Free Plagiarism Checker

Scan your content for duplicate text across the web. Keep your blog posts original and avoid Google SEO penalties from duplicate or copied content.

🔍 Duplicate Detection

📊 Originality Score

🔗 Source Matching

🔒 No Sign-Up

🔍 Paste your content to check for plagiarism

0 words · 0 sentences · minimum 50 words recommended

Scanning for duplicate content…

Comparing against billions of web pages

Splitting content into phrases

Searching web for matches

Analysing similarity scores

Identifying source URLs

Calculating originality score

— Original

Checking…

🔍 Content Analysis

High similarity

Possible match

Original

🔗 Potential Source Matches

ℹ️ About this tool: This plagiarism checker analyses text patterns and common phrases to estimate originality. It is designed as a writing quality guide. For academic or legal purposes, use a dedicated professional plagiarism service. Results are based on phrase-matching heuristics, not a live web crawl.

🤖 Check for AI Content Too

📊 Originality Score Guide

Fully Original90–100%

Mostly Original75–89%

Some Similarities50–74%

High Similarity25–49%

Likely Plagiarised0–24%

🔍 Why Originality Matters for SEO

🚨

Google's Panda algorithm specifically targets thin and duplicate content — it can suppress your entire site.

🏆

Only one version of duplicate content will rank. If yours isn't the original, Google won't show it.

🔗

Backlinks pointing to copied content provide no SEO benefit — links only work for original pages.

✍️

Rewrite, add context, and include your own analysis — even referencing others requires original commentary.

📊

Aim for 90%+ originality on all published content — especially on competitive keywords.

📖 Learn Content SEO

Want to write content that ranks? Our SEO guide covers content uniqueness, quality signals, and E-E-A-T from scratch.

Read the Guide →

Free Plagiarism Checker

AI Content Detector

Word Counter

Site SEO Audit ⭐