Social Preview Checker

zinin/social-preview-checker

Audit observed Open Graph and Twitter Card metadata for up to 100 authorized public pages. Delivered rows include tags, image checks, bounded share score, confidence, gaps, next action, and billing. Platform previews may differ due to caching and rendering; non-delivery is free.

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.

SEO Audit & Metadata Checker: Title, Meta, Canonical

pavel.tashev/seo-metadata-audit

SEO audit and meta tag checker: crawl a site or check single pages for title tags, meta descriptions, canonical, hreflang, Open Graph, structured data, redirects and headings, with issues and a 0-100 score. Never charges for a failed or empty result.

Bulk URL Status & Redirect Chain Checker

technicaldost/bulk-url-status-redirect-checker

Check thousands of URLs for broken links, redirect chains and HTTP status in one run. Returns every hop of each redirect, the final destination, whether HTTP upgraded to HTTPS, and redirect loops. No browser, no API key.

Sitemap Freshness & Schema Integrity Auditor

sebastian-actors/sitemap-freshness-schema-integrity-auditor

Audit sitemap lastmod, schema dates, and page freshness with static HTTP checks and deterministic issue codes.

Audit public web pages for titles, descriptions, canonical URLs, robots directives, social tags, headings, and selected security headers. Returns one structured result per URL.

Free API: turn any URL into clean link-preview metadata including title, description, Open Graph and Twitter card, favicon, canonical, and language. Powers link unfurling and preview cards. No login.

JSON-LD Schema & Meta Tag Extractor

logiover/json-ld-schema-meta-tag-extractor

Bulk JSON-LD structured data scraper and meta tag extractor for any URL. Export Schema.org, OpenGraph and Twitter Cards to CSV/JSON. No API.

WhatsApp Scraper — Numbers, Channels & Groups

crawloop/whatsapp-scraper

Scrape public WhatsApp data from phone numbers, channel pages, group invite links, and business catalogs: name, photo, followers, bio, catalog flag, and latest updates. No login, no QR code.

Article & News Extractor returns clean article text, title, author(s), publish/modified date, tags and images from any news or blog URL — one row per URL, as Markdown, plain text or HTML.

Schema.org for LLMs Audit

zinin/schema-org-for-llms-audit

Audit public static pages for LLM-facing organization, product and article facts across JSON-LD, Schema.org and OpenGraph; find missing identity signals and contradictions without an LLM.