Copyscape helps you defend your site against the threats of online plagiarism. The free Copyscape service allows you to easily search for plagiarism and identify instances of content theft.

The more powerful Premium service provides an unlimited number of professional grade searches, with more comprehensive coverage than the free service. The Copysentry service provides ongoing protection by automatically monitoring the web for copies of your pages and emailing you whenever new copies are found.

Introduction
What is Copyscape?
What is Copyscape used for?
How do I use Copyscape?

The Basics
How do I protect my content against online plagiarism?
How do I search for copies of content that is not online?
How can I check the originality of an article that was written for me?
What should I do if someone has stolen my content?
What languages does Copyscape work with?
Why does Copyscape show a limited number of results?
Why does Copyscape allow a limited number of searches for my site?
How do I use Copyscape for pages that require a login?
How can I tell Copyscape to skip parts of my web page?

Copyscape Premium
What is Copyscape Premium?
How much does Copyscape Premium cost?
Can I automatically query Copyscape Premium?
What is the difference between Copyscape Premium and the free Copyscape service?

Copysentry
What is Copysentry?
How do I protect my site with Copysentry?
How do I receive my Copysentry alerts?
How much does Copysentry cost?
Why do some pages count as more than one page?
How often does Copysentry check for copies?
Will Copysentry keep reporting the same page?
Why have I not received any Copysentry alerts?
How do I reduce the number of results reported by Copysentry?
How do I get fewer Copysentry reminders?

Copysentry for Dynamic Sites
Does Copysentry notice if my own content changes?
How does Automatic Link Protection work?
How do I stop protecting a specific web page?
Why do I no longer have enough protection for all my pages?

Your Copyscape Account
How do I ignore results from a particular site?
What if I have forgotten my username or password?
How do I change my password or email address?
How do I print an invoice for my payments?
Can I purchase Copyscape services using PayPal?

More about Copyscape
What are the terms and conditions of use?
What is Copyscape's privacy policy?
What is Copyscape's relationship with Google?
How can I contact Copyscape?

What is Copyscape?

Copyscape is the leading solution on the web for detecting online plagiarism. Copyscape lets you easily identify sites that have copied your content without permission, as well as those who are quoting your site.

What is Copyscape used for?

You can use Copyscape to protect your corporate website, online publication, blog, marketing materials, or any other online materials which are valuable to you. Read these testimonials to learn how others are using Copyscape to meet their needs.

How do I use Copyscape?

The free Copyscape service is very easy to use. Simply enter your web address and Copyscape will instantly scan the entire Web for copies of your content. Copyscape shows you the top results for your search, and you can also click on a result to see a word-by-word comparison with the content on your site. In this comparison, colors are used to highlight blocks of text that match the text on your site. Each matching block is highlighted with a different color.

How do I protect my content against online plagiarism?

Place a free Copyscape Banner on each of your web pages to warn potential plagiarists that they will be found, and deter them from stealing your work. More tips for protection are described here.

The Copysentry service automatically protects the content on your site by regularly scanning the Web for copies and emailing you whenever new copies appear.

How do I search for copies of content that is not online?

The Copyscape Premium service allows you to check for copies of your offline content. Simply copy and paste your text directly into the search box and Copyscape Premium searches for copies of the text online.

How can I check the originality of an article that was written for me?

Copyscape Premium allows you to easily check whether a new article has been copied from the web. Simply copy and paste the text of the article into the search box and Copyscape Premium searches for copies of the text online.

What should I do if someone has stolen my content?

In defending your rights online against plagiarists, it's important to be both vigilant and proactive. Copyscape's Guide to Online Plagiarism includes basic easy steps you can take to prevent and respond to website plagiarism.

What languages does Copyscape work with?

Copyscape can handle web pages written in all common world languages. If you're having a problem using Copyscape with your web page, please ensure you have set the page's character encoding correctly.

Why does Copyscape show a limited number of results?

Copyscape's operations take up significant bandwidth and computation resources, so we are only able to provide a limited number of results in the free service. If you would like to see more, sign up for Copyscape Premium, which reports many more results than the free Copyscape service.

Why does Copyscape allow a limited number of searches for my site?

