},
        )
          .into_response(),
      ),
      Media::Font => Ok(
        (
          [(
            header::CONTENT_SECURITY_POLICY,
            "script-src-elem 'self'; style-src 'self' 'unsafe-inline';",
          )],
          PreviewFontHtml { inscription_id },
        )
          .into_response(),
      ),
      Media::Iframe => Ok(
        Self::content_response(inscription, accept_encoding, &page_config)?
          .ok_or_not_found(|| format!("inscription {inscription_id} content"))?
          .into_response(),
      ),
      Media::Image => Ok(
        (
          [(
            header::CONTENT_SECURITY_POLICY,
            "default-src 'self' 'unsafe-inline'",
          )],
          PreviewImageHtml { inscription_id },
        )
          .into_response(),
      ),
      Media::Markdown => Ok(
        (
          [(
            header::CONTENT_SECURITY_POLICY,
            "script-src-elem 'self' https://cdn.jsdelivr.net",
          )],
          PreviewMarkdownHtml { inscription_id },