[5.3][SEF] Elimination of duplicate pages, SEO improvements: redirects for IDs and www, canonical links

[universewrld]

Is your feature request related to a problem? Please describe.

Even though Joomla 5.2 has some new settings to eliminate duplicate pages, there are still #44263 duplicate pages in the CMS.
I suggest reducing the number of duplicate pages in @joomla.

Describe the solution you'd like

New options for the System - SEF plugin:

1. Redirect pages with ID (articles, categories) to the version of pages without ID
2. Redirect from the version of a page with www to the version of a page without www (or vice versa)
3. Canonical links for pagination pages (for pages like ?start=10)

What Joomla has already done to reduce duplicate pages:

• Search Engine Friendly URLs
• Use URL Rewriting
• Force HTTPS
• Strict handling of index.php
• Trailing slash for URLs
• Strict Routing
• WWW redirect
• IDs redirect
• Canonical links

Additional context

This will help eliminate almost all duplicate pages for search engines.
The fewer duplicate pages processed by search robots like @google, @google-gemini, @microsoft, @openai, etc, the less energy will be released by data processing centers, the less effect will be on the environment and climate change.

Redirects and Google Search - https://developers.google.com/search/docs/crawling-indexing/301-redirects
How to specify a canonical URL with rel="canonical" and other methods - https://developers.google.com/search/docs/crawling-indexing/consolidate-duplicate-urls

[fgsw]

Duplicate of #44263

[universewrld]

Duplicate of #44263

this is not a duplicate, this is a feature request.
the previous issue was a bug report. do you see the difference?

you can close the previous issue #44263, but not this one.

[richard67]

2. Redirect from the version of a page with www to the version of a page without www

What if I want it vice versa, redirect non www to www?

[universewrld]

2. Redirect from the version of a page with www to the version of a page without www

What if I want it vice versa, redirect non www to www?

yes, that's what I meant.
there should be an option for WWW:

• don't use redirect
• redirect to WWW
• redirect to no WWW