Technical SEO
Bulk WWW Redirect Checker Tool
Ensure your digital properties maintain strict canonical authority. Our bulk validator checks both WWW and non-WWW variants to ensure they consolidate link equity into a single, preferred version, preventing index dilution and crawl budget waste.
This tool checks if the URL correctly redirects to its preferred version (WWW vs non-WWW).
Inputs
- Domain List
- Protocol Selection
Outputs
- Redirect Status
- Final Destination URL
- HTTP Code
Interaction: Paste your domain list into the input area. The tool will sequentially probe each variant, follow all redirect chains, and report the final resolving URL to confirm your canonical setup is technically sound.
How It Works
A transparent look at the logic behind the analysis.
Load Domain List
Enter your domains one per line. The tool handles both naked domains and those with prefixes, ensuring comprehensive coverage for your technical audit.
Probe HTTP Variants
Our system initiates server-side requests to both the WWW and non-WWW versions to detect existing server-level redirection rules and headers.
Trace Redirect Chains
We follow each hop in the redirection path, documenting the HTTP status codes like 301 or 302 to ensure they meet SEO best practices.
Verify Canonical Resolving
The tool identifies the final destination URL and compares it against your input to confirm if the domain correctly resolves to a single version.
Why This Matters
Validate canonical domain versioning in bulk to ensure your website resolves correctly and avoids duplicate content issues across search engines.
Eliminate Duplicate Content
Prevents search engines from indexing two identical versions of your site, which can cause internal competition and ranking fluctuations in search results.
Consolidate Link Equity
Ensures that all external backlinks pointing to different domain variants are funneled into a single canonical target, maximizing your total authority.
Optimize Crawl Budget
By removing redundant URL variants, search bots can focus their limited resources on your unique content, leading to faster indexing of new pages.
Uniform User Experience
Guarantees that users always land on your preferred brand version regardless of how they typed your URL, providing a consistent and professional web experience.
Key Features
Bulk Domain Support
Audit dozens of domains simultaneously, making it an essential tool for agency-side SEOs managing large portfolios or performing site migrations.
Real-Time Detection
Get immediate visual feedback on redirection status using live server-side fetching, ensuring your data is current and not based on outdated caches.
Protocol Awareness
Intelligently handles both HTTP and HTTPS variants to ensure your site is not only canonically correct but also securely resolving for users.
Redirect Chain Analysis
Identify hidden redirect chains that may be slowing down your site or causing issues with how authority is passed between URLs.
Secure Proxy Fetch
Uses a secure backend proxy to perform checks, protecting your local IP and ensuring that you can bypass basic client-side blocks.
Visual Status Reports
Color-coded results highlight successful redirections and potential configuration errors, allowing for rapid identification of issues during technical site audits.
Sample Output
Input Example
Interpretation
This example shows a correctly configured domain. The naked domain (example.com) uses a permanent 301 redirect to the WWW version, while the WWW version resolves directly with a 200 OK status. This technical setup ensures that all search engine authority is concentrated on the WWW version, satisfying the core requirements of canonicalization and preventing duplicate content issues.
Result Output
example.com -> 301 -> https://www.example.com www.example.com -> 200 -> https://www.example.com
Common Use Cases
Pre-Audit Health Check
Run a bulk check at the start of any technical SEO audit to ensure the foundation of the site's domain structure is correctly implemented.
Migration Validation
Verify that domain preferences are preserved after moving to a new server or CMS, ensuring that old redirect rules have been correctly ported over.
Portfolio Consistency
Ensure that all secondary brand domains and vanity URLs are correctly redirecting to the main corporate website using the proper status codes.
Server Config Debugging
Quickly test .htaccess or Nginx configuration changes to confirm that the desired WWW vs non-WWW behavior is working as expected across all environments.
Troubleshooting Guide
Infinite Redirect Loops
If the tool reports a loop error, check your server config for conflicting rules where the WWW version redirects back to the non-WWW version and vice versa.
SSL/TLS Mismatches
Ensure your SSL certificate is valid for both the naked domain and the WWW subdomain, otherwise, the browser may block the redirect with a security warning.
DNS Propagation Delays
If you recently updated your A records or CNAMEs, the tool may still see old data until the DNS changes have fully propagated across global name servers.
Pro Tips
- Always use 301 permanent redirects instead of 302 temporary ones for canonical domain versioning to ensure 100% of link equity is transferred.
- Update your internal links to point directly to the canonical version to reduce the number of server-side redirects and improve page load speed.
- Check your XML sitemaps to ensure they only contain the preferred canonical version of your URLs to prevent search engine crawler confusion.
- Verify your preferred domain in Google Search Console to reinforce the canonical signals you are sending via your server-side redirection rules.
- Use this tool periodically to monitor for changes in server configuration that might accidentally disable your primary redirection logic during updates.
- Ensure your canonical tags in the HTML <head> match the resolving domain version to provide a consistent signal to search engine algorithms.
- When using a CDN like Cloudflare, check their 'Page Rules' or 'Redirects' section to ensure they aren't overriding your origin server's settings.
Frequently Asked Questions
Is WWW or non-WWW better for technical SEO?
In modern SEO, there is no inherent ranking advantage to either version. The critical factor is consistency; you must choose one as your canonical version and redirect all other traffic to it using permanent 301 status codes to avoid duplicate content.
Why does my site resolve to both versions?
If both versions load without redirecting, your server is likely configured to serve content from both hostnames independently. This is a technical error that leads to duplicate content and should be fixed via .htaccess or Nginx configuration rules immediately.
How do I fix a missing WWW redirect on Apache?
You can fix this by adding a specific RewriteRule to your .htaccess file. This rule should check the HTTP_HOST and, if it matches the non-preferred version, perform a 301 redirect to the preferred canonical URL for all incoming requests.
Can redirect chains affect my search rankings?
Yes, long redirect chains can dilute the authority passed between pages and increase latency. For domain versioning, you should aim for a single hop from the non-preferred to the preferred version to maintain optimal performance and SEO health.
Does SSL affect WWW vs non-WWW redirects?
Yes, redirection usually happens after the SSL handshake. If your certificate doesn't cover both versions, users will see a security warning before the redirect occurs. Always use a SAN or Wildcard certificate to ensure a smooth, secure transition between variants.
How often should I check my domain redirects?
You should check your redirects after any server maintenance, CMS update, or DNS change. Regular quarterly audits are also recommended to ensure that no accidental configuration changes have weakened your site's technical SEO foundation over time.