See where your SharePoint storage went.
A free Windows tool that turns the SharePoint Online “storage black box” into a clear, drilldown-able map. Sites, libraries, file types, age, access patterns - all in one place.
Read-only access · No vendor lock-in · Forever free
Sound familiar?
SharePoint Online is a storage black box.
Limited visibility
Microsoft's admin centre only goes so far. You can't see what's actually taking up space inside each library.
Hidden giants
There are huge files in your tenant right now. You don't know which ones. You don't know which sites.
Decision paralysis
Without insights, you can't decide what to archive, delete or migrate. So you do nothing, and the bill keeps growing.
Features
Everything an admin needs. Nothing they don't.
Document Library View
Drill into any SharePoint document library - see storage usage, file composition and access patterns at the library level.
Site-level overview
Bird's-eye view across your whole SharePoint Online environment. Spot rapidly-growing sites before they become storage emergencies.
File browser
Browse, sort and inspect SharePoint files without leaving the tool. Optimised for admins, not casual users.
Top 100 files
Surface the largest files in your tenant in one click. Easy targets for archiving, deletion or relocation.
File-type breakdown
Understand the makeup of your storage - what's PDFs, what's media, what's old Office macros nobody opens.
Light + Deep scan
Quick checks when you need a rough number, or detailed deep scans when you're building a business case.
Comprehensive reporting
Detailed reports across sites, libraries, file counts and inactive content age brackets - board-meeting ready.
Read-only and secure
Operates with read-only access against SharePoint. Your data stays untouched while you analyse it.
Inside the tool
Drill from tenant to a single file.
Document Library View
Per-library breakdowns of storage, file composition and user activity.
File browser
Browse and sort SharePoint files without leaving the tool.
Tenant overview
The strategic dashboard - file types, sizes and distribution across the whole tenant.
Charts and analytics
Top sites by size, top file types by storage - all visual, all interactive.
Used together
Storage Explorer shows you what's there. Squirrel does something about it.
Most enterprises use SharePoint Storage Explorer during the assessment phase to find the inactive content hogging space, then deploy Squirrel to archive it automatically into Azure Blob Storage. Same visibility, ongoing action - and SharePoint storage costs drop 60-85%.
FAQ
Things people ask.
Is SharePoint Storage Explorer really free?
Does it work on large SharePoint Online tenants?
Is it safe? What permissions does it need?
How does it relate to Squirrel?
Can it find inactive or old files?
Find out what's eating your tenant.
Download SharePoint Storage Explorer, point it at your tenant, run a scan. In under an hour you'll know more about your SharePoint storage than your admin centre will ever tell you.
Free download
Get SharePoint Storage Explorer.
Drop in your details and we'll email you the installer link. No newsletter spam, no obligation, no follow-up sales sequence.