Should every web page have a canonical tag?

[makoo]

Should every web page have a canonical tag?

[godwin]

Do include a canonical tag on every page, without exception
All pages (including the canonical page) should contain a canonical tag to prevent any possible duplication. Even if there are no other versions of a page, then that page should still include a canonical tag that links to itself.

[PrimeItSolution]

Yes, I think you should use a canonical tag on every page. It helps search engines to select appropriate URLs copy.

[chandrao7]

Do include a canonical tag on every page, without exception
All pages (including the canonical page) should contain a canonical tag to prevent any possible duplication. Even if there are no other versions of a page, then that page should still include a canonical tag that links to itself.

[vjvysakh]

All pages should contain a canonical tag to prevent any possible duplication. Even if there are no other versions of a page, then that page should still include a canonical tag that links to itself.

[jayammrg]

All pages (including the canonical page) should contain a canonical tag to prevent any possible duplication. Even if there are no other versions of a page, then that page should still include a canonical tag that links to itself.

[jayam]

The canonical tag is a page-level meta tag that is placed in the HTML header of a webpage. It tells the search engines which URL is the canonical version of the page being displayed