5 Ways to Clean Up Confluence Storage Without Breaking Anything

Confluence storage has a way of quietly filling up. Old attachments accumulate, duplicate files get uploaded, outdated page versions pile up — and suddenly your admins are getting storage warnings.

The tricky part is cleaning it up safely. Delete the wrong file and you break a page that someone still relies on. Here are five practical approaches to reclaim storage without causing collateral damage.

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1. Audit Attachments Before You Delete Anything

The first mistake most admins make is deleting files before understanding what's actually taking up space. Start with an audit.

Advanced Attachment Manager for Confluence gives you a searchable, filterable view of every attachment across your entire Confluence instance — sorted by file size, type, space, or date. You can instantly see:

• Which spaces are consuming the most storage
• Which file types are taking up the most space (PDFs? Videos? Zip files?)
• Which attachments are oldest and most likely outdated
• Which pages have the most attachments

This takes the guesswork out of cleanup. You know exactly what to target before you touch anything.

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2. Delete Old Attachment Versions

Every time someone re-uploads a file with the same name, Confluence keeps the previous version. Over time, old attachment versions accumulate invisibly — they don't show up in search but they count against your storage quota.

To clean up attachment versions:

• In standard Confluence: go to a page → Attachments → select an attachment → view history → delete old versions
• With Advanced Attachment Manager: identify pages with many attachment versions across the whole instance and bulk-delete old versions in one operation

This is often one of the biggest wins in a storage cleanup — old file versions can account for a surprising percentage of total usage.

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3. Find and Remove Duplicate Files

Teams frequently upload the same file multiple times — the same logo across ten different spaces, the same template ZIP uploaded by multiple people, the same diagram in slightly different versions.

To find duplicates:

1. Use Advanced Attachment Manager's filter by file type and size to spot files of identical size
2. Search by filename to find the same file uploaded across multiple spaces
3. Consolidate duplicates — keep one canonical version, update page references, delete the rest

For images specifically, bulk-replacing references and consolidating to a single version can reclaim significant space.

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4. Clean Up Orphaned Attachments

Orphaned attachments are files that were uploaded to a page and then the page content changed — the file is still there but no longer referenced in the page body. It shows in the attachments list but isn't embedded anywhere.

These are almost always safe to delete, but confirming manually across thousands of pages is impractical. Advanced Attachment Manager lets you filter for unreferenced attachments and review them in bulk — so you can clean them up with confidence rather than blindly deleting.

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5. Archive Old Spaces Instead of Letting Them Rot

One of the biggest contributors to storage bloat is spaces that are no longer active but never archived or cleaned up. Old project spaces, deprecated product docs, completed initiative wikis — they accumulate attachments and page versions indefinitely.

The right approach:

1. Identify inactive spaces — no edits in the last 6–12 months
2. Export the space to markdown or PDF if you want a permanent record (Markdown Exporter handles this)
3. Archive the space in Confluence — it becomes read-only and stops accumulating versions
4. Delete the space if you're confident nothing in it is needed

Archiving before deleting gives you a safety net. Export first if there's any doubt.

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Bulk Actions Save Hours

The reason storage cleanups get neglected is that the manual process is slow. Click into each page, open attachments, check each file, decide, delete. Multiply that by thousands of pages and it becomes a multi-day project.

Advanced Attachment Manager's bulk actions let you:

• Select multiple attachments across pages and spaces
• Delete, move, or download them in one operation
• Filter by type, size, date, or space to scope your cleanup precisely

What would take days manually takes an hour with the right tooling.

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Before You Delete Anything

A few rules of thumb:

Check if the file is referenced in a page body. Deleting an attachment that's embedded in a page will break the embed. Advanced Attachment Manager shows you where each attachment is used.

Start with the obvious. Target large files first — videos, zips, PDFs. A single 500MB video file does more damage to your quota than a thousand small images.

Use spaces to scope your cleanup. Don't try to clean the entire instance at once. Pick one or two high-storage spaces and clean those first.

Don't delete page versions from active pages. Version history is there for a reason. Focus on old attachment versions, not page versions.

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Getting Started

Advanced Attachment Manager for Confluence is available on the Atlassian Marketplace.

Full documentation at /docs/advanced-attachment-manager.

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Questions? Reach out via our support portal.