A channel may use several connected domains. Articles, translations, comments and settings remain one shared publication; domains only change how readers enter and navigate it.

Primary domain, aliases and mirrors

The primary domain is the main address. An alias redirects visitors to the primary or language-canonical domain. A mirror serves the same channel directly and keeps its own domain in channel, article, RSS, JSON and Markdown links.

Set up a multilingual knowledge base

Connect all required domains, choose one primary domain, switch the additional addresses to Mirror, and select the default language for each domain. Publish every article only once and add translations to that same article.

Portable links between articles

For a table of contents and links back from articles, use an explicit relative link such as ./article-slug. The browser resolves it on the current domain, so a reader who entered through one mirror stays on that mirror. A leading slash points to the domain root; a plain article-slug without ./ may be interpreted as an external web address by the editor.

Languages and search indexing

Selection order: an explicit lang in the link, reading language, domain fallback, article default, channel default, then the first available published translation in language-code order. Unavailable translations are skipped. Each published language has one canonical domain; hreflang connects language versions, and each mirror sitemap contains only canonical URLs assigned to that host. Add every mirror as a separate property in Google Search Console when you need its search reports.

Readers and analytics

Reader sign-in, comments, reactions, favorites and subscriptions work on the primary domain and active mirrors. They use the same Publicasta account and shared records. Analytics retain the requested host, so traffic from each mirror can be compared without duplicating content.

Homepage visibility

Homepage visibility is available on all plans. It affects only the Publicasta homepage, not privacy, search, related articles, or subscriptions.

In the channel editor, the homepage checkbox is in the SEO section. In the article and translation editors, choose homepage visibility in Settings.

The channel setting is enabled by default. Disable it to keep a knowledge base off the homepage while its published articles remain accessible through the channel and direct links, including custom domains and mirrors.

Use channel setting follows the channel choice. Allow on homepage permits visibility even when the channel setting is disabled. Hide from homepage always hides the article from the homepage.

An administrator's homepage exclusion cannot be overridden. Content requirements still apply to each translation. The primary article and all translations share one homepage setting.

Article and channel contents

In article Settings, enable Show article contents. Add at least two H2 headings; H3 headings become subitems. The setting is shared by translations, but each language uses its own headings.

Section links work even with contents disabled. Use # beside a public heading to copy its link, or Link to section in the editor. Renaming a heading preserves its link; deleting and recreating it may create a new link. API clients replacing HTML must preserve heading id attributes.

For a guide, publish an index article with links such as ./getting_started, then pin it. In channel SEO settings, enable Use the pinned article as channel contents and check the preview. H2/H3 headings group the links. Link labels and order are preserved. Only published articles from the same channel appear; external links, duplicates and the index itself are excluded. Publish changes to the index to update the menu.

Contents start above the article. After scrolling past them, navigation appears beside the text on wide screens or as an expandable bar on narrow screens. The current section is highlighted. When both menus exist, switch between In this article and Guide sections. Guide links keep the current domain and use the reader’s language unless the source link specifies one. These settings do not publish articles or change homepage visibility.

Reader preferences are stored only in this browser for the current domain. On wide screens, use the arrow in the floating menu to move it left or right. Collapsing or expanding the contents above an article becomes the default for other articles; floating navigation keeps its own behavior.

The homepage first selects the translation using your reading preferences, then checks whether that version is eligible for the homepage. If it lacks an image or fails another eligibility requirement, the article is hidden from your homepage rather than shown in another language. It remains available in the channel and through its direct link.