$ headless-seo-check http://127.0.0.1:4311 -a --json
--- stdout+stderr ---
headless-seo-check: checking http://127.0.0.1:4311 …
headless-seo-check: 23 URLs pointed at another host, checked on 127.0.0.1:4311 instead
headless-seo-check: 23 of 23 URLs selected, from http://127.0.0.1:4311/sitemap.xml
{
  "tool": "headless-seo-check",
  "version": "0.1.0",
  "checked_at_unix": 1786210243,
  "interrupted": false,
  "notes": [],
  "fatal": null,
  "site": "http://127.0.0.1:4311",
  "discovery": {
    "source": "http://127.0.0.1:4311/sitemap.xml",
    "total": 23,
    "checked": 23,
    "rebased": "23 URLs pointed at another host, checked on 127.0.0.1:4311 instead"
  },
  "pages": [
    {
      "url": "http://127.0.0.1:4311/",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 324,
      "internal_links": 17,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/static",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 2,
      "render_mode": "static",
      "words": 325,
      "internal_links": 17,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/force-dynamic",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 3,
      "render_mode": "dynamic",
      "words": 323,
      "internal_links": 17,
      "findings": [
        {
          "kind": "dynamic-render",
          "severity": "error",
          "message": "rendered on every request, never cached at the edge",
          "detail": [
            "cache-control: private, no-cache, no-store, max-age=0, must-revalidate"
          ]
        },
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/isr",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 2,
      "render_mode": "static",
      "words": 324,
      "internal_links": 17,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/noindex-meta",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 3,
      "render_mode": "static",
      "words": 324,
      "internal_links": 17,
      "findings": [
        {
          "kind": "noindex-meta",
          "severity": "warn",
          "message": "<meta robots> says noindex, yet this URL is offered for crawling",
          "detail": [
            "<meta robots content=\"noindex, nofollow\">"
          ]
        },
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/noindex-header",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 1,
      "render_mode": "static",
      "words": 326,
      "internal_links": 17,
      "findings": [
        {
          "kind": "noindex-header",
          "severity": "error",
          "message": "blocked from indexing by a response header that does not appear in the page source",
          "detail": [
            "X-Robots-Tag: noindex, nofollow"
          ]
        },
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/noindex-conflict",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 1,
      "render_mode": "static",
      "words": 325,
      "internal_links": 17,
      "findings": [
        {
          "kind": "noindex-header",
          "severity": "error",
          "message": "blocked from indexing by a response header that does not appear in the page source",
          "detail": [
            "X-Robots-Tag: noindex, nofollow"
          ]
        },
        {
          "kind": "indexability-conflict",
          "severity": "error",
          "message": "the header and the HTML disagree about indexing, and the header is the one that counts",
          "detail": [
            "X-Robots-Tag: noindex, nofollow",
            "<meta name=\"robots\" content=\"index, follow\">"
          ]
        },
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/canonical-self",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 1,
      "render_mode": "static",
      "words": 324,
      "internal_links": 17,
      "findings": []
    },
    {
      "url": "http://127.0.0.1:4311/canonical-other",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 327,
      "internal_links": 17,
      "findings": [
        {
          "kind": "canonical-elsewhere",
          "severity": "info",
          "message": "canonical points at another page",
          "detail": [
            "http://127.0.0.1:4311/static"
          ]
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/hreflang-good",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 324,
      "internal_links": 17,
      "findings": []
    },
    {
      "url": "http://127.0.0.1:4311/hreflang-drift",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 324,
      "internal_links": 17,
      "findings": [
        {
          "kind": "hreflang-drift",
          "severity": "error",
          "message": "the Link: header and the HTML advertise different URLs for 1 language",
          "detail": [
            "fr  header: http://127.0.0.1:4311/fr/hreflang-drift",
            "fr  HTML:   http://127.0.0.1:4311/fr/slug-traduit",
            "fr  the header target answers HTTP 200"
          ]
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/hreflang-dead",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 327,
      "internal_links": 17,
      "findings": []
    },
    {
      "url": "http://127.0.0.1:4311/hreflang-drift-dead",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 327,
      "internal_links": 17,
      "findings": [
        {
          "kind": "hreflang-drift",
          "severity": "error",
          "message": "the Link: header and the HTML advertise different URLs for 1 language",
          "detail": [
            "fr  header: http://127.0.0.1:4311/fr/nexiste-pas",
            "fr  HTML:   http://127.0.0.1:4311/fr/slug-traduit",
            "fr  the header target does not exist (HTTP 404)"
          ]
        },
        {
          "kind": "hreflang-dead-target",
          "severity": "error",
          "message": "1 hreflang target in the Link: header do not exist",
          "detail": [
            "fr  http://127.0.0.1:4311/fr/nexiste-pas — does not exist (HTTP 404)"
          ]
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/hreflang-html-only",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 325,
      "internal_links": 17,
      "findings": []
    },
    {
      "url": "http://127.0.0.1:4311/shell",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 0,
      "internal_links": 0,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        },
        {
          "kind": "empty-server-html",
          "severity": "error",
          "message": "the served HTML carries 0 words — Googlebot has to run JavaScript to see this page",
          "detail": [
            "7 <script src> + 3 KB inline JS + an empty root container"
          ]
        },
        {
          "kind": "no-internal-links",
          "severity": "warn",
          "message": "no links to any other page on this host — the navigation is not in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/cjk",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 268,
      "internal_links": 17,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/cjk-thin",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 1,
      "render_mode": "static",
      "words": 39,
      "internal_links": 0,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        },
        {
          "kind": "empty-server-html",
          "severity": "error",
          "message": "the served HTML carries 39 words — Googlebot has to run JavaScript to see this page",
          "detail": [
            "6 <script src> + 3 KB inline JS"
          ]
        },
        {
          "kind": "no-internal-links",
          "severity": "warn",
          "message": "no links to any other page on this host — the navigation is not in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/thin",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 117,
      "internal_links": 1,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        },
        {
          "kind": "thin-server-html",
          "severity": "warn",
          "message": "the served HTML carries 117 words for a page that ships an application bundle",
          "detail": [
            "6 <script src> + 4 KB inline JS"
          ]
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/fr/slug-traduit",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 307,
      "internal_links": 1,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/fr/hreflang-drift",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 0,
      "render_mode": "static",
      "words": 310,
      "internal_links": 1,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/fr/hreflang-good",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 1,
      "render_mode": "static",
      "words": 308,
      "internal_links": 1,
      "findings": [
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/gone",
      "outcome": "http-error",
      "status": 404,
      "ttfb_ms": 0,
      "findings": [
        {
          "kind": "sitemap-url-error",
          "severity": "error",
          "message": "HTTP 404 — in your sitemap, but not on your site"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4311/redirected-old",
      "outcome": "redirect",
      "status": 308,
      "ttfb_ms": 0,
      "redirects_to": "http://127.0.0.1:4311/static",
      "findings": [
        {
          "kind": "sitemap-url-redirect",
          "severity": "info",
          "message": "HTTP 308 — redirects to http://127.0.0.1:4311/static"
        }
      ]
    }
  ],
  "summary": {
    "checked": 21,
    "dynamic": 1,
    "unclear": 0,
    "noindex_header": 2,
    "hreflang_drift": 2,
    "hreflang_dead_target": 1,
    "empty_html": 2,
    "sitemap_errors": 1,
    "unreachable": 0,
    "blocking": 10
  },
  "warnings": 18,
  "exit_code": 1
}
--- exit code: 1 ---