SEO Metadata & JSON-LD Change Audit API

JSON-LD & Schema.org Extractor

andok/jsonld-extractor

Extract structured microdata (JSON-LD) from webpages to audit SEO schema implementations and rich snippets.

Bulk SEO Audit - Titles, Meta, Headings, Schema, Links

thirdwatch/seo-data-extractor

Run an SEO audit on hundreds of pages at once. For each URL you get the title, meta description, headings, canonical, Open Graph and Twitter cards, schema markup, image alt-text gaps, internal and external link counts, and word count. The fastest way to check on-page SEO across a whole site.

Instagram SEO Audit & Growth Optimizer

ittechinnovators/instagram-seo-audit-growth-optimizer

Analyze public Instagram profiles with an AI-powered SEO audit. Get SEO Score, profile optimization, content analysis, keyword research, hashtag audit, engagement metrics, growth opportunities, strengths, weaknesses, quick wins, and AI recommendations to boost reach and visibility.

Free SEO & metadata audit for any URL: title, meta description, OpenGraph, Twitter card, JSON-LD types, canonical, hreflang, viewport, robots, and link/image checks. No API key.

Advanced SEO & Business Visibility Audit Tool

ittechinnovators/advanced-seo-business-visibility-audit-tool

AI-powered tool that audits websites and directory listings to analyze SEO health, Google visibility, reviews, social presence, and local business signals, delivering actionable insights to improve rankings and lead potential.

SEO Site Audit — Website SEO Checker & Crawler

saliga/seo-site-audit

Crawl a website and audit every page for technical and on-page SEO: a 0-100 score, issues with fix hints, broken internal links, duplicate titles, orphan pages, canonical and robots problems, plus a site summary. $3 per 1,000 pages.

Catch SEO disasters before Google does: watches robots.txt, XML sitemaps and key pages for Disallow: /, noindex, canonical and status changes, sitemap URL drops and errors. Diffs vs last run, Slack/webhook alerts, HTML report.

Hreflang Tag Checker API | SEO Validator

andok/hreflang-checker

Bulk validate website hreflang tags for international SEO. Audit multi-language sites for missing x-default tags, bidirectional errors, and ISO code compliance.

Comprehensive SEO audit tool that scans websites for technical SEO issues, content gaps, and optimization opportunities. Get actionable recommendations to improve search rankings.

Extracts and audits title, description, canonical URL, robots metadata, Open Graph, Twitter Card, headings, JSON-LD types, hreflang links, and image alt coverage from one public webpage.