Skip to content
Home » News » 8 Free Online Plagiarism Checkers for Publishers

8 Free Online Plagiarism Checkers for Publishers

A Look into the Best Plagiarism Tools

Free online plagiarism checkers are always welcome among writers, bloggers, teachers, and just about anyone that manages written content. Although the subject of “duplicate content” carries some misinformation and myths (mainly relating to search engine penalties) it is good practice to ensure your articles are not being used elsewhere without your consent.

Let’s take a brief look at some popular, free plagiarism tools available for all your publishing needs. While some of these are limited to free users (with more features reserved for paying customers), they are still useful if you only need them several times per month.

1. Plagiarisma

Plagiarisma is among the most popular, free online plagiarism checkers out there. With support for over 190 languages, this versatile tool is available for Windows, Android, and has extensions for web browsers such as FireFox and Chrome.

You can insert page URLs for Plagiarisma to check for duplicate content, and upload files in most standard document formats.

2. Dupli Checker

Free plagiarism tools are sometimes bloated with many disorganized options, advertisements, and/or the results are not very easy to understand. Dupli Checker is the opposite of this, as it provides a very clean interface and friendly options.

You can either paste your text on the web-based field or upload your documents. However, unregistered users are limited to only one plagiarism check per day as of this writing.

3. Small SEO Tools’ Plagiarism Checker

This free plagiarism tool provides you with several sample texts, which is a nice touch if you wish to put it to the test first. In addition, you can exclude a specific URL in the event you had published your own content on other websites, ideal primarily for content syndicators.

The interface works similarly to other tools, allowing you to paste or upload documents for analysis.

4. Copyleaks

Copyleaks is easy to use and offers a completely welcoming interface, which earns some bonus points in my opinion. However, its main checking ability is currently limited to inserting a page URL at this point in time.

Other than that, Copyleaks provides an API that allows you to implement the tool into your own website or service.

5. Plagium

Plagium is pretty advanced at what it does, with the ability to analyze standard web content as well as news sources and social media networks. It also includes some nice relevancy-related options to optimize the tool’s sensitivity (search) level.

The free version analyzes up to 5,000 characters (about 2,500 words) as of this writing.

6. PlagScan

PlagScan is just one of several free online plagiarism checkers that comes with many options right out of the box. Upload documents from Word, HTML or standard text files up to 300MB or 1,000 words (as of January 2016).

The results appear with the most relevant items toward the top, and you should probably ignore the ones at the bottom (considering the tool’s sensitivity level might deliver some false results). Great choice if you are not a fan of the other tools for any given reason.

7. The Pensters

The Pensters plagiarism tool supports English and Spanish, and users can scan for duplicate content up to five times per month. This is ideal for casual writers and bloggers.

Which One is the Best?

free online plagiarism toolIn my opinion, all of the above are great free plagiarism checkers. The one you select will heavily depend on its user interface and other personal touches.

That being said, it is tough to measure just how accurate these are when compared to one another. If you are unsure about any of them, I would alternatively suggest a premium Grammarly account, which appears to have a great reputation among publishers.

8. Unplag

Unplag is a new plagiarism checker that is targeted at students, but it can also be used by online publishers. It lets you scan your papers against Bing and Yahoo Web indexes in real time. You can also compare your paper with any other documents in your account using a Docs vs Docs check. It works with .doc, .docx, .rtf, .txt, .odt, .html or .pdf files.

Final Thoughts

Have you tried any of these duplicate content tools? Which one do you prefer and why? Feel free to leave your comment below.

Also don’t miss:
How to Make Sure You Don’t Unintentionally Commit Plagiarism