How to use it
- Paste text, HTML, CSV content, or a domain list into the input area.
- Select Process and Analyze List.
- Read the unique-domain total above the results.
- Review the extracted host, derived extension, and syntax result in each row.
- Use Copy Output to save the processed inventory.
The regular expression returns ASCII host-like strings only. It does not preserve URL schemes, paths, queries, or fragments.
What is the purpose of the tool
Domain Extractor from Text turns mixed pasted content into a compact host inventory. It is useful when notes, reports, markup, or exported text contain domains among unrelated content.
All processing happens in the browser. Matches are converted to lowercase and deduplicated before the result table appears.
What parameters it generates in output
Processed Inventory shows the number of unique domain-like matches. # gives each result a sequential row number.
Identified Domain / Host contains the lowercase string matched by the extractor. TLD / Extension joins all labels after the first dot. Syntax Status displays Valid RFC when every label passes the local length and edge-character pattern. It displays Invalid Syntax when that test fails.
FAQs related to that specific tool
Does the extractor preserve complete URLs?
No. It returns domain-like host strings without schemes, paths, queries, or fragments.
Why does a repeated domain appear only once?
The browser lowercases all matches and removes duplicates before building the table.
Will the tool combine subdomains under one root domain?
No. A matched subdomain remains a separate host string.
Why was a Unicode domain not extracted?
The matching pattern accepts ASCII letters, numbers, and hyphens only.
Does Valid RFC prove that a domain exists?
No. The badge checks the local syntax pattern and does not query DNS or a domain registry.
How is the extension column created?
It joins every label after the first dot, so example.co.uk produces .co.uk.
Is pasted content sent to a server?
No. Extraction and table generation run in the browser.