> ## Documentation Index > Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Customization > Set your Help Center's domain, logo, colors, and layout. Tailor your Help Center to reflect your brand, from your domain and logo to your brand colors and analytics scripts. All customizations settings live under Help Center in your Plain workspace. ## Domains By default, every new Help Center is assigned to a free `support.site` subdomain. You can claim yours or set up a fully custom domain under **Help Center → Domains.** * `support.site` **subdomain**: Claim `yourcompany.support.site` at no extra cost, available immediately * **Custom domain**: Point your own domain (e.g. `help.yourcompany.com`) to your Help Center by adding a CNAME record. SSL is handled automatically once the record propagates. ## Branding Configure your Help Center's visual identity under **Help Center → Appearance**: * **Primary brand color**: Plain generates a full color palette from this, applied across buttons, links, and interactive elements * **Logo**: Shown in the header of every Help Center page * **Favicon**: The small icon shown in browser tabs * **AI agent avatar**: The avatar shown when Ask AI responds to customers * **Social preview image**: The image shown when your Help Center URL is shared on social media or in messaging apps You can also set your Help Center's public-facing name under **Help Center → General**. This is separate from the internal name only your team sees. ## Article copy button Under **Help Center → Appearance**, you can enable a copy button that appears on all article pages. Once enabled, you can configure exactly what it offers: * **Copy actions**: Choose which formats customers can copy the article in: plain text or Markdown * **AI handoff actions**: Let customers open the current article as context directly in ChatGPT, Claude, or Cursor ## Custom scripts To add analytics or other third-party scripts to your Help Center, go to **Help Center → General** and find the **Custom code** section. You can inject scripts into both the `` and `` of every page. Common uses include: * Analytics (Google Analytics, Google Tag Manager, Segment) * A/B testing tools * Custom event tracking