Free tool · no signup

URL canonicaliser.
Spot duplicate-content twins.

Paste a list of URLs. We'll normalise each (lowercased host, stripped default ports, removedutm_*/fbclid/gclid tracking params, sorted query, optional www. collapse + trailing-slash policy) and group the ones that collapse to the same canonical resource. Pure client-side, nothing leaves your browser.

URLs

One URL per line. Blank lines dropped. http:// and https:// only.

Rules

Strip tracking params

utm_*, fbclid, gclid, msclkid, mc_cid/eid, _ga, _gl, hubspot tags, …

Sort query alphabetically

Re-orders ?z=&a= to ?a=&z= — doesn't change the resource.

Strip #fragment

Search engines ignore fragments anyway.

Collapse www. → non-www

Per-site call — only do this if your canonical is non-www.

Force https://

Off by default — flipping the scheme can genuinely change the resource.

Trailing slash

Extra params to strip (comma-separated)

Canonical groups

3 groups · duplicates found

Canonical×3
https://example.com/Page?id=42
- https://Example.com/Page?utm_source=newsletter&utm_medium=email&id=42
  lowercased host · stripped 2 tracking params
- https://example.com/Page?id=42&fbclid=ABC123
  stripped 1 tracking param
- https://example.com:443/Page?id=42#section
  stripped default port · stripped fragment
Canonical
http://example.com/other
Canonical
https://example.com/Page/?id=42

Duplicate content fragmenting your traffic? Vyrable's content engine consolidates canonical URLs across publishes so the same piece never competes with itself.

URL canonicaliser.Spot duplicate-content twins.

URL canonicaliser.
Spot duplicate-content twins.