Antipla

[Plagiarism and AI checker for students and teachers]

Check your document for plagiarism and AI

Find copied sources and machine-typical passages in seconds. Detailed, source-linked reports you can check yourself.

Upload your document

no sign-up · result in 1 minute

Check before you submitReport with source linksBillions of sourcesNot added to any database
PDF

PDF report with your results

  • Every match highlighted in your text, with its source
  • A QR code on it lets anyone verify it online

Comes with the full report


[How it works]

Three steps to results

01

Upload Your Document

Drop a PDF, DOCX, DOC, RTF, or TXT file, paste text, or enter a URL. We handle the rest.

02

Deep Analysis

We compare against billions of online and academic sources, detecting both plagiarism and AI-generated content in seconds.

03

Get Your Report

Receive a detailed report with highlighted matches, sources, and scores.


[Why it matters]

Papers from the United States — live

These numbers aren’t typed in by hand: we count them every hour from our database, only for papers from the United States.

Live · United States

Pages checked from the United States

Papers from accounts and IP addresses in the United States

last 90 days700+

1 page = 250 words. Updated hourly, rounded down.

Live · United States

Time to result

Median for papers from the United States over the last 30 days — half were ready sooner

Preview without an account24 s

From upload to result, including the queue.

The web and scholarly publications

We search phrases from your paper on Google and compare the pages we find: Wikipedia, articles, theses in open university repositories. Every match links to its source.

Preview without an account

Upload a file and see the result — no sign-up, no card and no email.

Not added to any database

We never compare your paper with other people’s work, and it will never become a source in someone else’s check. We don’t store its text — the file is deleted right after upload.

Result usually in a minute

The preview is usually ready in under a minute. A long thesis takes a few minutes — you can watch the progress the whole time.

AI content detection

Pattern analysis highlights passages whose style matches ChatGPT, Claude, Gemini and other AI tools. It reads style, not authorship.

Transparent results

Every match links directly to its source with side-by-side comparison. No black-box scores — you see exactly what was found and where.


[Features]

Everything you need to verify content

From plagiarism scanning to AI detection, our platform gives you the tools to ensure every document meets your standards.

Plagiarism Detection

Cross-reference your text against billions of web pages, academic papers, and published content.

AI Content Detection

See which passages are written in a style typical of ChatGPT, Claude and other AI tools.

PDF Export

Download professional reports with QR verification codes ready for submission.

Writing Quality Assessment

Get a writing score with feedback on grammar, tone, readability, and structural issues.

Citations for every source

Every matched source comes with a ready citation in APA, MLA, Chicago, Harvard or IEEE style — so you can credit it properly.

Reference Library

Upload your own documents to check against — detect overlap with previous submissions or internal content.


[Who it's for]

Built for everyone who cares about originality

Students

Check your essays, dissertation or thesis for accidental borrowing and missing citations, with every match next to its source. Your paper doesn’t go into any database.

Educators & Professors

Review student submissions at scale. See unattributed sources with direct links, and passages written in a machine-typical style — evidence to look at, not a verdict.

Researchers & Academics

Make sure your work is original before submitting to a journal. Compare the text with publications available online, check your citations and generate references in APA, MLA, Chicago, Harvard or IEEE.

Content Teams & Publishers

Verify freelancer deliverables, check blog posts for originality, and maintain brand integrity. Share reports with stakeholders via secure links — no account required.


[How we compare]

See the difference

A transparent look at how our platform stacks up against popular alternatives.

FeatureOur PlatformTurnitinCopyscapeGrammarly
AI Content Detection
Writing Quality Scoring
Source Comparison (side-by-side)Partial
Preview of the result without an account
Paper not added to a comparison database
PDF Report with QR verification
No institutional account needed

< 1 min

How long the preview usually takes

a long thesis — a few minutes

$0

The preview costs

no account, no card, no sign-up

0

Databases your paper goes into

it is never compared with other people’s work or used as a source in theirs

No copies

We don’t store the text of your paper

the file is deleted right after upload


[Frequently asked questions]

Everything you need to know

Is my document stored after the check?