Copyscape's operations take up significant bandwidth and computation resources, so we are only able to provide a limited number of searches in the free service. If you would like to perform more than 10 searches for your website per month, sign up for Copyscape Premium, which allows thousands of searches per month. You may see a message indicating that this limit has been reached even though you have not performed too many searches on a certain site - this simply means another person has already exceeded the limit for this site. In such a case, you may use Copyscape on another site, or sign up for a Premium account.

How do I use Copyscape for pages that require a login?

There are three possible solutions to this problem. The simplest solution is to configure your web server to allow all requests from the Copyscape servers, i.e. from IP addresses 212.100.254.105 and 212.100.239.219. Alternatively, create a copy of your website which is not password protected in a secret directory on your server, and point Copyscape to the pages in that secret directory. The final option is to set up your web pages so that a special secret parameter on the URL can bypass the password protection. For example ?bypass=305156913 could be added to the URL.

How can I tell Copyscape to skip parts of my web page?

You may instruct Copyscape to refrain from checking for copies of certain parts of your web page. This is done by adding a <!--copyscapeskip--> tag at the beginning of the section you want excluded, and adding a <!--/copyscapeskip--> tag at the end of that section. Note: This skipping works in one direction only - it will not prevent Copyscape from finding this content on your page when searching for copies of other pages.

What is Copyscape Premium?

Copyscape Premium provides an unlimited number of professional grade plagiarism searches, with more thorough and comprehensive coverage than the free Copyscape service. You may also search for copies of offline content by copying and pasting your text into the search box. Copyscape Premium provides integrated case tracking to manage and track your responses to multiple instances of plagiarism of your online content.

How much does Copyscape Premium cost?

Each Premium search costs $0.05. Search credits are purchased in advance and can be bought as and when they are required.

Can I automatically query Copyscape Premium?

Using the Copyscape Premium API, you can automatically query the Copyscape service and receive results in XML format. Each API request is billed in the same way as a search performed through the regular Copyscape Premium interface. In order to use the API, simply sign up for Copyscape Premium, click on 'Premium API' in the 'Copyscape Premium' menu at the top, and then click on the 'Activate API Access' button. Complete instructions will then be provided.

What is the difference between Copyscape Premium and the free Copyscape service?

Copyscape Premium allows you to perform thousands of searches per month, instead of only 10 with the free Copyscape service. The Premium service provides an unlimited number of results for each search, instead of only 10 with the free service. Unlike the free service, Copyscape Premium also allows you to search for copies of offline content by copying and pasting your text into the search box. Premium also provides integrated tracking of multiple cases of plagiarism of your online content, and allows specific sites to be ignored.

What is Copysentry?

Copysentry provides automatic protection of your entire website by regularly monitoring the Web for new copies and emailing you whenever new copies appear.

How do I protect my site with Copysentry?

To start protecting your site, simply sign up for Copysentry and enter your web site details. Your automatic protection can be up and running in minutes.

How do I receive my Copysentry alerts?

Your Copysentry alerts are sent by email to the address you specify. You can choose whether you want to receive your emails in HTML or Plain Text format by logging in and clicking 'User Settings' in the 'Copysentry' menu. You can also view your previous Copysentry results by logging in and clicking 'Browse Results' in the 'Copysentry' menu.

How much does Copysentry cost?

The Copysentry Standard service checks for copies of your pages every week. It costs $4.95 per month for up to 10 pages on your site, and $0.25/month for each additional page up to 100 pages. The Copysentry Professional service checks for copies of your pages every day, and includes expert technical support. It costs $19.95 per month for up to 10 pages on your site, and $1/month for each additional page up to 100 pages. More information is available here. To protect sites with more than 100 pages, please contact us.

How often does Copysentry scan for copies?

The Copysentry Professional service scans for copies of your content every day. The Copysentry Standard service scans every week. To change the frequency of your scans, log in and click on 'User Settings' in the 'Copysentry' menu.

Will Copysentry keep reporting the same page?

Copysentry only reports a page which has copied your content the first time it is seen. To view the archive of pages which were found in the past, log in to your Copysentry account and click 'Browse Results' in the 'Copysentry' menu.

How do I reduce the number of results reported?

