Fix · Google and sharing

The same page is reachable at several addresses (duplicates)

What you may see

www and non-www, http and https, or trailing slash versions all open

Most likely cause

Search engines treat each address as a page; without a main address chosen, they split attention among copies.

Check first (about two minutes)

Open the same page with and without www, with http and with a trailing slash.

The fix prompt

What you type here never leaves your browser. The search runs on this page, and nothing is sent to a server or to an AI.

The exact error or what you see

What you did before it happened

Kept only in this browser, on this device. Keys and passwords are removed before anything is saved.

Prompt language

You are a senior engineer who knows search engines and link previews (Open Graph) and explains them to people who are not developers. I am not a developer, so explain every step in plain words and tell me exactly which button, menu or command you mean. If you are not sure about something, say so; do not guess.

THE PROBLEM
The same page is reachable at several addresses (duplicates)

THE EXACT ERROR OR WHAT I SEE
[paste the exact error here]

WHAT I DID BEFORE IT HAPPENED
[write in a few words what you did before it happened]

MOST LIKELY CAUSE
Search engines treat each address as a page; without a main address chosen, they split attention among copies.

DO THESE STEPS, IN THIS ORDER
1. Choose one main address style and redirect all others to it with one permanent redirect.
2. Add a canonical tag on every page pointing to its main address.
3. Keep the sitemap to main addresses only.
Stop and tell me if what you see does not match a step. Do not skip ahead.

CHECK THAT IT WORKED
- Every variant ends on the main address and the canonical tags match the sitemap.
Tell me exactly what I should see on the screen when it works.

DO NOT CHANGE
- Do not redirect everything to the home page.
- Anything I did not ask about: the design, the text, other pages, other settings or the data.
- Do not delete files, data or branches, do not reset or force-push, and do not rewrite history, unless you first show me exactly what would be lost and I say yes.
- Do not paste, print or ask me to paste a password or secret key into this chat. If one is needed, tell me which settings page of the right service to store it in.

WHEN YOU FINISH
Explain in simple words what you changed (file by file or setting by setting), why you changed it, and how I can undo it.

Paste it into Claude, ChatGPT, Gemini or Cursor, then follow what it says.

After you tried it, did it work?

Steps

Choose one main address style and redirect all others to it with one permanent redirect.
Add a canonical tag on every page pointing to its main address.
Keep the sitemap to main addresses only.

Do not do this

Do not chain several redirects.
Do not redirect everything to the home page.

Try another entry