No. The file is deleted right after upload, and we don’t store the text of your paper — not after the check and not in any database.

Do I need an account?

Not to see the result: the preview works without sign-up and without a card. You only need an account for the full report — your documents are then tied to your account so no one else can open them.

Will my document appear in plagiarism databases?

No. We don’t add it to any database other people’s work is compared against, it will never appear as a source in someone else’s check, and we don’t pass it on to any plagiarism-checking system.

What is my paper compared with?

The web. We pick characteristic phrases from the text, search for them on Google and compare the pages we find with your paper — including Wikipedia, scholarly articles and theses published in open university repositories. We have no access to closed databases such as Turnitin’s repository of submitted papers — so your university’s result may differ from ours.

How does AI content detection work?

Our engine analyzes text patterns characteristic of AI-generated content — uniform sentence structure, formulaic transitions, hedging language, and other statistical signatures. It detects content from ChatGPT, Claude, Gemini, and similar tools with high confidence.

How fast are the results?

The preview without an account is usually ready in under a minute. A full check of a long paper takes longer — usually a few minutes, and you can watch the progress the whole time.

What file formats are supported?

We support PDF, DOCX, DOC, ODT, RTF, TXT, and HTML formats, as well as URL input. You can also paste text directly. Documents up to 20MB are supported, with no minimum page count — just a minimum of 128 words.

Ready to verify your content?

Start checking documents in minutes. No credit card required.


Learn more about plagiarism detection and AI content analysis

What is plagiarism and why does it matter?

Plagiarism is the act of presenting someone else's work, ideas, or words as your own without proper attribution. In academic settings, it can result in failing grades, suspension, or expulsion. For professionals, it can lead to legal consequences, damaged reputations, and loss of credibility. Plagiarism isn't always intentional — improper paraphrasing, missing citations, or accidental overlap with existing sources are common causes. That's why running a plagiarism check before submission is essential for students, researchers, educators, and content creators alike.

How does plagiarism detection work?

Modern plagiarism detection works by extracting representative phrases from your document and searching them against a massive index of web pages, academic papers, journals, and published theses. Our platform uses n-gram fingerprinting with containment scoring — a technique that compares overlapping text segments between your document and potential sources. Unlike simple string matching, this approach catches paraphrased content, restructured sentences, and partial matches. Each found source is ranked by similarity, and matching passages are highlighted in your text with direct links to the original source for transparent verification.

Understanding AI content detection

AI-generated text from tools like ChatGPT, Claude, and Gemini exhibits characteristic patterns: uniform sentence structure, formulaic transitions, hedging language, and predictable paragraph organization. Our AI detection engine analyzes these statistical signatures across your document, splitting it into chunks and evaluating each for AI-generated patterns. Only detections with high confidence (above 70%) are reported, minimizing false positives. The result is a per-section breakdown showing which parts of your text were likely written by AI and which are original human writing.

Academic integrity in the age of AI

The rise of AI writing tools has made academic integrity more complex than ever. Students face new temptations, and educators need reliable tools to maintain fair standards. Our platform addresses both sides: students can check their work before submission to ensure it meets originality standards, while educators can verify submissions efficiently at scale. By combining plagiarism detection with AI content analysis, writing quality assessment, and transparent source comparison, we provide a comprehensive integrity solution that goes beyond simple percentage scores — giving both students and educators the context they need to make informed decisions.

Privacy and security in plagiarism checking

The most common question about plagiarism checkers: what happens to the paper after the check? Many systems add uploaded documents to their database — and your paper can then show up as a “source” in someone else’s check. That doesn’t happen here: the document isn’t added to any comparison database and isn’t compared with other people’s work. We don’t store its text either: the file is deleted right after upload. To find matches we send short phrases from the text to a search engine, and to detect AI we pass the text to a language-model provider — neither is a plagiarism database. The connection is encrypted (TLS).