100% free and open source

OctopusOn Index Checker

A free Google index checker for broken indexed pages: find URLs that Google, Bing and Yandex still show but your site answers with 404s, server errors, soft 404s or thin content, and get 301 redirect rules ready to deploy.

Download free GitHub project

Windows, macOS & Linux · SEO and GEO · Updated continuously · No account, no limits

OctopusOn Index Checker window
Index health

An indexed pages checker that also writes the fixes

Discover, check and fix the URLs search engines still remember.

site: search tool

Collect indexed URLs from site: searches on Google, Bing, Yandex and DuckDuckGo, with automatic subdirectory queries.

Indexed 404 finder

Spot indexed URLs that now return 404, 410, other 4xx or 5xx errors.

Soft 404 checker

Detect 200 pages that say “not found”, deep URLs redirected to the home page, and canonical or meta refresh tricks.

Thin content checker

Flag indexed pages under your word-count threshold, 60 words by default.

301 redirect generator

Rules for Nginx, Apache, Caddy, IIS, Cloudflare, Vercel and Next.js, with suggested targets.

Orphan and sitemap checks

Find indexed pages missing from your sitemap, broken sitemap URLs and noindex pages.

Directory health

An index health score and per-folder clusters with suggested actions.

Scan comparison

Check again later and see resolved, new, persistent and dropped URLs.

Find the URLs search engines still remember

Free sources first, optional APIs when you need more.

  • site: searches on Google, Bing, Yandex and DuckDuckGo in a browser you watch, no key needed
  • XML sitemaps, robots.txt, extra keywords and ready-made search operators
  • URL lists pasted in or imported from Search Console and Yandex Webmaster
  • Optional Serper and SerpApi with your own key or OctopusOn credits
  • Wayback Machine and Common Crawl marks for URLs that were archived

Check every indexed URL like a crawler

Each URL is fetched with its redirects followed and sorted by what needs fixing.

  • 404 and 410, other 4xx, 5xx errors and redirect loops
  • Soft 404s from the page text, redirects to the home page, canonicals or meta refresh
  • Thin pages, noindex pages, broken sitemap URLs and orphan indexed pages

Fix it in minutes with 301 redirects

Turn the findings into redirect rules and lists your developers can deploy.

  • 301 and 410 rules for Nginx (with directory wildcards), Apache, Caddy, IIS, Cloudflare, Vercel and Next.js
  • WordPress and Shopify redirect CSVs
  • Removal lists for Search Console and Yandex, a clean sitemap and IndexNow lists
  • Suggested 301 targets you review URL by URL

Track index health over time

Every scan is saved, so you can prove a cleanup worked.

  • Index health score and per-directory clusters
  • Scan comparison: resolved, new, persistent and dropped from the index
  • Re-check single URLs after a fix
  • Excel, CSV, JSON and Markdown reports
100% free and open source

Free forever. APIs are optional

There is no paid version, no trial and no limit: every program is free and open source. Search APIs are an optional extra for more data: bring your own keys, or use one OctopusOn connection for all of them.

100% free

Free

Crawling, log analysis, scoring and every report run locally at no cost and with no limits.

  • No account needed
  • No URL or project limits
Optional

Your own API keys

Connect the providers you already pay for and strengthen the analysis with their data.

  • DataForSEO, Serper, SerpApi, Yandex Search API and Wordstat
  • Google Search Console and Ads with your own Google sign-in
  • Budgets and a cost estimate before every run
Optional

One OctopusOn connection

Skip the sign-ups: connect once at my.octopuson.com and every program uses every supported API with prepaid credits.

  • Pay per request, no subscription
  • One balance for all programs
  • Choose your key or credits per source
Get credits

Index Checker questions

Is the Index Checker free?

Yes, 100% free and open source. site: searches, sitemaps and every check work without an API key; Serper and SerpApi are optional.

Does it show Google Search Console's index status?

No. It finds URLs through search results, sitemaps and your own lists, then checks how your server answers them. For Google's own verdict on a URL, use URL Inspection in Search Console.

What is a soft 404?

A page that answers 200 OK but tells visitors the content is gone, or a deep URL redirected to the home page. Search engines treat both like errors.

Which redirect formats can it export?

Nginx, Apache, Caddy, IIS, Cloudflare, Vercel and Next.js rules, WordPress and Shopify CSVs, plus removal lists, a clean sitemap and IndexNow lists.

Does it submit URLs to search engines?

No. It prepares IndexNow and removal lists; you decide what to submit.

Command line

Every feature also works from the terminal, for scripts and scheduled jobs.

octopuson-index scan example.com
octopuson-index redirects latest --format nginx -o redirects.conf

Desktop app

Command line

FileSizeSHA-256
octopuson-index-index-v0.1.0-aarch64-apple-darwin.tar.gz15.1 MBaa3010216f1e1ef255f8…
octopuson-index-index-v0.1.0-x86_64-apple-darwin.tar.gz16.4 MBb9011db8375b02bb828d…
octopuson-index-index-v0.1.0-x86_64-pc-windows-msvc.zip13.2 MB78fca615e9ea0a78a764…
octopuson-index-index-v0.1.0-x86_64-unknown-linux-gnu.tar.gz17.9 MB493fdc09c10f307ab762…

All files on GitHub →All downloads →

Clean up your index for free

Download OctopusOn Index Checker, scan your domain and get redirect rules for every broken indexed URL.

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