www or Non-www: Which 301 Setup Keeps Your Authority Whole?
Your site can answer to two addresses—with www and without. Pick one, redirect the other, and stop splitting the credit Google gives you. Here's the plain version.
Here's something most business owners never notice. Your website can answer to two addresses at once. One with www in front. One without. Type www.yoursite.com and you get your site. Type yoursite.com and you get it too.
Feels fine, right? It usually looks fine to a visitor. But to Google, those can look like two different sites showing the same pages. And when that happens, the credit your site has earned gets split between the two. That's the problem a www vs non-www 301 redirect for domain authority is meant to fix.
You don't need to be technical to get this right. You just need to make one decision and set one rule.
Why two addresses hurt you
Think of it like a business with two phone numbers that both ring the same desk. Customers call both. Reviews mention both. Over time, some people trust one number and some trust the other. Now imagine you're trying to prove how busy that desk is, but your call records are split across two lines. Neither number tells the full story.
Google works a little like that. When links point at your site, that's a vote of confidence. Some people might link to www.yoursite.com. Others link to yoursite.com. If both versions load on their own, those votes get divided. Neither version looks as strong as your site really is.
A 301 redirect is how you merge the two. It's a permanent forwarding rule. It tells every browser and every search engine, "This address moved for good—send everyone to the other one." Pick one version as your real address, point the other one at it, and the credit stops splitting.
www or non-www—does it matter which?
For ranking, no. Google has said for years that neither one is better. There's no bonus for keeping www and no penalty for dropping it. Pick the one you like and stick with it.
What matters is that you choose one and only one. Here's how to decide:
- Shorter is easier to say. "Go to yoursite dot com" beats "double-you double-you double-you." If you read your address out loud on the phone or a truck, non-www is cleaner.
- Check what you already use. If your business cards, signs, and Google listing all say www, switching means updating a lot of things. Sometimes the version you already have is the version worth keeping.
- Ask your host. A few older setups run better with www for technical reasons. Your web host can tell you in a minute if that applies to you.
Once you pick, the other version should always forward to it. Not sometimes. Always.
How to check what your site does now
You can test this yourself in under a minute. Open your browser and type your address with www. See where it lands. Then type it without www. See where that lands.
- If both end up at the same address, good—someone set the redirect.
- If each one stays put and shows www for one and no www for the other, you've got the split. That's the thing to fix.
Look at the address bar after each page loads, not what you typed. The bar shows you where you actually ended up.
Setting it up the right way
The fix usually lives in one of two places: your domain settings or your website platform. Most platforms—the ones that build and host your site—have a simple setting for this. Look for wording like "primary domain," "preferred domain," or "redirect www." Turn it on, choose your version, and you're done.
Two things to get right while you're in there:
- Use a permanent redirect, not a temporary one. The permanent kind (a 301) passes your earned credit along. The temporary kind holds it back. If you can choose, choose permanent. We break the difference down in 301 vs 302 redirects: which one protects domain authority.
- Send it straight there in one hop. You don't want www bouncing to a third address that then bounces again. Each extra jump wastes a little of what you're trying to protect. See redirect chains and loops: how they quietly leak domain authority for what that looks like.
If your setup is on a moving-day scale—say you're switching to a better name entirely—the steps are a bit more involved. Our guide on how to 301 redirect an old domain to preserve its authority walks through that. This post is about the smaller, everyday version: two spellings of the same name.
A few things people get wrong
The most common mistake is thinking it doesn't matter because the site "works either way." It works for visitors. It quietly costs you with search engines. Fixing it is free and takes minutes.
The second is forgetting to update where your address is written down. If your Google Business Profile, your invoices, and your ads all point at the version you're forwarding away from, every click takes an extra hop before it lands. Update them to your chosen version so they land direct. For more of these, see 7 common 301 redirect mistakes that kill domain authority.
If you want the official word from Google on why picking one version matters, their help page on choosing a canonical URL lays it out plainly.
This is one of those small settings that quietly earns its keep. You set it once and forget it. Your site stops splitting its own reputation, and every link you earn from here on counts once, fully.
Not sure your current name is worth keeping in the first place? That's a fair question to ask before you fuss with redirects. Browse names for your city and trade, or ask us about one specific domain you have in mind. It takes about a minute, and there's no pressure either way.
