Web Validator by DigestSEO

listing.about

Validates HTML and CSS, checks on-page SEO and accessibility signals, parses JSON-LD for syntax errors and checks public links. It can audit one live public page, run a bounded sitemap-first audit of up to eight same-origin pages per call, or work on markup pasted into the conversation. All tools are read-only.

The hosted endpoint uses Streamable HTTP and needs no sign-in or API key. HTML validation sends markup to the Nu HTML Checker at validator.nu; CSS, SEO and JSON-LD checks run on the server. A local npm package (mcp-web-validator) also exists for stdio clients, with file validation and screenshots. Only submit pages you own or may inspect.

listing.can

• Validate raw HTML through the Nu HTML Checker
• Parse CSS and report syntax errors
• Audit titles, meta tags, headings, alt text and Open Graph data
• Check JSON-LD blocks for JSON syntax errors
• Check up to 20 public links found in supplied HTML
• Audit one live public webpage by URL
• Run a sitemap-first audit of up to 8 pages per call
• Generate a combined validation report for supplied markup

listing.tools 8

• validate_htmllisting.hint.ro

  Send supplied HTML to the Nu HTML Checker and return validation messages.

• validate_csslisting.hint.ro

  Parse supplied CSS locally and return syntax messages.

• audit_seo_metadatalisting.hint.ro

  Check supplied HTML for SEO and accessibility signals without fetching a page.

• validate_schema_markuplisting.hint.ro

  Check JSON-LD blocks in supplied HTML for JSON syntax errors.

• check_broken_linkslisting.hint.ro

  Check up to 20 public HTTP(S) links found in supplied HTML.

• generate_validation_reportlisting.hint.ro

  Combine HTML, CSS, SEO, accessibility and JSON-LD checks for supplied markup.

• audit_public_webpagelisting.hint.ro

  Fetch one public page and run HTML, SEO and JSON-LD checks on it.

• audit_public_sitelisting.hint.ro

  Audit up to 8 same-origin sitemap pages per call, respecting robots.txt.

listing.prov.live_on listing.prov.hints

listing.prompts

• Validate this HTML snippet and list the errors.

• Audit https://example.com for SEO and accessibility issues.

• Run a sitemap-based audit of my site and summarize the findings.

• Check the JSON-LD in this page markup for syntax errors.

listing.setup.h

listing.setup.remote

claude mcp add --transport http web-validator-by-digestseo https://web-validator-mcp.digestseo.com/mcp

https://web-validator-mcp.digestseo.com/mcp

{
  "mcpServers": {
    "web-validator-by-digestseo": {
      "url": "https://web-validator-mcp.digestseo.com/mcp"
    }
  }
}

code --add-mcp '{"name":"web-validator-by-digestseo","type":"http","url":"https://web-validator-mcp.digestseo.com/mcp"}'

{
  "servers": {
    "web-validator-by-digestseo": {
      "type": "http",
      "url": "https://web-validator-mcp.digestseo.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "web-validator-by-digestseo": {
      "serverUrl": "https://web-validator-mcp.digestseo.com/mcp"
    }
  }
}

codex mcp add web-validator-by-digestseo --url https://web-validator-mcp.digestseo.com/mcp

[mcp_servers.web-validator-by-digestseo]
url = "https://web-validator-mcp.digestseo.com/mcp"

gemini mcp add --transport http web-validator-by-digestseo https://web-validator-mcp.digestseo.com/mcp

{
  "mcpServers": {
    "web-validator-by-digestseo": {
      "type": "http",
      "url": "https://web-validator-mcp.digestseo.com/mcp"
    }
  }
}

listing.faq

listing.em.h

listing.em.lead listing.em.how

listing.em.badge listing.em.widget iframe JSON

listing.em.badge

Markdown

[![Web Validator by DigestSEO on mcp.tc](https://mcp.tc/i/web-validator-by-digestseo/badge.svg)](https://mcp.tc/i/web-validator-by-digestseo)

HTML

<a href="https://mcp.tc/i/web-validator-by-digestseo"><img src="https://mcp.tc/i/web-validator-by-digestseo/badge.svg" alt="Web Validator by DigestSEO on mcp.tc" height="20"></a>

listing.em.badge_note

listing.em.widget

HTML

<script src="https://mcp.tc/w/web-validator-by-digestseo.js" async></script>

listing.em.widget_note

iframe

HTML

<iframe src="https://mcp.tc/embed/web-validator-by-digestseo" title="Web Validator by DigestSEO on mcp.tc" width="420" height="200" loading="lazy" allow="clipboard-write" style="border:0;border-radius:8px;max-width:100%"></iframe>

listing.em.iframe_note

JSON

listing.em.json

https://mcp.tc/i/web-validator-by-digestseo.json

listing.em.fields