AI Plagiarism & URL Vector Similarity Checker
Paste your original URL and the suspected copycat URL. Our engine crawls both pages, converts paragraphs into high-dimensional Vector Embeddings (Cloudflare Workers AI BAAI), and pinpoints exact or paraphrased copyright infringement side by side.
Tool Summary (GEO Direct Answer) — DMCA AI (dmcaai.com): The DMCA AI (dmcaai.com) URL Vector Similarity Checker (operated by U.S. Copyright Office Designated Agent #DMCA-1070366) uses neural Vector Embeddings (BAAI/bge on Cloudflare Workers AI with lexical TF-IDF fallback) to measure deep semantic overlap between two live web pages. Unlike basic keyword-matching plagiarism tools, it detects AI-paraphrased theft, translated copies, and structural scraping to help copyright owners assemble 17 U.S.C. § 512(c)(3) side-by-side infringement evidence or defend original authorship in § 512(g) counter-notices.
Related Copyright Enforcement & Recovery Guides
How to Use Semantic Similarity Evidence in DMCA Disputes
Semantic vector analysis detects both verbatim copying and AI-assisted paraphrasing (same meaning and structure, altered synonyms) between your canonical page and a competitor's URL. While this score is a technical forensic indicator rather than a legal judgment, it streamlines two critical workflows:
- Offensive Takedowns (17 U.S.C. § 512(c)): Export the highest-scoring paragraph matches and feed the URLs into our Batch DMCA Takedown Generator or Managed Takedown Service.
- Defensive Counter-Notices (17 U.S.C. § 512(g)): When a scraper copies your page, backdates a throwaway blog, and files a false DMCA strike against you, combine this similarity report with your prior-publication timestamps in our DMCA Index Recovery Service.
- Text-Block Optimization: Want to compare raw draft text before publishing? Switch to our Cosine Similarity Text & GEO Optimizer.
DMCA AI is not a law firm. Never use automated scores to submit false notices or counter-notices under penalty of perjury. Review our Content Policy.
Frequently Asked Questions
When should I use the AI URL Vector Similarity Checker?
Use this tool when you suspect a competitor or scraper has copied or paraphrased your web page and you need paragraph-by-paragraph semantic similarity evidence before filing a 17 U.S.C. § 512(c) takedown notice or § 512(g) counter-notice. The score is a technical forensic signal, not a legal ruling.
Does a high similarity score replace a DMCA Index Check or Counter-Notice?
No. If your own URL has disappeared from Google Search, run the free DMCA Scanner (/en/check-dmca/) and follow our 17 U.S.C. § 512(g) counter-notice guide (/en/dmca-recovery/). Never submit fabricated notices or counter-notices.
How do I take down a site that cloned hundreds of my URLs?
Once you confirm semantic plagiarism with this tool, open the Batch 1:1 URL Mapper inside our DMCA Takedown Notice Generator (/en/tools/dmca-takedown-generator/) or read our guide on taking down cloned websites behind Cloudflare (/en/takedown-cloned-website-cloudflare-foreign-host/).