Canonical URL Generator
Build the perfect canonical URL with a live normalization pipeline you can see step-by-step, a curated tracking-parameter stripper (utm_*, gclid, fbclid & 50+ more), an hreflang builder, and a bulk duplicate-URL grouper that clusters variants by the canonical they collapse to. Export HTML link tags or Next.js metadata.
About this ToolHow it works, benefits & use casesTap to collapse
Duplicate content — the same page reachable at multiple URLs because of trailing slashes, mixed case, default ports, or reordered query parameters — splits your ranking signals and confuses crawlers. This tool generates the rel="canonical" link tag that points search engines to your preferred URL, and it normalizes that URL as you type: it strips trailing slashes, removes default ports (:80, :443), and sorts query parameters alphabetically so equivalent URLs collapse to one canonical form. The output updates live, with no button to press. You can optionally attach alternate-language rel="alternate" hreflang tags by adding language/URL pairs. As you work, the tool runs a quick check for common canonical mistakes — protocol mismatches, domain mismatches, and an HTTPS page pointing to an HTTP canonical — and surfaces them in an issues panel, alongside a set of best practices. Everything happens in your browser, and the configuration is captured in a shareable URL.
How to Use
- 1Enter your page URL in the "Page URL" field — the canonical tag appears immediately in the output panel.
- 2Check the "Normalized" line under the input to see how the URL was cleaned (trailing slash, default port, sorted query params).
- 3To add language variants, tick "Include alternate language tags (hreflang)" and add language code / URL pairs with the "Add" button.
- 4Review the "Issues detected" panel if it appears — it flags protocol or domain mismatches and HTTPS-to-HTTP problems.
- 5Copy or download the generated tag (canonical.html), or share the setup via its URL.
Key Benefits
- Live output — the canonical tag regenerates as you type, no submit step
- Automatic URL normalization: strips trailing slashes, removes default ports, sorts query parameters
- Optional rel="alternate" hreflang tags for multi-language pages, added inline
- Built-in issue checks for protocol mismatch, domain mismatch, and HTTPS-to-HTTP canonicals
- Shows the normalized URL alongside your input so you can see exactly what changed
- Curated canonical best-practices list right on the page
- Runs in the browser with a shareable URL capturing your input
Common Use Cases
- Adding self-referencing canonicals to pages to consolidate ranking signals
- Normalizing URLs that differ only by trailing slash, case, or query-param order
- Pairing a canonical with hreflang alternates on internationalized pages
- Catching an accidental HTTP canonical on an HTTPS page before it ships
- Standardizing the canonical URL format across a site's templates
Canonical URL
https://www.example.com/Blog/My-Post?id=42
Normalization pipeline (3 changes)
Drop into your <head> (or app/route metadata)
<link rel="canonical" href="https://www.example.com/Blog/My-Post?id=42" />
- Fragment (#…) present — Google ignores fragments in canonicals; strip it.
- Tracking params present (utm_source, utm_campaign) — strip them so variants don't compete.
Page URL
Paste any messy variant — we’ll normalize it to the canonical you should declare.
Normalization rules
Strip tracking parameters
63 known analytics/ad params across 6 networks.
View the parameter database
utm_sourceutm_mediumutm_campaignutm_termutm_contentutm_idutm_source_platformutm_creative_formatutm_marketing_tacticgclidgclsrcdclidgbraidwbraidgad_source_ga_glga_sourcega_mediumga_campaignfbclidfb_action_idsfb_action_typesfb_sourcefb_refigshidigshmsclkidmc_cidmc_eidli_fat_idtwclidttclidmkt_tokhsa_acchsa_camhsa_grphsa_adhsa_srchsa_tgthsa_kwhsa_mthsa_nethsa_ver_hsenc_hsmivero_idvero_convrefreferrersourcecmpidcampaignidadgroupidyclidmkwidpcrids_kwcidck_subscriber_idoly_anon_idoly_enc_idspmscmhreflang alternates (0)
No alternates. Add language/region versions of this page for international SEO.
See the canonical, don’t guess it
Canonical tags exist to collapse duplicate variants — www vs apex, trailing slashes, mixed case, and especially tracking params — onto one preferred URL. This tool shows the exact normalization pipeline firing rule-by-rule, strips 63+ known tracking params, and in bulk mode groups a list of messy URLs into the canonicals they collapse to, so you can spot duplicate clusters across a whole site. Export HTML <link> tags or a Next.js metadata.alternates block.
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It parses the URL and applies three normalizations: it removes a trailing slash from the path (keeping a lone "/" for the root), removes default ports (:80 for HTTP, :443 for HTTPS), and sorts the query-string parameters alphabetically. The result is shown on the "Normalized" line and used inside the generated canonical tag.
A self-referencing canonical — where a page points to its own preferred URL — is recommended for most pages because it consolidates signals and guards against accidental duplicates from tracking parameters or alternate paths. The best-practices panel on the page reflects this guidance.