Raw HTML vs JS render, continuous

The SEO monitoring that compares what Google indexes with what your browser shows

Seogard continuously watches the raw HTML (SSR) against the JavaScript render. When a deploy breaks your metas, canonicals or noindex server-side, you know the same day — not three weeks after traffic drops.

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What your SEO monitoring watches

  • Raw HTML vs JavaScript render

    The continuous SSR/CSR comparison that catches invisible regressions when SSR breaks but the browser still renders everything fine.

  • Metas, canonicals, noindex, status codes

    The critical indexing elements, checked on every crawl. A meta that disappears or a noindex added by mistake? Instant alert.

  • Instant alerts

    Email the moment a regression appears or gets fixed. Event-driven channel: we only notify you when something changes.

  • CI/CD gate

    Block a regressive deploy before it hits production, with three strictness levels per zone.

  • AI visibility (GEO)

    llms.txt, ChatGPT/Perplexity crawlers, FAQ and structured data: we also watch what generative engines see on your site.

  • Multi-zone

    Different rules per site section: monitor your critical pages (checkout, categories) more strictly than the rest.

How it works

  1. 1You add your site: Seogard discovers your pages and establishes a baseline.
  2. 2On every crawl, it diffs the raw HTML against the JavaScript render and checks every page against its baseline.
  3. 3A regression shows up? You get an alert and a report — before Google re-indexes.

Monitor your SEO continuously

Self-hosted, free forever. Or Cloud from $0.01/page/month — 14-day trial, no credit card.

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Seogard is source-available software (BSL 1.1 license) published by SAVEPNP SAS. Code distributed under the terms of the BSL — all other rights reserved.

Our mission is to protect every indexed page from invisible SEO regressions — before Google finds them.
Goal: 10,000 monitored sites by 2028.

Need help? [email protected]

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Frequently asked questions

What exactly does Seogard monitor?

Seogard continuously monitors 71 SEO and GEO rules on every page: meta title and description, canonical, accidental noindex, status codes (404, 500, redirects), SSR/CSR regressions, hreflang, Open Graph, llms.txt, blocked AI citation crawlers (OAI-SearchBot, PerplexityBot, Claude-SearchBot) and much more. Every regression triggers a real-time email alert, ranked by severity.

Is Seogard free?

The self-hosted version is free, source available (BSL 1.1 license), with no page limit. The Cloud version is usage-based, for teams that prefer not to run the infrastructure.

How is Seogard different from a classic crawler?

Seogard automatically and continuously compares the raw HTML (what Google indexes) with the JavaScript render (what you see), on every page. Broken SSR goes unnoticed in the browser — Seogard catches it before Google re-renders your pages.

How do alerts work?

Every page is crawled daily. As soon as a change is detected (modified meta, abnormal status code, broken SSR), an alert with the before/after diff is sent by email.

Links

FeaturesCoursesMonitoringAuditFree SSR checkerPricingDocsBot / Crawlerllms.txt

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