Managing global labels is done via the Apps menu on your Jira Cloud settings. Once the app has been installed, a new menu item called Manage Labels will appear. Click on it to get to the Manage Jira Labels page.
Checking Label Use on Your Jira Instance
Go to the global Manage Labels in your Jira instance. You should see something like this:
This is a list of all the Jira labels used in your instance. The second column shows you how many times a label has been used. Clicking on that link opens a new tab with a filter that shows all issues with that label in your project.
INFO
If a label is used on an issue that you do not have access to, it will not show up here and will not be counted.
Renaming a Jira Label
Renaming a label is done in place; just click on the label you want to rename, make a change and then click on the checkmark to the right of the input box. All issues with that label will be updated to use the new label name.
Merging Jira Labels
Sometimes, you will need to merge two labels. Typically, this happens when you notice different spellings for what should be the same label, like in the screenshot below:
Dealing with this situation is really easy with Project Labels: Simply rename the unwanted spellings to the spelling you would like to keep.
Deleting a Jira Label
Deleting a label is just as easy as you would expect. Simply click the trashcan icon next to the label you want to delete:
You will then be asked to confirm that you want the label deleted. Click Confirm to remove the label from all issues in your current project. Once a label has been deleted, it should no longer be suggested when adding a label.
CAUTION
There is no way to undo this operation. Once a label is gone, it's gone for good.
You can search labels, list them in one place, and find all issues by label.
You can list and administer all labels in Jira system wide affecting all projects.
To do so, go to Jira top navigation and find Manage Labels.
Please note that this feature needs admin or global permissions. If you do not see Manage Labels tab, it is likely that you do not have permission. Please ask your admin for access rights.
If you are admin or have correct permissions, it should look like below:
Need to search issues by label to see what in issues a label used? Just click on View filter, and it will show a Jira filter with all the issues under a label.
View all labels in one place (per project)
In order to view all labels and number of issues under a specific label, click on Manage Labels tab on left sidebar in your Jira project.
Find label usage and search all issues by label
You can sort labels by number of issues or alphabetically and quickly understand how they are used.
To find issues by label, click on view filter link, which will list all issues tagged with this label.
Search labels and filter issues by label