See what's filling your Microsoft storage, without your emails or files ever leaving your device. Scan locally, review first, and clean up only what you approve.
Free scan · No new account · Chrome extension
Storage Cleaner reviews Outlook categories including old mail with attachments, other inbox mail, large attachments, drafts with attachments, junk email, and deleted items; plus OneDrive categories including large files, large videos, duplicate files, screenshots, old file versions, and the OneDrive recycle bin.
One free scan reads across Outlook and OneDrive and ranks every cleanup by how much space it frees: large attachments, big files, duplicates, old versions, junk, and both recycle bins. You know what each cleanup is worth before you touch anything.
Large attachments are usually the biggest win, and they count against your Microsoft storage alongside OneDrive. Storage Cleaner finds them, plus years of promotions and junk, sorted by size and age. Picks move to Deleted Items first, reversible until you empty it. Flagged and important mail is never included.
Your largest files and videos, ranked by size. Exact duplicates matched by file content, with the original left in place. And old file versions that appear in no folder but still count. What you approve goes to the recycle bin, generally recoverable for up to 30 days.
Deleted isn't gone. Deleted Items and the OneDrive recycle bin keep counting against your storage until emptied, which is why you can delete hundreds of emails and still see 'storage full.' Emptying them is where the space comes back, so that permanent step is labeled and confirmed separately.
Storage Cleaner runs in your browser. Requests go directly between your browser and Microsoft, and your email and file contents are never uploaded to our servers.
Scanning and cleanup run locally, inside Chrome on your computer.
Nothing is moved or deleted without your approval; permanent steps are confirmed separately.
Flagged and important mail is excluded, protected senders and keywords are skipped, and personal-looking files are left unchecked.
Cleanups start in Deleted Items or the recycle bin, generally recoverable for up to 30 days.
A single delete is easy. Ten years of accumulation is the problem. Storage Cleaner turns it into one review list, and you approve every step.
“The Outlook.com inbox you've had since Hotmail was cool.”
“The OneDrive folder full of one-off exports.”
“The 20 MB attachment forwarded seventeen times.”
“The promo emails from a store you visited once.”
“The five copies of the same PDF, all called 'final'.”
“The 'storage almost full' email you keep ignoring.”
See what's using your Microsoft storage, review the biggest items first, and clean up only what you approve. Works in Chrome on your desktop.
