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Web Collection Studio

Clean, Filter and Deduplicate URL Lists for Free

Clean up to 10,000 URLs locally for free. Resolve relative links, deduplicate addresses, remove known tracking parameters and export filtered TXT, CSV or JSON.

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URL List Cleaner

Choose your input to begin
  1. Add input
  2. Choose options
  3. Process
  4. Use your result
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Full instructions and common questions

URL List Cleaner

Clean up to 10,000 URLs locally for free. Resolve relative links, deduplicate addresses, remove known tracking parameters and export filtered TXT, CSV or JSON.

How to use

  1. Paste one URL per line or load the sample.
  2. Set the base URL, exact hostname and path filter; choose tracking-parameter and fragment removal.
  3. Review kept, duplicate, invalid and filtered counts, then export TXT, CSV or JSON.

Try an example

The two news URLs merge after removing utm_source and fragments. sku=42 remains and /docs resolves to https://example.com/docs.

Limits and privacy

Up to 10,000 URLs / 2 MB. Does not verify that pages exist. Other parameter order is retained; removing fragments may combine app routes.

Common questions

Does the hostname filter include subdomains?

It matches the exact hostname. Enter a subdomain separately.

Can I keep tracking parameters?

Yes. Clear the corresponding checkbox.

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Free use and requirements

Use this tool for free without a KitNelo account. Processing runs in your browser; input limits, browser support and device memory still apply.

Up to 10,000 URLs / 2 MB. URLs are not visited; verify the result before crawling.

Read KitNelo data and privacy details

Free online functions: steps and checks

Clean a Crawler URL List for Free

Paste a URL list and provide a base address when relative links need resolving. Filter by host or path and inspect the normalized results before exporting; the browser processes the list without visiting or validating the destination pages.

Deduplicate Website Links for Free

Normalize up to ten thousand addresses within the two-megabyte input limit and review repeated links. Compare retained URLs with the originals before using the output for a crawl, especially where query strings identify distinct page content.

Remove UTM Tracking Parameters for Free

Remove supported tracking parameters from a prepared link list while retaining the cleaned addresses for review. Check that useful business query values remain, then export TXT, CSV or JSON for the next step in your URL workflow.

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