🛠️ How It Works – Collect Sub-domains

1. Paste Your Input – Insert your list of URLs or domains into the input box.
2. Click “Collect Sub-domains” – The tool will scan each entry and extract sub-domains.
3. View Counts – See stats for total input lines, duplicates removed, and number of sub-domains collected.
4. Get Your List – A cleaned, unique list of sub-domains appears instantly.
5. Copy or Download – Save your collected sub-domains for analysis or reporting.

⚡ Why Use a Collect Sub-domains Tool?

• Effortless Extraction – Pull sub-domains automatically from raw inputs—no manual parsing required.
• Accurate Deduplication – Avoid redundancy with automatic duplicate detection and removal.
• Time-Saving – Clean and structured output appears immediately, enhancing productivity.

💡 Tips for Best Results

• Paste each domain or URL on its own line for best extraction accuracy.
• Combine with tools like Clean Sub-domains or Sort Text Lines to further refine your list.
• Use the displayed stats to verify how many sub-domains were found and filtered.

❓ Frequently Asked Questions

What does the Collect Sub-domains tool do?

It scans each line of your input and automatically extracts the sub-domain portion, removes duplicates, and displays a clean list.

How do I collect sub-domains online?

Paste your URLs/domains, click Collect Sub-domains, and instantly get a summary of input, duplicates removed, and results—a clean list of sub-domains ready to copy or download.

Is this tool safe?

Yes ✅ All processing is done in your browser—no data is uploaded or stored.