# SEO Hack Pack: Find Duplicates Before Google Nukes You

**URL:** <https://onehack.st/t/seo-hack-pack-find-duplicates-before-google-nukes-you/310865>\
**Category:** Tools & Scripts\
**Tags:** seo, programming\
**Created:** [September 18, 2025, 12:29am UTC](https://onehack.st/t/seo-hack-pack-find-duplicates-before-google-nukes-you/310865 "2025-09-18T00:29:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Prometheus](https://onehack.st/user_avatar/onehack.st/prometheus/32/34950_2.png) [@Prometheus](https://onehack.st/u/Prometheus)\
**Post date:** [September 18, 2025, 12:29am UTC](https://onehack.st/t/seo-hack-pack-find-duplicates-before-google-nukes-you/310865/1 "2025-09-18T00:29:18Z")

</div>

# Cutting-Edge, 100% Free Duplicate-Content Detectors

Forget those boring-ass “SmallSEOTools” wannabes—this list is the black-market stash your SEO guy doesn’t want you finding. Raw, open-source, zero paywalls. These tools don’t just _check_ for duplicates, they drag your thin, recycled content into the light and scream: _“WTF is this garbage?”_

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## 1. duplicatedcontentchecker (GitHub)

👉 [https://github.com/andersonkevin/duplicatedcontentchecker](https://github.com/andersonkevin/duplicatedcontentchecker)  
**What it does:** Crawls your domain (custom depth), strips the fluff, then compares pages with hashing + Cosine Similarity. Drops a neat CSV with similarity scores.  
**Why it slaps:**

- Scriptable Python—run it your way, not some SaaS limit prison.
- Ignore navs/footers with filters.
- Perfect for auditing _hundreds_ of pages like a machine, not a masochist.

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## 2. python-seo-analyzer (GitHub)

👉 [https://github.com/sethblack/python-seo-analyzer](https://github.com/sethblack/python-seo-analyzer)  
**What it does:** CLI spider that counts text, flags identical word-count twins, and calls out boilerplate blocks repeated across URLs.  
**Why it slaps:**

- Duplicate checks built right into an SEO spider.
- Lightweight Python, no bloated junk.
- CI-friendly—automate and forget.

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## 3. seoo – SERP Similarity Tool (GitHub)

👉 [https://github.com/altuseo/seoo](https://github.com/altuseo/seoo)  
**What it does:** Uses SerpAPI free credits to fetch SERPs, vectorizes titles/snippets, then screams at you when your own pages look like twins on the same query.  
**Why it slaps:**

- Finds cannibalization _before_ Google body-slams your rankings.
- Streamlit UI or Python lib—pick your poison.
- 100% free if you don’t blow your SerpAPI free quota.

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## 4. similarity\_analyzer (GitHub)

👉 [https://github.com/valka465/similarity\_analyzer](https://github.com/valka465/similarity_analyzer)  
**What it does:** Scrapes SERPs with HasData’s free tier, then runs TF-IDF + Jaccard to compare your junk with competitors’ junk.  
**Why it slaps:**

- Shows _where you’re cloning your rivals_.
- Great for spotting “oh crap, we copied their blog by accident” moments.
- Fully open-source, no begging a SaaS.

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## 5. Screaming Frog SEO Spider – CLI Mode

👉 [https://www.screamingfrog.co.uk/seo-spider/](https://www.screamingfrog.co.uk/seo-spider/)  
**What it does:** Free up to 500 URLs. Exports hashes, groups duplicates, and lets you yank out boilerplate via XPath before hashing.  
**Why it slaps:**

- Local desktop tool—your machine, your rules.
- Exact + near-duplicate tabs ready to humiliate your content team.
- Bonus: free CLI mode feels hacker-y as hell.

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💡 Bottom line: These free, sneaky bastards will expose every duplicate and thin-content clone hiding on your site. No subscriptions, no mercy, just pure SEO bloodsport.

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