javascript-seo

Maintained react-snap alternative: MIT drop-in replacement for existing React/Vite SPAs. Prerenders to static HTML with Playwright, hydration checks and AI-crawler-friendly output.

Prerender any JavaScript web page to static HTML. A modern, Playwright-powered prerender server you can start in one line.

16 free Agent Skills (SKILL.md) for technical SEO: site audits, crawling and indexing, robots.txt, XML sitemaps, canonicals, redirects, JavaScript SEO, Core Web Vitals, schema, log files and migrations. For Claude, Claude Code, Codex and AI agents.

Open-source CLI companion to the Prerender Buddy platform for crawler and discovery-file diagnostics.

Evidence-bound SEO and agent-readiness workflow for scanning live sites and producing validated remediation reports.

MCP companion to the Prerender Buddy platform for crawler diagnostics and optional workspace evidence.

What Googlebot sees before JavaScript runs: no-JS vs rendered views, diffed, with a CI gate.

Check if a webpage is server-side rendered. See what Googlebot and AI crawlers actually see.

Free JavaScript SEO render checker — compare raw HTML with the rendered DOM and see what Google actually sees.

Search Atlas review 2026: run one script and see whether OTTO SEO's changes reach Google and AI crawlers. No account needed. Sourced pricing and limits.

AI crawler checker: Chrome extension + MCP server that shows which content GPTBot, ClaudeBot and other AI crawlers can't see because it needs JavaScript (raw HTML vs rendered).

Can AI crawlers read sites built with Lovable, Bolt and Replit? 50 sites measured, with the scripts and raw data.

A hands-on Technical SEO portfolio documenting real-world investigations, website audits, experiments, and automation projects.