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Free Paper Checker to Catch Errors Before Submission

Check grammar, plagiarism, AI-generated text, and reference quality in essays, theses, and papers with one document checker.
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Trusted by universities and publishers across the world
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Loved by
5M+
researchers
Checked
780K+
documents for plagiarism
Scanned
1M+
documents for AI writing patterns
Trusted by
1,500+
leading journals worldwide

Four Checks. One Upload. Zero Guesswork.

Paperpal's paper checker covers every submission-critical review in one seamless workflow.

Plagiarism Check: Guard Your Originality

Check your paper against 99B+ web pages and 200M+ open access articles. See exactly what a reviewer might flag, before you submit.

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AI Detection: Identify AI Writing Patterns

Spot text that may read as AI-generated. Get sentence-level insights, review, and refine AI patterns to restore your voice, so you always submit with confidence.

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Reference Check: Verify Citation Quality

Find missing, inconsistent, or AI-hallucinated citations in your document. The citation checker evaluates sources across 9+ parameters for accuracy and completeness.

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Grammar Check: Polish Text to Perfection

Polish your essay, thesis, or research paper with a grammar checker built for academic text. Improve clarity, readability, and tone in one pass.

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One Document Checker, Built for Everyone in Academia

From coursework to journal submissions, use paper checker to catch errors early.
Students
Students

Catch issues before your instructor does

Use as an essay checker to review structure, clarity, and academic tone
Use as an essay checker to review structure, clarity, and academic tone
Run a free paper check on coursework, reports, thesis and dissertations
Run a free paper check on coursework, reports, thesis and dissertations
Get feedback from a paper grader that checks the way instructors do
Get feedback from a paper grader that checks the way instructors do
Researchers
Researchers

Run every check a journal reviewer would:

Use the complete document checker to verify originality and flag AI content
Use the complete document checker to verify originality and flag AI content
Catch missing or inconsistent references with our trusted citations checker
Catch missing or inconsistent references with our trusted citations checker
Polish language and tone with a writing reviewer; no separate tool needed
Polish language and tone with a writing reviewer; no separate tool needed
Educators
Educators

Get consistent, academic-grade feedback:

Use Paperpal as an AI grader to assess writing quality and originality
Use Paperpal as an AI grader to assess writing quality and originality
Identify recurring issues quickly with the reliable AI paper reviewer
Identify recurring issues quickly with the reliable AI paper reviewer
Save review time without compromising feedback depth or quality
Save review time without compromising feedback depth or quality
Professionals
Professionals

Ensure submission-ready academic writing:

Use the document checker for book chapters, review articles, and reports
Use the document checker for book chapters, review articles, and reports
Check for plagiarism and source accuracy before your work is submitted
Check for plagiarism and source accuracy before your work is submitted
Refine language, tone, and clarity with our comprehensive writing reviewer
Refine language, tone, and clarity with our comprehensive writing reviewer

Paperpal's Document Checker Catches What Generic AI Tools Miss

Generic AI tools cover either one of grammar, plagiarism, AI detection. Paperpal goes beyond to cover every submission check for students and researchers.

Paperpal
SciSpace
Jenni
Academic-grade language & grammar check
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Limited
Limited
Plagiarism check
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AI content detection
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Citation and reference checks
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Partial
Partial
Full submission readiness workflow
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Partial
Partial
Disclaimer: Based on independent research; features may change. Please verify all details with the respective tools/companies before proceeding.

Built to Check Any Academic Document

Review grammar, originality, AI content, and reference accuracy. Get the checks that matter most for your writing.
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Essays

Use our AI essay grader to sharpen structure, fix grammar, and verify originality before you submit your work for grading.
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Research Papers

Identify accidental plagiarism, missed citations and references, AI writing , and more with the AI paper checker and improve your final draft before submission.
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Theses & Dissertations

Turn to Paperpal’s complete paper checker to review long-form academic writing — get your references, originality, and language reviewed end to end.
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Assignments

Every assignment is assessed against strict academic standards. Use this paper grader to check writing quality, tone, and structure before your instructor catches it.

Run a Free Check

How to Use Paperpal’s Document Checker?

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Upload your document

Essays, research papers, theses, dissertations — Word, PDF, and more supported.

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Select your pre-submission check

Run all four assessments at once or choose the specific check you need.

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Review your results

Scan clear, inline suggestions across each check, with context for every item flagged.

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Fix, download, submit

Resolve issues directly in Paperpal and download your submission-ready draft.

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Paperpal Works Where You Write

No new tabs. No copy-pasting. Just seamless writing support, right where you are.

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200K+ students write better without switching tools

Students and Researchers ❤️ Paperpal’s Paper Checker

"I have tried a lot of AIs and by far Paperpal has given me what I prefer— high-quality academic writing. It makes fact-checking easy and offers the right writing and editing support needed in the academic domain."

 Jaclyn Azuela
Jaclyn Azuela
Professor, University of the Immaculate Conception, Philippines

"Paperpal doesn't just edit my writing; it boosts my confidence. With Paperpal, I feel assured that my arguments are well-structured, my language is clear and concise, and my paper meets the high standards of academic publishing."

Darryl Sutphin
Darryl Sutphin
Graduate Student, Georgia Institute of Technology, USA

Frequently Asked Questions

Paperpal’s paper checker or Document Health Check reviews your academic writing for language and grammar, plagiarism, AI-generated text, and citation and reference quality before you submit.

Unlike general writing tools, Paperpal is purpose-built for academic writing and helps researchers, students, and faculty meet the highest quality standards.
Upload your paper to the document checker and run one check or all four with just one click. Paperpal consolidates multiple checks into a single submission-readiness workflow, saving you time while eliminating the need for multiple tools.

Your Next Submission Deserves a Final Check

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