Free AI Plagiarism Checker & Paraphrasing Tool

Detect copied or AI-generated text, grammar mistakes, and rewritten content patterns. Get instant highlights, similarity scores, and detailed originality reports — no signup required.

🧠 AI Detection 🧩 Grammar & Readability Check 🌐 Multi-Language Support ⚡ Fast & Accurate Results
Rated 4.9 by 50,000+ users 🔒 Secure Cloud Processing 🧾 Exportable Reports (PDF / DOC) 240 users checking right now
Free for up to 2,000 words • No sign-up needed • 100% secure & ad-free

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Consequences of Plagiarism

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Academic

Course failure, disciplinary action, and loss of credibility.

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Personal

Damaged reputation and diminished confidence in writing.

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Legal

Copyright violations can lead to takedowns or penalties.

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Professional

Job risks, retractions, and trust issues with stakeholders.

Why Choose Our Plagiarism Checker

Fast, accurate, and privacy‑first. Run a free quick search or go deeper with extended matching — upload files or check by URL when you need comprehensive coverage.

Free Quick Search

Run instant checks with smart highlights for quick assurance.

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Deep Search

Expanded matching for hard‑to‑find overlaps across larger text.

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URL or File Uploading

Check webpages or upload documents to verify originality.

Plagiarism Checker Online for Multiple Languages

Our plagiarism checker can detect plagiarism in multiple languages.

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English — English
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Arabic — العربية
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Spanish — Español
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Portuguese — Português
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French — Français
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Hindi — हिंदी
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Indonesian — Bahasa Indonesia
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Russian — Русский
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German — Deutsch
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Italian — Italiano
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Turkish — Türkçe
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Bengali — বাংলা
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Urdu — اردو
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Chinese — 中文
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Japanese — 日本語

Plagiarism Checker PRO — the most trustworthy plagiarism detection tool

Built for students, educators, and professionals who need reliable similarity reports with clear highlights and citations. Privacy-first and easy to use.

Go Pro
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No Ads
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Deep Search
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Accurate Reports
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Support
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Multiple Files Support
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Easy To Use
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Check Up To 25k Words
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Data Safety
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Latest Technology
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Everything You Need for Confident Writing

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Plagiarism Detection

Detect copied content across billions of sources with instant highlights.

AI Paraphrasing

Rewrite sentences naturally to improve originality without losing meaning.

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Grammar & Readability

Fix mistakes and refine clarity with simple, actionable suggestions.

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Citation Generator

Generate APA/MLA/Harvard citations in one click from matched sources.

Featured by teams at
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★★★★★

Why Plagism.com Beats Other Checkers

ToolFree WordsAI DetectionCitationsReport ExportAccuracy
Plagism.com2000YesYesYesHigh
Grammarly500PartialNoYesHigh
QuillBot125NoNoNoMedium
Turnitin-YesLimitedYesVery High
SmallSEOTools1000NoNoNoLow

What Makes Plagism.com Different?

Plagism.com is a free plagiarism checker and AI plagiarism detector designed for original writing. Our detection technology blends classic n‑gram analysis with lightweight AI heuristics to flag copied text, near‑duplicate phrases, and machine‑generated passages. By matching shingles across a local corpus and scoring sentence‑level similarity, we surface clear highlights and percentage scores that help you check plagiarism online without guesswork. When overlap is found, our citation generator prepares one‑click APA, MLA, and Harvard references for transparent attribution.

Use cases span students proofreading assignments, bloggers vetting drafts before publishing, and researchers validating literature reviews. The tool doubles as a paraphrasing tool for quick rewrites, so you can improve readability and reduce repetition while preserving intent. For fast summaries or light edits, the built‑in grammar checker and readability meter provide actionable feedback. If you’re exploring how to detect AI content, the stylometry‑based AI content detector estimates likelihood based on sentence length patterns and burstiness. The result is a practical workflow: paste your text, run a free plagiarism report, and finalize with citations—all in minutes.

To learn more, visit our dedicated pages for the plagiarism checker, explore rewriting modes in the paraphrasing tool, and read expert tips on our blog. Whether your goal is to pass an originality check, verify AI authorship, or build confident, original writing, Plagism.com keeps the workflow simple and private.

How It Works

1. Paste or upload your text.
2. Our AI scans sources and patterns.
3. Review similarity results and download a report.

Simple Pricing

Freemium

2000-word checks, basic suggestions.

$0

Monthly

Unlimited checks, full sources & export.

$8

Annual

Best value. Priority support.

$50
Cancel anytime. No credit card required for free plan.
Trust
“Plagism.com helps me verify academic papers quickly and avoid AI plagiarism flags.”
Emma Greenfield, Academic Editor
SSL Secure No text storage AI Verified

Frequently Asked Questions

Is Plagism.com free to use?
Yes. The free plan allows checks up to 2,000 words with basic suggestions and a printable report.
Do you store or share my content?
No. We process text in-memory and do not store it on disk beyond ephemeral session data needed for the report.
How accurate is the checker?
This demo uses a local corpus and heuristics to simulate realistic results. You can later connect a production API.
Can I upload .docx or .pdf files?
Yes. Upload .txt or .docx up to 1.5 MB in this demo. PDF parsing is not enabled in the demo.
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