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Webflow Subdomain Checker — Check Up to 5 Site Names at Once

Enter up to 5 site names (one per line). Spaces become hyphens. Your site will be at yourname.webflow.io.

Min length: 2 characters Max length: 63 characters Allowed: lowercase letters, numbers, hyphens (-) Format: yourname.webflow.io

Webflow Site Names (up to 5, one per line)

One name per line. Spaces become hyphens. Only lowercase letters, numbers and hyphens are kept. Max 5 per check.

💡 Show name suggestions

What is a Webflow subdomain?

Every site built and published on Webflow gets a free staging subdomain at yourname.webflow.io. This subdomain is set when you name your project and becomes the live public address for your site as long as it remains on Webflow's hosting. You can share it with clients for review, use it as a permanent address, or connect a custom domain when you are ready.

Webflow is a professional visual website builder and hosting platform used by designers, agencies, and marketing teams worldwide. Sites published on Webflow are served on a fast global CDN with automatic HTTPS. The webflow.io domain carries strong authority, which makes Webflow subdomains a popular choice for parasite SEO, client review links, and long-term landing pages where purchasing a custom domain is not a priority.

Webflow subdomain rules

→ Length: Between 2 and 63 characters (the DNS label limit).
→ Allowed characters: Lowercase letters (a-z), numbers (0-9), and hyphens (-). No underscores, dots, spaces, or uppercase letters.
→ Start and end: Must start and end with a letter or number. Hyphens at the beginning or end of a subdomain are not valid.
→ Project name = subdomain: The subdomain is determined by your Webflow project name. Changing the project name changes the subdomain and releases the old one.
→ Staging vs production: On free Webflow plans, the webflow.io subdomain is your only publishing option. Paid plans allow you to connect a custom domain while keeping the subdomain active as a staging environment.
→ Changes: Renaming your Webflow project changes the subdomain. The old subdomain becomes available for others to claim immediately. Any existing links using the old subdomain will break.

Tips for choosing a Webflow subdomain

Use your project or client name for clarity

When sharing a Webflow site with a client for review, the subdomain is the first thing they see in the URL bar. A name like acme-rebrand.webflow.io is immediately recognizable, while a generic or random name creates confusion about which project they are reviewing.

For parasite SEO: include the target keyword

If you are building a Webflow site specifically to rank for a keyword, the subdomain contributes to URL relevance. A name like best-crm-software.webflow.io signals topic relevance in the URL itself, which is a lightweight but real SEO signal.

Claim your brand name before launching any public campaign

Webflow subdomains are first-come, first-served. If you are planning to use a Webflow site as part of a marketing campaign or product launch, check and claim the subdomain before announcing the URL publicly. A competitor or squatter could claim it once the name is known.

Keep it short if you plan to share the URL verbally or in print

A short Webflow subdomain is easier to read in a slide deck, easier to say in a presentation, and easier to type when someone wants to revisit the site. Aim for under 20 characters whenever possible.

Think about whether you will ever need a Netlify or Cloudflare Pages alternative

Webflow is a design-first platform, while Netlify and Cloudflare Pages are code-first. For the same project name, it is worth checking availability on all three platforms so you retain the option to migrate or run parallel sites. Use our Netlify checker and Cloudflare Pages checker to verify all at once.

Why Webflow is powerful for designers, marketers, and SEO

Webflow occupies a unique position in the web platform landscape: it gives designers full visual control over layouts, interactions, and animations without writing code, while producing clean semantic HTML that search engines can read and index efficiently. Sites built on Webflow tend to have strong Core Web Vitals scores out of the box, which is a direct ranking factor in Google's search algorithm.

Clean semantic HTML output

Webflow generates well-structured HTML with proper heading hierarchy, semantic tags, and clean markup. This makes Webflow sites easier for Google to crawl and understand than sites built with drag-and-drop builders that produce bloated, non-semantic code.

Global CDN with automatic HTTPS

Every Webflow site is served from a global CDN powered by Fastly, with SSL certificates provisioned automatically. Fast page load times from everywhere in the world contribute directly to Core Web Vitals scores and user experience.

Built-in SEO controls

Webflow gives designers direct control over meta titles, meta descriptions, Open Graph tags, canonical URLs, and structured data, all without plugins. These controls are available per-page and can be templated across CMS collections.

webflow.io domain authority

The webflow.io domain has strong authority built over years. Content published on Webflow subdomains can rank for competitive keywords faster than brand-new independent domains, making it a viable parasite SEO platform.

Webflow vs Squarespace vs Wix: which visual builder is right for you?

Webflow, Squarespace, and Wix are the three most popular visual website builders, but they target different users. Webflow has the steepest learning curve but the most design freedom and the best SEO output. It is the preferred choice for professional designers and agencies who need pixel-perfect control over every element and interaction.

Squarespace is better for users who want a beautiful site quickly with minimal design decisions. Its templates are polished and its interface is simpler, but customization is more constrained than Webflow. Wix sits between the two: more flexible than Squarespace but less powerful than Webflow, and historically has had weaker SEO output than either alternative.

For SEO-focused sites, content-heavy marketing sites, or any project where a designer needs precise control, Webflow is generally the strongest choice among the three. For simple portfolio sites or small business pages where speed of setup matters more than design flexibility, Squarespace is a practical alternative.

Frequently asked questions

Is this checker free to use?

Yes. You can run up to 5 checks per day at no cost. Each check can include up to 5 site names at once, giving you 25 Webflow subdomain checks per day in total.

How accurate are the results?

Very accurate. Webflow returns standard HTTP status codes for registered and unregistered subdomains. A result of "Available" means no site was found at that subdomain address. A result of "Taken" means an active Webflow project is published at that address. A result of "Unknown" means the check could not be completed and you should verify by visiting the URL directly.

How do I claim a Webflow subdomain?

Create a free Webflow account, start a new project, and name it with your preferred subdomain during setup. Once you publish the project, the subdomain is live and registered to your account. You can rename the project later from project settings, but the old subdomain will be released immediately when you do.

Can I use a Webflow subdomain permanently without a custom domain?

Yes. The webflow.io subdomain is a fully functional public URL that you can use permanently. Many designers use it for portfolio sites, client demos, and content projects without ever connecting a custom domain. There is no time limit on how long a free Webflow site can be published at its subdomain.

Is Webflow free?

Webflow has a free Starter plan that lets you build and publish up to 2 sites on webflow.io subdomains with Webflow branding in the footer. Paid plans (Basic, CMS, Business, and Enterprise) remove the branding, allow custom domains, increase site limits, and unlock the CMS, eCommerce, and membership features.

What if my preferred subdomain is taken?

Use the suggestion toggle above to generate variations. Common alternatives include adding -site, -hq, -web, or -official as a suffix. For parasite SEO use cases, keyword-based names that were not your first choice may actually rank better than a branded name anyway.

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