> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superlink.me/llms.txt
> Use this file to discover all available pages before exploring further.

# For Wallets and Dapps

> Congrats - you’re one step closer to offering best-in-class web3 onboarding.

![free subdomains header](https://assets.superlink.me/images/free-subdomain-explainer.png)

## Implementing free subdomains

Implementing free branded subdomains is simple.

Here’s your guide:

<Steps>
  <Step title="Pick a domain">
    Schedule a call with us where we’ll talk through domain options and select the perfect one for you. For example `yourbrand.id`.
  </Step>

  <Step title="Choose SDK or API implementation">
    SDK solution = plug and play. API lets you design everything.
  </Step>

  <Step title="Implement it">
    An SDK solution can easily fit into your next sprint. API is more up to you. Our velvet glove support will make it easy.
  </Step>
</Steps>

<Check>We know how much you care about the end user experience. We do too. Our last business was a mobile app used by millions of consumers.</Check>

## Explore our Developer Documentation

To learn more about the specifics of implementation, explore our [Subdomain Onboarding Guide](/sdk-reference/client-sdk/integration/free-subdomain-onboarding).

## Frequently Asked Questions

<Note>Web3 domains are simple for the user, but complex behind the scenes. Our job is to make them easy for you.</Note>

#### How can these domains be free?

ENS subdomains are an off-chain solution geared to maximize adoption. You pay for the domain and a small management fee for Superlink to manage your domain and subdomains, and users get them for free.

#### How should I pick a domain?

You can pick any web2 domain that has a DNSSEC-compatible TLD. That includes most web2 domains. We recommend `.id` domains but really any will do. Be sure to include your brand or a shortened version of your brand for maximum brand impact.

#### Are these decentralized domains?

ENS subdomains are less trustless than on-chain premium domains. Subdomain data is not stored on-chain; data is signed with a private key (Superlink's) which is then verified on-chain. That's the trade-off for a free domain. Coinbase has issued more than 4 million of these. They are industry standard.

#### What about subdomain name restrictions?

We have a content moderation function for subdomain claiming, and the character limit for subdomain choice is 30 characters.

#### What data does Superlink collect?

We gather analytics data on SDK/API usage and collect wallet address and subdomain pairs for resolution purposes.