WebABC SEO Suite — Native Astro & EmDash CMS Plugin
In-Process Edge SEO, Generative Search (GEO), AEO, and Readability Engine for Cloudflare Workers
Pre-Deployment Constraints & Problem Statement
CMS plugins traditionally depend on heavy PHP runtimes or complex multi-tenant worker loaders that blow past Cloudflare Workers Free Tier CPU limits (10ms) and cause severe TTFB regressions.
Architectural Solution & Deployment Strategy
Engineered an in-process native plugin (@emdash/plugin-seo / webabcSeoPlugin) for Astro and EmDash CMS. Runs under 10ms CPU constraints with zero subscription dependencies. Features Hemingway-style readability color-scoring, live SERP/social previews, automated Schema.org entity inference, alt-image accessibility auditing, fuzzy 301 redirects, and dynamic edge-rendered /llms.txt knowledge bases.
[Core Architectural Pipelines]:
- ►In-Process Native Astro Plugin Architecture (Zero Worker Loader Dependency)
- ►Levenshtein & Jaccard Algorithmic Fuzzy 301 Redirect Remediation
- ►Dynamic Schema.org Inference Engine (inferSchemaType) with Manual Overrides
- ►Flesch Reading Ease & Passive Voice Live Analysis Studio
- ►Dynamic Edge-Rendered /llms.txt and /llms-full.txt Endpoints
Subsystem Engineering & Modules
Unified Admin Hub
Consolidated under a single WebABC SEO menu item in EmDash with clean tabs: SEO Settings, SERP/Social Preview, Readability Checker, Alt Image Auditor, and Fuzzy 301 Redirects.
GEO & AEO Citation Readiness
Scores lead paragraphs, definition blocks, structured bullet lists, and summary tables for direct extraction by ChatGPT, Perplexity, and Google AI Overviews.
Fuzzy 301 Redirect Matching
Calculates combined Levenshtein distance and Jaccard token similarity across published slugs to automatically rescue broken or dead URLs.
Dynamic /llms.txt Generator
Generates clean markdown entity specifications and full corpus summaries on-the-fly at the edge without manual disk maintenance.
Verified Yield & Deliverable Outcomes
- ✔< 10ms edge CPU execution time verified on Cloudflare Workers Free Tier
- ✔100% automated WordPress SEO data migration (Rank Math Pro, Yoast, AIOSEO)
- ✔Sub-second fuzzy redirect matching eliminating 404 crawl budget penalties
- ✔Full typed SVG icon library with strict 500-line modular code standard
- ▸Published open-source repository at github.com/alibakhtiari/emdash-seo
- ▸Automated WordPress migration scripts for Yoast, Rank Math, and AIOSEO
- ▸Comprehensive test suite in vitest covering edge schema and fuzzy matching
- ▸Drop-in Astro config integration (webabcSeoPlugin)
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