#Does the "site" config option in astro.config.mjs require a trailing slash?

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zenith flicker
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Does the "site" config option in astro.config.mjs require a trailing slash?

crisp patrolBOT
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Hi @zenith flicker. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

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No, the "site" config option in astro.config.mjs does not require a trailing slash. In Astro v1.x, Astro ensured the URL you set as site in astro.config.mjs always had a trailing slash when accessed using Astro.site. However, Astro v2.0 no longer modifies the value of site. Astro.site will use the exact value defined, and a trailing slash must be specified if desired.

Here is an example of how you can add a trailing slash to the URL set in site:

import { defineConfig } from 'astro/config';
export default defineConfig({ site: '<https://example.com/',}>);

You can find more information about this in the Astro documentation (https://docs.astro.build/en/guides/upgrade-to/v2#changed-astrosite-trailing-slash).

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zenith flicker
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@crisp patrol If you say "a trailing slash must be specified if desired" - when would a trailing slash be or not be desired?

crisp patrolBOT
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Let me check the knowledge base for you. One moment! :books:

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The decision to use a trailing slash in URLs often depends on the developer's preference or the specific requirements of a project. Here are a few considerations:

  1. Consistency: It's important to be consistent with the use of trailing slashes throughout your website. Having both versions of a URL (with and without trailing slash) can lead to duplicate content issues, which can negatively impact SEO.

  2. Relative URLs: If you're using relative URLs, a trailing slash can change the URL's behavior. For example, if you're on <https://example.com/page> and you link to another-page (a relative URL), the new URL will be <https://example.com/another-page.> But if you're on <https://example.com/page/> (note the trailing slash) and you link to another-page, the new URL will be <https://example.com/page/another-page.>

  3. Server Configuration: Some servers are configured to automatically redirect URLs to their trailing slash or non-trailing slash version. You might want to follow the server's default behavior to avoid unnecessary redirects.

In the context of Astro, the trailingSlash and build.format options in the Astro configuration can control the trailing slash behavior in your URLs. You can find more information about these options in the Astro documentation (https://docs.astro.build/en/reference/configuration-reference/#trailingslash) and the GitHub issues (https://github.com/withastro/astro/issues/4638) discussing this topic.

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