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Free Online Domain Extractor from Webpage, URL and HTML
The Domain Extractor is a free, fast, and easy-to-use online tool that lets you extract all domain names from any webpage, URL, or pasted HTML text. Whether you are an SEO professional analyzing backlink profiles, a cybersecurity researcher investigating phishing pages, a marketer auditing competitor websites, or a developer scraping domain data, this tool saves you hours of manual work.
Simply enter a webpage URL and the tool fetches the page source code, scans through every link, script source, image reference, stylesheet, iframe, and inline text to pull out every unique domain name. You can also paste raw HTML source code or any block of text containing URLs, and the extractor will find every domain embedded within it. All results are deduplicated, cleaned (no http://, https://, www prefix clutter), and presented in a neat list ready to copy or download.
Key Features
Extract from URL
Enter any webpage URL and the tool fetches the HTML source to extract all linked domains automatically.
Paste HTML or Text
Paste raw HTML source code, plain text, or any content containing URLs and get all domains extracted instantly.
Smart Detection
Finds domains in href attributes, script sources, image URLs, email addresses, inline styles, and plain text references.
Clean Output
Removes protocols (http, https, ftp), paths, query strings, and fragments. Gives you pure domain names only.
Filter and Search
Instantly filter the extracted domain list with a live search bar. Find specific domains in seconds.
Export Options
Copy all domains to clipboard with one click or download the complete list as a CSV file for further analysis.
How to Use the Domain Extractor
Enter a URL or Paste Content
Type or paste a full webpage URL into the input field at the top. Alternatively, click the paste option and drop in raw HTML source code, a block of text, or any content that contains URLs and domain references.
Configure Extraction Options
Choose whether to include subdomains (like blog.example.com), sort results alphabetically, or extract only root domains (example.com). These options let you tailor the output to your exact needs.
Click Extract
Hit the Extract button and the tool will fetch the webpage using a CORS proxy for cross-origin access, parse through the entire source code, and identify every unique domain name referenced on the page.
Review, Filter, and Export
Browse the clean list of extracted domains. Use the search bar to filter results. Copy individual domains, copy the full list to your clipboard, or download everything as a CSV file for spreadsheets and analysis tools.
Use Cases
SEO and Backlink Analysis
Extract all external domains linked from a webpage to audit outbound links, identify backlink sources, and analyze competitor link profiles.
Cybersecurity Research
Identify all domains referenced in a suspicious webpage, phishing email HTML, or malicious script for threat intelligence and investigation.
Competitor Research
Discover which third-party services, analytics tools, ad networks, and CDN providers your competitors use by extracting domains from their pages.
Content Auditing
Scan your own website pages to find all external domain references, broken link sources, and unauthorized third-party scripts loaded on your site.
Ad Tech and Marketing
Extract domains from ad tags, tracking scripts, and marketing emails to map the full chain of advertising and analytics services in use.
Web Development
Quickly list all external dependencies, API endpoints, font providers, and CDN domains loaded by a webpage for performance optimization and security review.
Frequently Asked Questions
What is a domain extractor?
A domain extractor is an online tool that scans a webpage, URL, or block of HTML text and pulls out all unique domain names found within links, scripts, images, and other references. It strips away protocols like http:// and https://, removes URL paths and parameters, and gives you a clean deduplicated list of just the domain names.
How does this tool extract domains from a URL?
When you enter a URL, the tool uses a CORS proxy service to fetch the full HTML source code of that webpage. It then uses multiple regular expression patterns to detect domain names inside href attributes, src attributes, inline URLs, email addresses, and plain text references throughout the entire page source.
Can I extract domains from pasted HTML or text?
Yes. Click the paste option below the URL input to open a text area. You can paste raw HTML source code, email headers, plain text, JSON data, or any content that contains URLs and domains. The tool will scan through everything and extract all domain names it finds.
Does this tool extract subdomains?
Yes. By default, the tool extracts full domain names including subdomains like blog.example.com and mail.example.com. You can toggle the subdomain option off or enable root domains only mode to collapse everything down to the base domain like example.com.
Is this tool free to use?
Yes. This domain extractor is completely free with no sign-up, no limits, and no watermarks. All processing happens directly in your browser. No data is stored on any server.
What if the URL fetch fails?
The tool tries multiple CORS proxy services automatically. If all fail due to the target website blocking proxies or being offline, you can always view the page source manually in your browser (right-click, View Page Source), copy the HTML, and paste it into the text area for extraction.
Start Extracting Domains Now
Enter any URL or paste your HTML above to instantly extract a clean, deduplicated list of every domain name. No installation, no sign-up, no cost.