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FREE PREVIEW SCAN · NO SIGNUP NEEDED

See what your professor's detector will see — before they do.

Run your paper through a detector before your professor does. If something reads as machine-written (AI), you’ll know which sentences and why — while you can still do something about it. Plagiarism and grammar come with it.

Up to 6,000 words · minimum 100 characters to scan
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or · PDF, .docx or .txt · up to 5 MB
Working in Google Docs? Download it as Word (.docx), or just paste your text.
Up to 6,000 words · Results in under a minute
Your paper stays private · Never shared with other users · Never added to plagiarism databases
My Final Paper.docx · Scan Results
Final Paper.docx · 2,140 words Scan complete PDF
AI AI TEXT 3 passages
P PLAGIARISM 0 issues
Aa GRAMMAR 8 issues
READS AS YOURS 75 sentences
Quality Management in the Restaurant Industry

The restaurant industry has experienced significant transformation in recent decades. In order to create a competitive advantage, companies must improve the quality of their products and services while reducing costs.

This means companies are required to develop and implement quality management systems that follow international standards.

Therefore, companies must develop quality control systems that are able to identify the required quality standards that apply to their products.

Another important aspect that companies must take into consideration refers to the evaluation of these control systems, ensuring continuous improvement.

ALL AI PLG GRM
3
passages worth
a second look
0Plagiarism
8Grammar
Results · 11
1 AI-like passage
2 Passive voice
3 AI-like passage
Scan complete under a minute
3 AI passages found See which sentences, and why
11 fixes suggested With AI rewrites
The part nobody else publishes

Built not to flag your own writing.

We tested our AI detection against real student papers written before AI writing tools existed. It flagged about one in a hundred.

Formal academic writing shouldn't get you accused. Careful prose, passive constructions, a tidy thesis paragraph — that is what good coursework looks like, and it is exactly what trips a lot of detectors. Ours is built to tell the difference.

Written it yourself and still worried? Run it. If something does flag, you'll see exactly what and can judge it for yourself.

~1% of genuine papers flagged

Measured against real coursework written before AI writing tools were available — papers we know a person wrote. Roughly one document in a hundred raised anything at all.

No detector is certain, ours included. We show you passages worth a second look, never a verdict on you. What you do with them is your call.

One upload, three checks
All three checks run on the same pass.
🔎 Leads every scan
AI Text Detection
Sentence-level, not a verdict. See which passages read as machine-written and why — so you can judge them yourself.
📋
Plagiarism
Matched against academic journals, student papers and the open web, with the source and a link.
Grammar
Subject–verb agreement, comma splices, dangling modifiers, run-ons.
How it works

From paper to report in under a minute.

Paste or upload your draft, let TextChecker do its work, then fix what it finds. No app to install, no learning curve.

📄
Drop .docx, .pdf or .txt
or paste your text
1
Upload or paste
A Word document, a PDF, or plain text straight from your editor. We accept up to 6,000 words per scan.
AI ✓ Plagiarism Grammar
2
Three checks, one pass
All three checks run on the same pass. Watch it progress or close the tab and come back — the report waits for you.
3
AI passages
2
Sources
11
Writing fixes
3
Read what it found
Every flagged passage shows the issue, the reason, and a suggested rewrite you can paste in. Export to PDF any time.
Your report

Sentences, not a verdict.

We don't hand you one number for your whole paper. A score can't tell you what to fix, and it can't tell you whether it's wrong about you. You get the specific passages instead — and the reasoning behind each one.

  • Every flagged passage says why it was flagged — the pattern, in plain language
  • Filter by category so you can work through one issue at a time
  • Resolve as you go — the report updates in real time
  • Export the whole thing to PDF if you want a record
Final Paper.docx 2,140 WORDS · 78 SENTENCES
3
Passages worth a second look
2
Matched sources
11
Grammar & spelling
75
Sentences reading as yours

No single score. You're looking at counts and the sentences behind them, so you can judge each one yourself rather than argue with a percentage.

