Help Center


How do I use the Tree Consistency Checker on my family site?

To run the Consistency Checker on your online family site, please do as follows:

1. Log into your family site.

2. Move your mouse cursor over the "Family tree' tab and click on 'More...'":

3. Select "Consistency checker": 


When you visit the Tree Checker, it automatically scans the family tree on your family site, displaying a progress bar as it goes along. It will tell you how much additional time is required to complete scanning:


You can stop the scan at any time by clicking the X icon in  the top right corner.

To select a different tree, click on the drop-down option in the upper right corner and select the tree to be scanned:

Note: The scanning process may take a while the first time you use the tool depending on the size of your tree, but so subsequent visits to the page will be much faster and will load the previous report, unless you decide to re-run the checks.

The Consistency Checker displays a list of all the issues it found, organized by category. At the top of the list, you’ll see how many issues have been found in total, and the number of issues found in each category is also displayed.


1. Reviewing the issues

Issues are grouped into three different categories. Errors are shown first, then Warnings, and lastly Notices.

  • Errors indicate an issue that is obviously incorrect. They are shown with a red exclamation mark icon. These are the most important issues that should be dealt with first. Below is an example:


  • Warnings indicate a case where the data seems unusual and may be incorrect. They are shown with a circular orange exclamation mark icon. See examples below:


You can examine each of these cases and determine if they are erroneous or not. The threshold of warnings like these is configurable, and you can change it through the Settings, as explained in the following article: What are the personalizing options of the online Tree Checker?

  • Notices indicate a potential problem but the likelihood of a mistake is smaller. They are shown with a gray square icon. The example below is a group of notices for siblings in the same family who have the same first name. This is only a Notice, since, depending on the culture, it can be very common for siblings to have the same given name.

For every issue reported, the following information is displayed:

  • Personal photo (portrait) of the person involved. If the issue concerns 2 siblings or 2 spouses, then 2 portraits are displayed. Move the mouse over a portrait to see the person’s name, relationship to you, and year of birth and death.

  • Description of the issue: in the description, names of people are links that go to the relevant editing page that allow fixing the issue.

  • Tip: a recommendation about how to correct the issue, with useful links that are underlined.

  • Comment: Sometimes there is a comment with additional information.

  • Photo: When a photo is involved.

2. Fixing the issues

Every name in the list (as in the example marked below in orange) is also a link that opens a page for editing that individual in a separate browser window, allowing you to fix data quickly. You can also use the convenient links in the Tip to go straight to the right place to fix the data.


Some issues listed can be fixed directly from the Consistency Checker, with the click of a green quick-fix button. For example, if you received a warning that your great-grandmother is not marked as deceased in the family and is rather old (111 years old), you are given the option to quickly correct it. Move the mouse over the issue, and a green quick-fix button will appear offering you to mark her as deceased in a single click:


For many issues, there may be more than one way to correct it based on your own judgement. This is often the case for issues affecting more than one person in the tree. For example, an error may indicate that a child’s birth date is incorrect, or that the parent’s birth date is incorrect, or both. These issues cannot be corrected with a simple click of a button. In such cases, click on the names of the people involved and you’ll be taken to their family tree profiles where you can manually correct the issue.

In addition to the Tree Checker page, for any individual in your tree for whom consistency issues were found, a new icon is added on the right side of a person’s profile page:



3. Additional features

You can ignore a specific issue if you think there is no error in your data, by moving the mouse over the issue. A small ‘X’ will appear in the top right corner. Click the ‘X’ to ignore the issue

Note: Ignored issues will not be reported again.

In addition, you will see  other options in the top right corner, allowing you to recalculate the inconsistencies, print the entire report or adjust the settings:


Note: The Consistency Checker for online family trees is a paid feature, available without limit to users with a PremiumPlus or Complete subscription.