Plagiarism Checker
Check your text, URL, or uploaded document for duplicate content and plagiarism across the entire web. Get an instant uniqueness score with source attribution — free, no sign-up required.
Paste (Ctrl + V) your article below then click Check for Plagiarism!
Paste your URL here
Content is extracted from the URL and loaded into the text area for checking.
Select a file (.docx/.txt)
Supported: .docx and .txt files. Content is loaded automatically for checking.
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Who Uses a Plagiarism Checker?
About Plagiarism Checker
What Is a Plagiarism Checker?
A plagiarism checker compares your text against content already published online to find matching or near-matching passages, then reports what percentage of your content is unique versus potentially copied. Our Plagiarism Checker is built for students, bloggers, and content teams who need to confirm originality before publishing or submitting work.
How Our Plagiarism Checker Works
The tool breaks your text into segments and searches for matches against indexed web content. Matched sentences are highlighted along with the source URL they were found at, so you can see exactly what needs to be rewritten or cited — not just an overall percentage with no explanation.
How to Use the Plagiarism Checker
- Paste your text into the input box, or upload a document
- Click Check Plagiarism
- Review the percentage of unique vs. matched content
- Click any highlighted sentence to see its matching source
- Rewrite or cite flagged passages as needed
Key Features
- Source-level matching — see exactly which URL a flagged sentence matches
- Overall uniqueness percentage — a quick pass/fail signal before you dig into details
- Works on drafts of any length — from a short blog post to a full research paper
- No installation required — runs entirely in your browser
Who Uses This Tool
Students check assignments and papers before submission to stay within their institution's plagiarism tolerance. Bloggers and content writers verify originality before publishing, since duplicate content can hurt search rankings. Teachers spot-check submitted work for copied passages. Editors run a final originality pass before content goes live.
Frequently Asked Questions
Does a plagiarism check guarantee my content will rank well?
No — originality is one of many ranking factors. A clean plagiarism report doesn't replace good content quality, structure, and relevance.
What counts as an acceptable plagiarism percentage?
This varies by institution or publisher; many academic settings use thresholds between 10-15%, but you should always follow your specific guidelines.
Will properly cited quotes be flagged?
Directly quoted text can still be flagged as a text match even when properly cited — that's expected and not a problem, since the match reflects the quote itself.
Is my submitted text published anywhere?
No, your text is checked against existing indexed content and is not published as a result of using this tool.
Free Plagiarism Checker vs Turnitin vs Copyscape
| Feature | SEO Stack Tools | Turnitin | Copyscape |
|---|---|---|---|
| Price | Free | $3–$5/submission | $0.03/page |
| Account required | No | Yes (institutional) | Yes |
| Best for | Web content, blogs, quick checks | Academic papers | Web duplicate detection |
| URL checking | Yes | No | Yes (premium) |
| File upload | .docx, .txt | Most formats | Premium only |
| Results speed | Instant | Minutes | Instant |
How to Reduce Plagiarism in Your Writing
- Cite your sources — always attribute quotes, statistics, and ideas to their original author with proper citation format (APA, MLA, Chicago).
- Paraphrase correctly — rewrite ideas entirely in your own words and sentence structure; changing a few words from the original still counts as plagiarism.
- Use quotation marks — when you must include an exact phrase, put it in quotes and add a citation immediately after.
- Take original notes — when researching, write notes in your own words from the start rather than copying passages to rephrase later.
- Run a check before submitting — use this tool to scan your text and review any highlighted matches before publishing or submitting your work.