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GitHub Username Checker — Check Up to 5 Handles at Once

Enter up to 5 usernames or organization names (one per line). Spaces and invalid characters are removed automatically. Your profile will be at github.com/username.

Min length: 1 character Max length: 39 characters Allowed: letters, numbers, hyphens (-) Format: github.com/username

GitHub Usernames (up to 5, one per line)

One username per line. Spaces become hyphens. Only letters, numbers and hyphens are kept. No leading or trailing hyphens. Max 5 per check.

💡 Show username suggestions

What is a GitHub username?

Your GitHub username is the unique identifier that forms your public profile URL: github.com/yourusername. It appears on every repository you create, every commit you make, every issue you open, and every pull request you submit. If you create a GitHub Pages site, your free subdomain is also based on your username: yourusername.github.io.

GitHub is the world's largest code hosting platform with over 100 million developers. Profile pages, repositories, and GitHub Pages sites rank consistently on Google for developer names, project names, and technical search queries. For developers, open source maintainers, and tech brands, a strong GitHub username is one of the most important handles to secure early. GitHub Pages in particular is widely used for parasite SEO because the github.io domain carries very high authority.

GitHub username rules

→ Length: Between 1 and 39 characters.
→ Allowed characters: Letters (a-z, A-Z), numbers (0-9), and hyphens (-). Underscores, dots, and spaces are not permitted.
→ Hyphens: Hyphens are allowed in the middle of the username but not at the start or end. Consecutive hyphens (e.g. my--brand) are also not permitted.
→ Case: Usernames are case-insensitive. MyBrand and mybrand cannot both exist as separate accounts.
→ Changes: GitHub allows username changes from your account settings. However, changing your username breaks all existing links to your repositories, profile, and GitHub Pages site unless GitHub sets up redirects (which it does temporarily for some cases but not permanently).
→ Organizations: GitHub organizations use the same username namespace as personal accounts. An organization name like mybrand blocks a personal account from using the same name, and vice versa.

Tips for choosing a GitHub username

Use the same handle you use on other developer platforms

Consistency across GitHub, Dev.to, Hashnode, and npm makes it easy for other developers and potential employers to find all your work under one recognizable name. The developer community relies on handle consistency to attribute contributions correctly.

Keep it professional and timeless

Your GitHub username appears in every commit you ever make. If your repositories are public, those commits are permanently indexed. A professional username that does not include numbers, jokes, or temporary references will serve you better over a long career.

Plan for GitHub Pages at the same time

When you register a GitHub account, you automatically get the subdomain yourusername.github.io for free. This subdomain carries significant SEO authority and is widely used by developers for portfolios, documentation sites, and content that needs to rank quickly.

Consider an organization account for your brand

GitHub Organizations are free for open source projects. If you are building a developer tool or open source product, registering the organization name (e.g. github.com/mybrand as an org) alongside your personal account is good brand protection.

Avoid changing your username once you start committing

Every commit in every repository is permanently tied to your username in the Git history. Changing your username breaks attribution in forks and clones that predate the change. If your repositories are used by others, a username change can cause confusion and broken package references.

Why GitHub matters for SEO and developer branding

GitHub has one of the highest domain authority scores of any site on the internet. Repositories, profile pages, and GitHub Pages sites are indexed quickly and rank well for technical queries. For developers and tech companies, GitHub is not just a code hosting platform: it is a public portfolio, a reputation signal, and a high-authority content platform rolled into one.

GitHub Pages for parasite SEO

The github.io subdomain carries extremely high authority. Content published on GitHub Pages can rank on the first page of Google for competitive keywords faster than most independent sites.

Repository README content ranks

GitHub repository README files are indexed and ranked by Google. Well-written README files for popular repositories appear in search results for the project name, the technology stack, and related how-to queries.

Developer trust signal

A GitHub profile with consistent activity, quality repositories, and a professional username is a strong trust signal for potential clients, employers, and open source collaborators. Many hiring processes now start with a GitHub profile review.

Backlink source

Links from GitHub repositories and GitHub Pages to your own domain pass real SEO value. Projects with stars and forks generate organic backlinks as other developers reference and build on your work.

GitHub Pages: the free high-authority subdomain every brand should claim

Every GitHub account automatically comes with a free username.github.io subdomain for hosting static websites at no cost. This subdomain is part of the github.io domain, which carries domain authority comparable to some of the most trusted sites on the internet.

Content marketers and SEO practitioners use GitHub Pages to publish landing pages, documentation sites, and long-form content that ranks for competitive keywords without requiring years of domain authority building. A simple static page on mybrand.github.io can outrank pages on independent domains that have been live for years.

To use GitHub Pages, you create a repository named username.github.io and push HTML or Markdown files to it. GitHub automatically serves the content as a public website. You can also connect a custom domain to your GitHub Pages site if you want to use your own brand domain instead of the github.io subdomain.

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 usernames at once, giving you 25 GitHub handle checks per day in total.

How accurate are the results?

Very accurate. GitHub username availability is verified directly and definitively. A result of "Available" means no account with that name exists, covering both personal accounts and organizations (which share the same namespace). An "Unknown" result is rare and means the check could not be completed, usually due to a temporary network issue.

Can I change my GitHub username?

Yes. GitHub allows username changes from your account settings under Profile. GitHub sets up redirects for your old profile URL and repositories for a period, but these redirects are not permanent. Forks, clones, and package references using your old username will break over time. Commit history in cloned repositories will still show the old username. Avoid changing your username once you have public repositories with significant usage.

Does using this tool affect my own GitHub account?

No. This tool checks username availability without using your GitHub account in any way. Results are cached to minimize repeated lookups for the same username.

Can I use the same username for a GitHub Organization as my personal account?

No. GitHub personal accounts and organization accounts share the same username namespace. If mybrand is registered as a personal account, no organization can use that name, and vice versa. If you want both a personal account and a brand organization, you need different names for each.

What if my preferred username is taken?

Use the suggestion toggle above to generate hyphenated variations. Common alternatives include adding -hq, -official, or -dev as suffixes. Note that GitHub does not allow underscores, so all suggestions use hyphens as separators.

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