Categories & Tags

Categories & Tags

Organize your reference library using WordPress’s built-in taxonomy system. Categories provide hierarchical organization while tags offer flat, keyword-based grouping.

Categories vs. Tags

FeatureCategoriesTags
StructureHierarchical (parent/child)Flat list
Use forBroad topics, disciplinesSpecific keywords
Best for“What type is this?”“What is this about?”
ExampleBiology > Ecology > Marineclimate, coral-reefs, temperature

Using Categories

Creating Categories

  1. Go to References > Categories
  2. Enter category name
  3. Optional: Set parent category
  4. Optional: Add description
  5. Click Add New Category

Or create while editing a reference:

  1. In the Categories panel, click Add New Category
  2. Enter the name
  3. Optionally select a parent

Category Structure Examples

By Discipline:

Science
├── Biology
│   ├── Ecology
│   └── Genetics
├── Chemistry
└── Physics

Social Sciences
├── Psychology
└── Sociology

By Project:

Thesis
├── Chapter 1 - Introduction
├── Chapter 2 - Literature Review
└── Chapter 3 - Methods

Blog Posts
└── 2024 Articles

By Status:

To Read
Currently Reading
Read
├── Highly Relevant
└── Background

Assigning Categories

Single reference:

  1. Edit the reference
  2. Check boxes in Categories panel
  3. Save

Bulk assignment:

  1. Go to References > All References
  2. Check multiple references
  3. Bulk Actions > Edit
  4. Apply
  5. Select categories
  6. Update

Category Archive Pages

If public references are enabled, each category has an archive:

yoursite.com/reference-category/ecology/

Lists all references in that category.

Using Tags

Creating Tags

Tags are created as you use them:

  1. Edit a reference
  2. In the Tags panel, type tag names
  3. Separate multiple tags with commas
  4. Press Enter or click Add

Or manage all tags at References > Tags.

Tag Strategies

Methodology tags:

  • qualitative
  • quantitative
  • meta-analysis
  • case-study
  • longitudinal

Topic tags:

  • climate-change
  • machine-learning
  • urban-planning

Source type tags:

  • primary-source
  • review-article
  • gray-literature

Personal tags:

  • to-cite
  • key-paper
  • background

Tag Best Practices

  1. Be consistent – Use the same tag for the same concept
  2. Use lowercase – Avoid duplicates from capitalization
  3. Use hyphensclimate-change not climate change
  4. Start specific – You can always merge tags later
  5. Review periodically – Consolidate similar tags

Syncing with Reference Managers

Zotero Collections → Categories

When syncing with Zotero:

  • Zotero collections become WordPress categories
  • Subcollections become child categories
  • Collection structure is preserved

Zotero Tags → WordPress Tags

  • Zotero tags sync to WordPress tags
  • Automatic tag matching (same name = same tag)
  • New Zotero tags create new WordPress tags

Mendeley Folders → Categories

Similar mapping for Mendeley folders and tags.

Filtering by Category/Tag

In Admin

  1. Go to References > All References
  2. Use the Category dropdown filter
  3. Or click category/tag links on individual references

On Frontend

If enabled, visitors can:

  • Browse category archives
  • Filter by tag
  • See category/tag clouds

Managing Categories

Editing Categories

  1. Go to References > Categories
  2. Hover over category, click Edit
  3. Change name, slug, parent, or description
  4. Update

Merging Categories

To combine two categories:

  1. Edit all references in Category B
  2. Reassign to Category A
  3. Delete Category B

Deleting Categories

  1. Go to References > Categories
  2. Hover over category, click Delete
  3. Confirm

Note: Deleting a category doesn’t delete references – they become uncategorized.

Managing Tags

Editing Tags

  1. Go to References > Tags
  2. Hover over tag, click Edit
  3. Change name or slug
  4. Update

Merging Tags

To combine similar tags:

  1. Edit references with Tag B
  2. Add Tag A, remove Tag B
  3. Delete Tag B

Popular Tags

The tag management page shows:

  • Most used tags
  • Tag counts
  • Quick edit options

Category/Tag Display

In Bibliography

Group bibliography entries by category:

  1. In Bibliography block settings
  2. Set Grouping to “Category”

In Archives

Category and tag archives show:

  • Category/tag name and description
  • List of references
  • Filter options

In Single References

Each reference page displays:

  • Assigned categories
  • Assigned tags
  • Links to archives

Permissions

Control who can manage categories and tags:

  • Administrators – Full access
  • Editors – Can create and assign
  • Authors – Can assign existing only
  • Contributors – No category/tag access

Configure in References > Settings > Permissions.

Troubleshooting

Category not appearing

  • Check it’s not empty (no references assigned)
  • Verify it’s published, not draft
  • Check parent category exists

Tags duplicating

  • Variations in spelling/capitalization create duplicates
  • Merge manually through tag management

Sync not matching

  • Zotero collection names must match category names exactly
  • Check sync settings for mapping options

Next Steps

Last updated: January 31, 2026