Matched passage 1 OF 2
Companies must develop quality control systems that are able to identify the required quality standards that apply to their products, the resources that are necessary to meet those standards, and the strategies that must be used in this direction.
📕 Quality Management Systems in International Business Hermansen, R. · Journal of Operations Management, 2019 88% match
Plagiarism

Find exact matches. With sources.

When something in your paper matches an existing source, TextChecker tells you exactly where — the publication, the author, the degree of overlap, and a link to the original. Cite it or rewrite it before you submit.

  • Cross-referenced against our library of 136,000+ papers, plus academic journals, student papers, and the open web
  • Every match shows the source title, author and how closely it overlaps
  • Catches verbatim copies and patchwork paraphrasing alike
  • Your paper is never added to anyone's database, including ours
Rewrites

Don't just find issues — fix them.

For every grammar issue, TextChecker proposes a specific rewrite that addresses the issue while keeping your meaning and your voice. No more guessing at what's wrong — just paste in the fix and keep writing.

  • One click applies any suggestion
  • Each rewrite explains what changed and why, so you learn it once
  • Works on grammar, passive voice and awkward phrasing
  • You decide what to take. Nothing changes unless you apply it
⚑ Flagged · passive voice

These companies are required to develop and implement quality management systems that follow international standards.

✓ Suggested rewrite

Companies must develop and implement quality management systems that meet international standards.

Converted to the active voice and replaced "follow" with the stronger "meet".

How it compares

One tool. All the checks.

Grammarly handles grammar. Turnitin handles plagiarism, if your school pays for it — and you don't get to see the result first. TextChecker does both, plus AI detection, flow and rewrites, before you submit.

Feature Grammarly Turnitin TextChecker
Grammar & spelling
Plagiarism detection
AI text detection
Shows you which sentencesInstructor view only
Explains why it flagged
AI-powered rewritesBasic
You can run it yourselfInstitution only
CostSold separatelyVia your schoolIncluded in your plan

Stop second-guessing. Run the check.

See what a detector sees in your own writing — while there's still time to do something about it. The passage count is free.

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Got questions

The ones students actually ask

TextChecker isn't sold separately — it's included with every PaperDue subscription, alongside the AI writing assistant, 134,000+ paper examples, and every writing tool. Scan a paper to see what it catches. The complete report — which sentences were flagged, and why — comes with any plan.
One scan = one document up to 6,000 words. Each scan runs AI text, plagiarism, and grammar — including spelling, punctuation and flow — and produces one full report. Re-scanning the same document counts as a new scan, so make your fixes first before re-running. Anonymous scans show how many passages read as machine-written; seeing which sentences, and why, comes with any plan.
Most scans finish in under a minute. Longer documents, or papers with many sources, take proportionally longer. You can leave the tab — progress is saved to your dashboard, and you'll get an email when it's done.
Three checks: plagiarism (against our library of 136,000+ papers, plus academic journals, student papers, and the open web), AI-generated text detection that highlights the specific sentences, grammar, spelling, punctuation, flow and clarity (passive voice, sentence variety, readability), and AI-powered rewrite suggestions for grammar issues.
We use a dedicated AI-detection service and show you the specific sentences it identifies, rather than one score for the whole paper. Formal academic writing can read as machine-written, so treat the highlights as passages worth re-reading, not a verdict. Every scan shows the count; a plan shows the sentences.
Yes. Your documents are private to your account, never shared with other users, and never added to plagiarism databases that other users scan against. We delete your uploaded file as soon as we've read it; your scan reports stay in your dashboard for easy access, and you can remove any of them anytime.
TextChecker uses similar techniques to Turnitin (cross-referencing major academic databases plus the open web) but operates independently. Results won't be identical, but issues flagged by TextChecker are typically the same ones Turnitin flags. Use TextChecker before submitting so you can fix issues before your professor's Turnitin scan sees them.