Do you need to manage labels in Jira? Do you need to find out duplicates? Do you need to rename or , merge, delete labels entirely? Do you want to get overview of all labels used in your project? With Label Manager & Editor for Jira you can do all of above and much more.
...
If you haven't installed, please install from Atlassian Marketplace here: https://marketplace.atlassian.com/apps/1221542
User Guides
1.1 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.
...
1.2 View all labels in one place (globally)
Sometimes you might want to administer labels 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:
...
2.1 View all issues under a label, rename or delete a label
Once in overview page, click on label name. It will show all issues under the label and option to change name or delete the label entirely.
...
Please note: Changing name or deleting a label is limited to current project. If you are not able to do such actions, it is likely that you are in different project. Just switch the project and you should be able to use those features. This is to prevent users accidentally deleting or renaming labels in other projectsin global mode, administrative actions (rename, delete etc.) will affect all projects. If you do not want this, use per project label management.
2.2 Merge two or more labels
Merging labels is also possible albeit using renaming feature. For example, if you have three labels named backend, back-end and Backend and want to keep only the last one i.e Backend, you can rename first two labels to Backend. This way, those labels will be merged.