Is Copyscape Premium still worth it? We Tried 7 Online Plagiarism Checkers

While Copyscape seems to be the site to visit to check if your content has been removed or published elsewhere without permission, other tools are available that are just as good, or they claim to be.

We usually use Copyscape above SquadGuide, but as it turns out, they’re changing prices from April 2018. So instead of paying a flat rate of 5c for an article, you’ll now pay 3c per search for 200 words and an extra 1c for 100 words. This means that a 1200 word article will cost you $0.13, instead of $0.50. That’s more than 100% price increase for us. So we decided to look at some Copyscape alternatives to find out if Copyscape was still worth it.


To test these online plagiarism checkers, I will purposely write a paragraph with some parts of it copied from other websites, just to see our plagiarism checkers. how good i am.

To be consistent and fair to plagiarism checkers, I will create and use 5 plagiarized data samples from different well-known sources. The content has been subtly rewritten to fool these engines.

To make things simpler, I will post screenshots of just 1 of them. Service providers will be scored on a scale of 0 to 5, where the higher the better. So a rating of 4/5 means the plagiarism checker can catch 4 out of 5 samples for plagiarism.

Let’s find out what you’re paying for!

The text below is taken from The New York Times.

Facebook announced that it is rolling out a new centralized privacy settings page for users to control their privacy and security settings. Facebook has faced heat over how it handles users’ personal data. The new privacy system, which will roll out to Facebook users globally over the next few weeks, will let people change their privacy and security settings from one place instead of going through 15 links. different on siteā€¦.

As you can see, 44% of the text, 64 words, matched on Copyscape. at a higher level but you’d be surprised some tools will even miss that.

Check online plagiarism checker

Grammarly, a well-known name in the industry, also has a plagiarism checker. You can use the free version but after that you will be asked to sign up for a 7-day trial. Plans start at $29.99 a month. When I entered the above text, Grammarly was not satisfied with it.

First thing Grammarly was checked for plagiarism and it detected the source. I tried again with another template and Grammarly passed it while Copyscape didn’t.

Grammarly claims that they test texts against billions of pages! This is a pretty well known site and has received a lot of recognition over the past few years.

It seems that Grammarly is only good when your source is a large website that is not good enough.

Score: 3/5

A widely recommended and completely free online plagiarism checker. Duplichecker UI not the cleanest of them all and the homepage was plastered with ads. It allows you to search up to 1000 words per search.

This site claims to provide plagiarism checking service with 100% accuracy. During my testing, it didn’t detect anything. Even if you copy, paste 100% without any editing, the website does not work as advertised.

The site is free and used and recommended by a lot of writers and bloggers, which begs the question: how many of these writers are actually doing their jobs?

Score: 0/5

Small SEO Tools offers a number of tools that will be appreciated by both bloggers and webmasters such as image compression, DA checker, spell checker, backlink checker, etc. The list is quite long. They also have a plagiarism checker that is recommended in quite a few online reviews.

The results were bad. Again, I was disappointed to find that this tool gave my blatantly stolen content 100% clean content. I tried again, this time with no edit, and again got the same result.

This tool will also allow you to upload text from Google Drive and Dropbox. The word limit is 3000 per search. This makes me wonder how good their other tools are.

Score: 0/5

PaperRater is a cloud-based grammar and plagiarism checker with a free trial available to test the service. the free plan will allow you to check up to 5 pages 10 times a month. The premium version costs $7.95 and allows to check 20 pages with 25 plagiarism checks a month. The premium version also offers other features such as faster processing, an ad-free experience, and tailored text rendering.

Try the free version.

My work gets 100% uniqueness 3 out of 5 times with NYTimes articles getting a clean rating. I’m using the free version but wouldn’t recommend it to anyone based on personal experience.

Score: 3/5

PlagScan used by more than 1000 organizations and 1 million people, as confirmed by their website. I have no doubt because it is recommended on quite a few websites and blogs. They have a dedicated plan for large organizations.

PlagScan is one of those tools that works but not all the time. The NYTimes sample is given a 100% original score, but it works with 3 samples from relatively smaller locations. I am required to sign up for an account before I can download reports.

Once, it came back with a different source than the one I used, Times of India, one of the largest news websites based in India. And, it’s a copy job with no editing.

The free account will give you 20 credits or 20,000 free test words. Personal plans start at $5.99 for 26 sites after that. Exactly, it’s not cheap either.

Score: 3/5

Plagium will allow you 1 free search per day, then you will have to spend $0.04 for a quick search and $0.08 for a deep search. Anyone serious about plagiarism wants to do a deep dive. Honestly, I was confused by the plan. I used free search after signing up for a free account. Supports up to 5000 characters.

Plagium found another source, Wikipedia, instead of the original source. I have checked the source link, it is not clickable and throws an error and this page is a list of news published in 2007 while I am using the recent link. Plagium works but I’m not satisfied. It should have reverted to the original source I used. It only works twice, exactly.

Score: 2/5

7. UniCheck (formerly Untagged)

UniCheck has a clean interface unlike the rest of the plagiarism checkers I’ve tested. No ads to distract you. The free version of the online plagiarism checker will allow you to search 5 times, then prices start at $3 for 10 pages. Here are the results:

On one occasion, the tool was stuck at 30% for over half an hour with no way to abandon the process. At least that’s frustrating.

UniCheck returned to the source of the paper with some additional results. From the moment you set foot on the site, you get a professional feel. The user interface, results and registration process all work fine. The site is really slow and doesn’t match the speed and simplicity of Copyscape however. On the plus side, it works just as well as Copyscape where it matters.

Score: 5/5

Summary: Online Plagiarism Checker

Copyscape remains the best online plagiarism checker, a clean and efficient user interface, an ad-free interface, and excellent customer support. I know it because as a blogger it is part of my blogging toolkit.

I love UniCheck for the same reasons. It works as advertised, has a clean UI with no ads, and I’ve heard good things about their customer support from some of my writer friends. If you are working with thousands of pages, UniCheck will prove to be the cheaper solutionout that compromises quality.

If you’re working with long, 1000+ word articles, then UniCheck will save you money as their top plan offers 2000 pages for $140, or $0.07 per page. Copyscape, as we saw earlier, gets expensive with long works.

Above is information about Copyscape Premium Still Worth? We tried 7 online plagiarism checkers. If you have any questions, feel free to ask in a comment below. I am happy to help you.

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