If Copysentry is reporting too many or too few results, you change your settings to only report pages whose text matches at least 1, 2, 3 or 4 sentences of your content. Log in to your Copysentry account and click on 'User Settings' in the 'Copysentry' menu.

How do I get fewer Copysentry reminders?

To receive fewer Copysentry reminder emails, click on the link that appears at the top of your Copysentry alert email, change the reminder frequency and click 'Confirm'.

Why have I not received any Copysentry alert emails?

Ensure that you have entered a valid email address in the 'User Settings', accessible through the 'Copysentry' menu in your Copysentry account. If you are using a spam filter or challenge service, ensure that you have added 'copysentry@copyscape.com' to your list of permitted senders.

Why do some pages count as more than one page?

Longer pages mean more possibilities for plagiarism. To ensure a consistently high level of protection, your Copysentry service devotes a full set of resources to every 2,000 words on a page. Any pages longer than this are counted as more than one page.

Does Copysentry notice if my own content changes?

Yes, the latest version of your content is automatically retrieved from your website before every plagiarism scan performed by Copysentry. If one of your pages has moved or is inaccessible, you will automatically be notified by email.

How does Automatic Link Protection work?

When automatic link protection is turned on for a page, Copysentry will automatically protect all pages on your site which are linked from that page at the time of searching.

If the structure of your site changes regularly, you can use this feature to have Copysentry automatically protect only the pages containing your more recent and relevant content. This feature is especially useful for news sites, corporate press pages and blogs.

You can also choose to have specific linked pages excluded from automatic protection, or to exclude pages whose URL matches a pattern you specify.

How do I stop protecting a specific web page?

To stop protecting a specific page, click 'Stop Protecting' next to the page in a Copysentry alert email (HTML format only), or go to 'My Pages' in your Copysentry account, click 'Done' and then 'Exclude' by the relevant page.

Why do I no longer have enough protection for all my pages?

As a result of automatic link protection, you may now need to protect more pages than the number covered by the Copysentry service you originally purchased.

You can upgrade your protection easily by clicking the link in the email, or logging in to your Copysentry account. When upgrading, you will automatically be credited for the remaining time in your current Copysentry subscription.

If you do not wish to purchase additional protection, you can choose instead to stop protecting some pages.

How do I ignore results from a particular site?

Add the site to the list of sites to be ignored in the 'User Settings' of your Copyscape account, accessible through the 'Copysentry' or 'Copyscape Premium' menu. If you are using Copysentry, you can also click 'ignore site' next to a result from that site in a Copysentry alert email (HTML format only).

This feature is useful if there are other sites on the Web legitimately mirroring some of your content, or if your site is hosted on more than one URL.

What if I have forgotten my username or password?

When you log in, click on 'I forgot my password' to have your password emailed to you. If you are using Copysentry, your username appears at the bottom of each Copysentry email.

How do I change my password or email address?

Log in to your account, then click on 'User Settings' in the 'Copysentry' or 'Copyscape Premium' menu. You can then click on 'Change Password' to change your password. You can also type in a new email address in the area provided, and click 'Save Changes'.

How do I print an invoice for my payments?

Click on 'View Payments' in the 'Copysentry' or 'Copyscape Premium' menu of your Copyscape account to see a list of all your payments. Then click on 'View Invoice' next to the payment for which you would like an invoice. You may then print out the invoice shown.

Can I purchase Copyscape services using PayPal?

Unfortunately at this time we do not accept payment via PayPal. If possible please use a Visa or MasterCard credit card instead.

What are the terms and conditions of use?

Click to see the official Terms and Conditions of Use. Copyscape's services are provided "as is" with no warranties whatsoever. Use of Copyscape is entirely at your own risk. Copyscape disclaims any and all warranties for all services and information provided by Copyscape.

What is Copyscape's privacy policy?

Click to see the official Privacy Policy. Copyscape respects the privacy of its users and takes the privacy of all user information seriously.

What is Copyscape's relationship with Google?

Copyscape is unaffiliated with Google, although we are in regular contact with them. Copyscape uses Google's Web APIs to perform its searches. Google has generously provided us with a high-capacity Web APIs key for use with the Google Alert and Copyscape sites.

How can I contact Copyscape?

Send in your comments or suggestions using the Copyscape feedback form. Your views are always welcome.