Domain Extractor - TestMu AI (Formerly LambdaTest)

What is the Domain Extractor?

The Domain Extractor is a free online tool that scans a list of URLs, email addresses, or pasted text and pulls out the domain names inside it, such as example.com. Instead of copying each domain by hand, you paste your input, click Extract, and get a clean, deduplicated list in seconds. It is built for SEO specialists, marketers, developers, and QA engineers who work with large lists of links or addresses.

The extractor reads any format, strips protocols, paths, and the @ in emails, and returns just the domains. You can keep subdomains or collapse them to the root, filter by TLD, sort, and export. Everything runs locally in your browser, so your data stays private.

How to use the Domain Extractor?

Extracting domains takes only a few seconds, and nothing is installed or uploaded. Follow these steps:

• Paste your input: Paste a list of URLs, email addresses, HTML, logs, or any text containing domains into the input box. You can also load a file or the built-in sample.
• Choose your filters: Pick filters such as remove duplicates, sort alphabetically, force lowercase, include or exclude TLDs, or collapse subdomains to root domains.
• Extract the domains: Click Extract Domains. The tool scans the input, strips protocols, paths, and the @ in emails, and pulls out every domain it finds.
• Review the results: Check the list of extracted domains with live counters for total matches, unique domains, and the filtered result count.
• Copy or export: Copy the cleaned domain list to your clipboard or export it as a TXT or CSV file for use in your spreadsheet, SEO tool, or script.

Features of the Domain Extractor

As a tool, the Domain Extractor turns messy input into a clean domain list with a single click. Here are the features of our extractor:

• Works on Any Input: Plain text, HTML, logs, JSON, CSV, email bodies, or a mixed list all work, because the matcher finds domains regardless of surrounding format.
• URL and Email Parsing: Protocols, paths, and query strings are stripped from URLs, and the domain after the @ is captured from email addresses.
• Subdomain Control: Keep subdomains like blog.example.com, or collapse every entry to its root domain in one toggle.
• Dedupe, Sort, and Filter: Remove duplicates, sort alphabetically, force lowercase, set a minimum length, and include or exclude specific TLDs in a single pass.
• Export Ready: Copy the result or download it as TXT or CSV for spreadsheets, SEO tools, or scripts.
• Browser-Based Privacy: All extraction runs locally in your browser, so your URLs, emails, and logs are never uploaded.

Who can use the Domain Extractor?

Anyone who works with lists of links or addresses can save time with the extractor. These roles get the most value:

• SEO Specialists: Pull referring domains and outbound links from a crawl or backlink export to audit link neighbourhoods.
• Marketers and Sales: Turn a list of email addresses into a clean set of unique company domains for outreach and CRM cleanup.
• Developers: Extract the hosts a page or log references to build allowlists, configs, or test fixtures.
• QA and SDET Teams: Review the domains a page calls to check network requests and third-party trackers while testing.
• Analysts: Normalize messy URL and email columns into domains before analysis in a spreadsheet.

Use cases of the Domain Extractor

Pulling domains out of raw text solves a surprising number of everyday tasks. The extractor speeds up each of these:

• Backlink and Referral Audits: Reduce a long list of links to the unique domains that link to you, then prioritize the review.
• CRM and Lead Cleanup: Convert email lists into company domains to dedupe accounts and enrich records.
• Log and Traffic Analysis: Extract the hosts in server logs or a HAR file to see which domains a system talks to. The UTM Builder helps when you then tag campaign links.
• Security and Allowlists: Build a clean domain allowlist or blocklist from a sample of traffic or content.
• URL Workflows: Pair extraction with the URL Extractor when you need the full links rather than just the domains.

This tool is maintained by TestMu AI (formerly LambdaTest), the team behind a unified testing platform, so it reflects the same focus on clean, reliable data that QA and web teams depend on.

Frequently Asked Questions (FAQs)

What is a domain extractor?

A domain extractor is an online tool that scans a list of URLs, email addresses, or pasted text and pulls out the domain names inside it, such as example.com. It returns a clean, deduplicated list instead of making you copy each domain by hand.

How do I extract a domain from a URL?

Paste the URL or a whole list of URLs into the input box and click Extract Domains. The tool reads each link, strips the protocol, path, and query string, and returns just the domain. You can keep subdomains or collapse them to the root domain.

Can I extract domains from a list of email addresses?

Yes. Paste email addresses and the extractor captures the domain that follows the @ sign, so user@example.com yields example.com. This is handy for cleaning CRM exports, sales lists, or signup data into a list of unique company domains.

Is the domain extractor free to use?

Yes, the domain extractor is completely free with no signup, login, or usage limit. You can extract as many domains as your browser memory allows. The tool is maintained by TestMu AI (formerly LambdaTest).

Is my pasted data safe and private?

Yes. All extraction runs locally in your browser using JavaScript, and nothing is uploaded to a server. Your URLs, emails, and logs never leave your machine, which keeps sensitive exports and internal log files private.

Does it handle subdomains and root domains?

Yes. Subdomains such as blog.example.com or api.service.io are captured by default. Turn off Include Subdomains to collapse each entry to its root domain, so api.example.com and blog.example.com both reduce to example.com.

What input formats does the extractor support?

You can paste plain text, HTML source, server logs, JSON, CSV, email bodies, or a mixed list of URLs and emails. The pattern matcher finds domains regardless of the surrounding format, so you do not need to clean the input first.

Can I deduplicate, sort, and filter the output?

Yes. In one pass you can remove duplicates, sort alphabetically, force lowercase, set a minimum length, and include or exclude specific TLDs. Live counters show total matches, unique domains, and the filtered result count.

How is a domain extractor useful for SEO and QA?

SEO teams pull outbound links, referring domains, and third-party script hosts to audit link neighbourhoods. QA and SDET teams extract the domains a page calls to review network requests and trackers while testing across browsers and devices.