Free AI SEO Tools & Utilities for Vibe Coded Websites
A curated collection of framework-native plugins, JavaScript crawlers, and performance utilities built to audit, and index modern vibe-coded web applications.
[Unlighthouse]
Google Lighthouse runner designed to scan entire JavaScript framework sites concurrently, tracking Core Web Vitals across every route at once.
[Unpic]
Framework-agnostic responsive image component for React, Vue, Svelte, and Solid. Handles auto-formatting, WebP conversion, and layout-shift prevention.
[rollup-plugin-visualizer]
Bundle-size analyzer for Vite, Vue, and SvelteKit applications that maps chunk distributions across dynamic routes.
[@next/bundle-analyzer]
Visualizer for Next.js app bundles that identifies bloated npm dependencies pulled in by AI coders.
[IndexNow]
An open protocol (supported by Bing, Seznam, and Yandex) that instantly notifies search engines whenever dynamic pages are created, modified, or deleted in your codebase.
[DataForSEO]
An API provider for raw SERP data, keyword volumes, and backlink metrics. Allows you to build custom, in-app SEO tools and programmatic landing pages without paying per-seat SaaS costs.
[Firecrawl]
An API that turns entire website URLs into clean, LLM-ready Markdown or structured JSON. Useful for scraping competitive page structures or building programmatic landing pages with AI.
[Sitebulb]
A desktop website crawler with visual diagrams. Explains JavaScript hydration issues, internal linking depth across framework routes, and crawl-budget drain in plain language.
[Google Search Console]
Google's primary webmaster platform. Uses the "URL Inspection Tool" to run live test renders, showing you exactly how Googlebot's Web Rendering Service (WRS) sees your dynamic app.
[Screaming Frog SEO Spider]
Industry-standard crawler equipped with Chromium JS execution. Crawls hydrated DOMs, spots broken dynamic routes, identifies missing client-rendered h1s, and exposes hydration errors.
[Classy Schema]
A visual structured data generator and validator. Allows you to build custom JSON-LD schema blocks visually and drop them straight into your framework's global scripts.
[schema-dts]
TypeScript type definitions for Schema.org JSON-LD markup. Gives AI coding assistants (like Cursor, Claude, or v0) strict type safety when auto-generating structured data for your layouts.
[Unhead]
The universal head manager for Vue, Nuxt, SvelteKit, and React. Prevents memory leaks and handles dynamic meta tag updates across client-side router transitions.
[Next-SEO]
A plugin for managing Next.js head tags. Keeps canonicals, OpenGraph, title tags, and JSON-LD schema synced properly during client-side navigation.
[Vercel OG]
Generates dynamic OpenGraph and social preview images on the fly using Svelte/React edge functions, fixing broken social cards on dynamically generated routes.
[Playwright]
Microsoft's end-to-end testing library. Works like Puppeteer to automate cross-browser JS rendering, snapshot HTML, and visually audit rendered layouts before deployment.
[Puppeteer]
A Node.js library that controls headless Chrome/Chromium. Ideal for building custom server-side pre-rendering setups, automated static snapshot generators, or pre-deploy validation pipelines for dynamic builds.
[Prerender.io]
Intercepts web requests and automatically serves static, pre-rendered HTML snapshots of client-rendered JS apps to search bots. Essential if your vibe-coded site runs purely on client-side React, Vue, or Vite without native SSR.
[PageSpeed Insights]
Test your Core Web Vitals and get actionable improvement suggestions.