How to Choose Plagiarism Checker: The Complete Guide 2019

The free solutions are not suitable for constant use, as they’re usually worse at detecting plagiarism and have a number of limitations. The paid solutions seem to be all equally perfect, but in fact, examination shows that for the same price you can get vastly different results.

Best plagiarism checkers:

• Comparative chart ↓
• 1. Quetext ↓
• 2. The Pensters ↓
• 3. Small SEO Tools ↓
• 4. Search Engine Reports ↓
• 5. Plagramme ↓
• 6. PlagScan ↓
• 7. PaperRater ↓
• 8. Noplag ↓
• 9. Copyscape ↓
• 10. Unicheck ↓
• 11. Plagiarism Software ↓
• 12. PlagTracker ↓
• 13. Plagiarisma ↓
• 14. Grammarly ↓
• 15. Turnitin 

The table below lets you overview competitors’ capabilities and price at a glance.. The quality rate in the third column is based on a practical test, in which I challenged the tools with different duplicates. While some of the tools successfully passed the test, recognizing cheating and accurately tracing the original sources, others were not so precise. In brief, to get the highest accuracy at no cost, go for The Pensters. This free solution partially detected duplicates in some of the sample texts I submitted. In turn, Grammarly proved to be the most (the truly) accurate tool offering professional paid solutions.

You can learn more details about each checker, their unique features and pricing policies in the overview below the table.

Best plagiarism checkers

Acceptable formats	Features	Quality of examination & Price
1. Quetext ↓
The Copy & Paste option only.	Multiple language support	1/5 Free
2. The Pensters ↓
Copy and paste	Plagiarism percentage Citation generator	3/5 Free
3. Small SEO Tools ↓
DOCX and TXT	Plagiarism percentage Downloadable report URL exclusion	1/5 Free
4. Search Engine Reports ↓
DOCX and TXT	Plagiarism percentage	1/5 Free
5. Plagramme ↓
DOC and DOCX for free version users HTML, PDF, RTF, TXT, EBOOK and other formats are available for licensed users through customization.	Plagiarism percentage Multiple language support Character replacement detection Downloadable report Integration via API and Moodle LMS Plugin Bad citation and paraphrase detection Online correction tool	4/5 The basic verification is free. The cost for additional features starts from $0.35 per page.
6. PlagScan ↓
DOC, DOCX, PDF, TXT, ODT, RTF, PPT, ZIP, URL, and others	Plagiarism percentage Customizable and downloadable report API integration Citation, reference and URL exclusion Doc vs doc comparison Multiple document check Email notifications Web import (e.g., from Dropbox)	4/5 Private users buy scanning packages: $5.99 for 6,500 words, $12.99 for 25,000 words, $24.99 for 62,500 words, $49.99 for 150,000 words. Organization can acquire subscription plans at $1.99/month or more.
7. PaperRater ↓
DOC, DOCX, TXT, ODT, RTF are available for users with a premium membership	Plagiarism percentage Automatic grammar, spelling and punctuation proofreader Writing suggestions Automatic paper grading	2/5 Premium plans: $14.95/month, $7.95/month if paid annually.
8. Noplag ↓
DOC, DOCX, RTF, TXT, ODT, HTML, PDF	Plagiarism percentage Customizable and downloadable report Citation and reference exclusion Doc vs doc comparison	3/5 Free when checking against a custom library. The cost for using ready databases starts from $0.04 per page.
9. Copyscape ↓
Users of the free versions can submit a URL (of HTML pages only). Premium account owners can also paste in text.	API Integration Doc vs doc comparison Batch Search for checking an entire website	3/5 Basic verification is free. The cost for Copyscape Premium starts from $0.05 per verification with a minimum purchase of 100 credits ($5).
10. Unicheck ↓
DOC, DOCX, RTF, TXT, ODT, HTML, PDF, ZIP	Plagiarism percentage Multiple language support Downloadable report Integration via API, LTI and Moodle LMS Plugin Doc vs doc comparison Multiple document check	4/5 $9.97/month, $20.95/three months, $59.88/year for individual clients
11. Plagiarism Software ↓
DOC, TXT and URL	Plagiarism percentage URL exclusion Keyword detection	3/5 First trial check is free. Premium plans: $10/month, $20/month, $30/month.
12. PlagTracker ↓
Copy & Paste option for the free version. The Premium account owners can also upload files in DOC, DOCX and TXT.	Plagiarism percentage Automated grammar proofreader Multiple language support Reference exclusion Downloadable report API Integration	2/5 Basic verification is free. Premium plans: $14.99/month.
13. Plagiarisma ↓
TXT, HTML, RTF, DOC, DOCX, XLS, XLSX, PDF, ODT, EPUB, FB2, PDB, and URL	Plagiarism percentage Multiple language support Downloadable report Automatic article rewriter Spell checker	1/5 The basic verification is free. Premium plans: $5/day, $25/month, $35/three months, $65/six months.
14. Grammarly ↓
DOC, DOCX, ODT, TXT, and RTF	Plagiarism percentage Downloadable report Automatic grammar, spelling and punctuation proofreader Synonym suggestions Citation generator	5/5 $29.95/month, $19.98/month (if paid $59.95 for three months), $11.66/month (if paid $139.95/year.
15. Turnitin ↓
DOC, DOCX, TXT, PDF, RTF, PS, WPD, HTML, HTM	Plagiarism percentage Customizable and downloadable report Citation and reference exclusion Doc vs doc comparison Feedback option	4/5 Pricing should be discussed directly with the Turnitin sales managers