas Altimore
Sirlinksalot
We used to manually upload contact details and other data, but it took way too long. We needed a solution that could automate the process and free up resources. Ful.io just works for us. Their technology is incredible.
Chris Richards
Utterly DigitalHow it Work?
A clear breakdown of our process, tailored to enhance your business intelligence.
On-Demand Profile Lookup
Access detailed profiles instantly without needing to host your own dataset, thanks to our intelligent matching engine.
Customizable Payment Model
Our pay-per-match approach lets you define the level of matching detail and the essential fields, ensuring you only pay for what you truly need.
Continuous Data Refresh
We provide the most current data available by updating our records every month, so you’re always working with fresh insights.
Engineered for Growth
With performance built to scale, our API is capable of handling increasing loads while maintaining low latency for seamless operations.
Grow Your Business with Ful.io
Experience seamless integration with powerful, developer-driven tools that simplify your digital transformation. Our expert platform empowers your business to innovate, scale, and succeed in today's competitive landscape.
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