The direct answer

Gutenberg and Elementor both produce clean, semantic HTML when used correctly — but both can also produce heavily polluted HTML when used incorrectly. The specific settings, block types, and editing habits that produce clean versus dirty output are not obvious, and most site owners are unknowingly creating AI indexing problems with every page they build.

The correct way to use Gutenberg for clean AI-readable HTML

Gutenberg produces clean semantic HTML when you use its native block types correctly — Heading blocks for headings, Paragraph blocks for body text, List blocks for lists, and Quote blocks for quotations. The problems arise when content editors use workarounds: pasting formatted text from external sources, using Classic Editor blocks that carry formatting artifacts, or using heading blocks at the wrong levels for visual effect rather than structural meaning.

Gutenberg settings that affect HTML output quality

• Classic blocks — the Classic block is a legacy editor block that uses TinyMCE, which is more prone to dirty HTML output than native Gutenberg blocks. Avoid Classic blocks on new content and migrate any existing Classic block content to native Gutenberg blocks when editing those pages.
• Custom HTML blocks — valid for embeds and custom code, but content in Custom HTML blocks is not processed through Gutenberg’s clean output system. Keep body content in native blocks and reserve Custom HTML for widgets, embeds, and scanner code.
• Reusable blocks — clean when the original block is clean, but can carry formatting artifacts if the reusable block was created from pasted content.

The correct way to use Elementor for clean AI-readable HTML

Elementor’s output quality depends heavily on widget selection and settings. The Heading widget outputs a clean H1/H2/H3 element with no extra markup when given a correct heading level. The Text Editor widget, which uses TinyMCE, can produce dirty HTML from pasted content — the same problem as the Classic block in Gutenberg. Use the Text Editor widget only for plain text that is typed directly, not for content pasted from external sources.

Key Elementor settings for clean HTML output

1. Go to Elementor > Settings > Advanced
2. Enable Improve DOM Output — this reduces unnecessary div wrapper nesting that adds noise to the HTML
3. In each section’s Advanced settings, remove any inline styles added through the Section Background or spacing settings that are not structurally necessary
4. Use the Heading widget’s HTML tag setting to set the correct heading level (H1, H2, H3) rather than using Text widgets with manual font sizing
5. After building a page, view the page source and verify the heading hierarchy looks correct and there are no excessive inline style attributes on content elements

How ANI, AEO, GEO, SEO, and ASI work together here

ANI is the technical foundation that makes every other optimization discipline effective. Every improvement you make to your crawler access, HTML structure, or author attribution directly benefits your AEO citation rates, your GEO topical authority recognition, and your SEO technical health simultaneously. ANI work is not siloed — it compounds across all five disciplines at once.

Related ANI guides

Semantic HTML for AI · Correct heading hierarchy · Checking for dirty HTML

The complete ANI guide library at teachmeoptimization.com/ani covers all 24 topics across five categories — from fundamental concepts to step-by-step implementation and quarterly audit processes.

Common mistakes to avoid

A common Elementor mistake is using the Text Editor widget for long-form content because it offers more familiar formatting controls. The Text Editor widget uses TinyMCE, which produces dirtier HTML than Gutenberg’s native blocks. For long-form content pages, use Gutenberg with native blocks rather than building pages entirely in Elementor. Use Elementor for layout and design elements, and Gutenberg native blocks for the actual article content.

Quick implementation checklist

• Enable Improve DOM Output in Elementor > Settings > Advanced
• Use Heading widgets for all headings — never Text widgets for sized text
• Avoid Text Editor (TinyMCE) widgets for long-form content
• Paste content into Text widgets using plain text only
• Check page source after building in Elementor for excessive div nesting
• Verify correct H1/H2/H3 levels in Elementor Heading widget settings

How this connects to the full ANI system

Clean HTML output from page builders is an ANI requirement that also benefits SEO and page performance. Reducing unnecessary HTML markup improves crawler efficiency and reduces page weight simultaneously. For the complete ANI implementation guide covering all 24 topics in sequence, see the full ANI guide at teachmeoptimization.com/ani.

Measuring improvement

After implementing the steps in this guide, revisit your server access logs in 2 to 4 weeks to confirm AI crawler visits. Run your site through the free TeachMeOptimization scanner to check your ANI score before and after. Track your AI citation rate monthly using the manual Perplexity and ChatGPT audit process described in the ANI audit guide — citation rate improvement is the ultimate measure of whether your ANI implementation is working.

Why this matters for your overall optimization strategy

Every ANI improvement compounds with your AEO and GEO work. When AI crawlers can access your site cleanly, read your HTML correctly, and confidently attribute your content to a named, credentialed author, every piece of content you publish starts from a stronger position. The citation rates you earn from well-optimized AEO pages are higher, the topical authority you build through GEO content architecture is more quickly recognized, and the overall efficiency of your optimization investment improves significantly.

The quarterly ANI maintenance habit

ANI is not a set-and-forget discipline. Security plugin updates can add new bot blocking rules. New AI crawlers emerge that need to be added to your robots.txt allow list. Content editing habits can introduce new HTML artifacts over time. A 30-minute quarterly ANI check — reviewing your robots.txt, checking server logs for crawler visits, running the Rich Results Test on a few key pages, and verifying your author box is displaying correctly — keeps your technical AI accessibility foundation solid as your site grows. The quarterly check is a small time investment that protects the much larger time investment you have made in content creation and optimization.

For the complete ANI audit process covering all three technical layers — crawler access, HTML structure, and attribution — see the full ANI audit guide and the ANI checklist. Together they give you the complete framework for verifying every ANI signal is correctly implemented and maintaining it over time.