Plagiarism Checker
Check your essay, paper, or article for plagiarism. See your plagiarism percentage, matching sources, and highlighted passages in seconds.
TRUSTED BY TOP WRITERS EVERYWHERE
Free plagiarism checker
Check for plagiarism online with an accurate plagiarism checker.
Verva's plagiarism checker compares your text with content across the web and finds passages that match other sources. You get a clear plagiarism percentage, a list of matching sources, and the exact passages highlighted in your text.
Use it to catch missing citations, forgotten quotation marks, or passages that stayed too close to a source, so you can fix them before your teacher, editor, or client sees your work.
Plagiarism
Plagiarism checker overview
What Is a Plagiarism Checker?
A plagiarism checker, also called a plagiarism detector, is a tool that compares your writing with existing sources to find text that has been copied. It searches for passages that appear somewhere else, shows where they come from, and calculates how much of your text matches.
Plagiarism means using someone else's words or ideas without giving them credit. It can be on purpose, but it often happens by accident, when a note loses its source or a paraphrase stays too close to the original. A plagiarism check helps you find these passages before anyone else does.
Types of plagiarism
Direct plagiarism
Copying a passage word for word from a source and presenting it as your own writing, without quotation marks or a citation.
Mosaic plagiarism
Mixing copied phrases into your own sentences, or swapping a few words while keeping the source's structure.
Missing quotation marks
Citing a source but using its exact wording without quotation marks, so the words look like your own.
Missing citations
Using facts, ideas, or wording from a source without crediting it, even when the rest of the paper is original.
Self-plagiarism
Reusing your own published or previously submitted work without permission or a citation.
Accidental plagiarism
Forgetting where a note came from, or staying too close to a source while taking notes. A plagiarism check catches it.
Simple workflow
How to Check for Plagiarism
Checking your work for plagiarism takes less than a minute. Paste your text, run the check, and review every match before you submit.
Paste your text
Add your essay, research paper, article, or report.
Check for plagiarism
Click Scan text to search the web for passages that match yours.
Review your plagiarism percentage
See how much of your text matches online sources.
Open the matching sources
See each source and the passages it shares with your text.
Cite or revise
Cite the source, add quotation marks, or rewrite it in your own words.
How plagiarism detection works
How Does a Plagiarism Checker Work?
A plagiarism checker compares your writing with existing content and flags text that also appears somewhere else. Verva's plagiarism detector shows you exactly what matched, where it came from, and how much of your text it covers.
Compares your writing
Your text is compared with websites, news, encyclopedias, research papers, and more.
Flags matching text
Text that also appears in another source is flagged, and common phrases are ignored.
Links every source
Each match links to the page it came from, so you can review it yourself.
Scores your text
You get a plagiarism percentage that shows how much of your text matches.
Features
Everything You Need to Check Your Work for Plagiarism
Plagiarism percentage
A clear score that shows how much of your text matches online sources.
Matching sources
Every source is listed with a link and the share of your text it matches.
Highlighted passages
Matches are highlighted in your text. Select a source to see only its parts.
Quotes excluded
Quoted text and your reference list don't count toward your score.
Web and research papers
Checks websites, news, encyclopedias, study guides, and research papers.
100+ languages
Check writing in 100+ languages, including Spanish, French, and Chinese.
Results in seconds
Your results are ready in seconds, so you can fix your writing before you submit it.
Private and secure
Your text stays private and is never shared with other plagiarism checkers.
What it checks
Built to Find Plagiarized Text
Plagiarized text can come from anywhere: a blog post, a Wikipedia article, a news story, a study guide, or a research paper. Verva checks your writing against all of them at once and shows you exactly where each match comes from.
That makes it easy to catch a missing citation in an essay, a borrowed paragraph in a report, or reused content from a freelancer before it's published. Use it for school, work, or publishing, whether you're checking your own writing or someone else's.
Checked sources
Use cases
Who Should Use a Plagiarism Checker?
Students
Use Verva as a plagiarism checker for essays, papers, and assignments, and find missing citations or quotation marks before you submit.
Teachers and educators
Check student work for passages copied from websites, study guides, and essay sites, with links to every matching source.
Researchers and academics
Make sure papers, theses, and literature reviews quote and cite earlier work correctly before you submit them.
Writers and bloggers
Check articles and blog posts for unintentional copying, and make sure your writing is original before you publish.
Marketers and SEO teams
Check website copy and content from freelancers for duplicate content that's already published elsewhere online.
Professionals
Check reports, proposals, and cover letters for copied text before you send them to a client or employer.
Know the difference
Plagiarism Checker vs. AI Detector
A plagiarism checker finds text that already exists somewhere else. An AI detector checks whether text was written by AI tools like ChatGPT.
The two don't overlap. AI-generated text is usually new, so it can pass a plagiarism check and still be flagged as AI, and copied text can be written by a person and pass an AI check.
Many schools and publishers now check for both, so it's worth checking your writing for plagiarism and AI before you submit it.
Writing tips
How to Avoid Plagiarism
A few simple habits keep your writing original and make sure every source gets credit.
- 1
Quote exact wording
When you use a source's exact words, put them in quotation marks and add a citation, so readers know where they came from.
- 2
Paraphrase in your own words
Read the passage, close the source, and explain the idea your own way. Then cite the source to give credit for the original idea.
- 3
Cite every source
Use the citation style your teacher or publisher asks for, like APA, MLA, or Chicago, and include a reference list.
- 4
Know what's common knowledge
Widely known facts usually don't need a citation, but statistics, research findings, and other people's ideas should be cited.
- 5
Use AI-generated writing carefully
AI tools can repeat wording from their sources, so rewrite AI drafts in your own words or use Verva's AI humanizer.
- 6
Check before you submit
Run your final draft through a plagiarism checker and Verva's AI detector, then fix anything they catch and check again.