Smart Scan
See exactly what's filling your storage.
One free scan reads across Outlook and OneDrive and sorts everything by how much space it frees, so you know where to start.
Your Microsoft storage is full. Clear it in minutes.
Outlook.com gives you 15 GB of mail and OneDrive gives you 5 GB — and attachments and forgotten files fill it fast. Storage Cleaner finds what's actually eating your space across Outlook and OneDrive, then clears it in a few clicks. Everything runs in your own browser. Nothing is ever uploaded.
Storage Cleaner is an independent Chrome extension built to work with Outlook and OneDrive, and is not affiliated with Microsoft.
What Storage Cleaner can do
Outlook Attachments
Clear the giant email attachments.
Old PDFs, videos, and photos buried in your inbox are the biggest, easiest wins. Review them by size and send the ones you pick to Deleted Items.
Promotions & Social
Sweep years of promo and social mail.
Newsletters, receipts, and notifications pile up for years. Group them by sender, unsubscribe in one click, and clear the rest in bulk.
OneDrive Large Files
Find the big files hiding in OneDrive.
Every file in OneDrive ranked largest first, so the videos and exports you forgot about are right at the top. Send the ones you choose to the recycle bin.
Duplicates
Delete the files you uploaded twice.
Storage Cleaner spots exact duplicates in OneDrive by file hash and keeps the original, so you reclaim space without losing a thing.
Old File Versions
Reclaim space from old file versions.
OneDrive quietly keeps every version of a file you edit, and it all counts against your quota. Storage Cleaner removes the old versions while the current file stays untouched.
Deleted Items & Recycle Bin
Empty what still counts against you.
Outlook's Deleted Items and the OneDrive recycle bin keep taking up quota until they're emptied. Clear them in a click, after you've had a look.
You're in Control
Protect what you never want touched.
Mark senders, keywords, and files as always-safe. Flagged and high-importance mail is protected by default, and reversible cleanups go to Deleted Items or the recycle bin first.
Your data stays in your Microsoft account.
Storage Cleaner runs in your browser, not on our servers.
Nothing is uploaded.
Your emails and files never leave your browser.
No new account needed.
Storage Cleaner connects with your own Microsoft sign-in.
You review before anything changes.
Most cleanups move items to Outlook's Deleted Items or the OneDrive recycle bin. Permanent actions are clearly labeled before you confirm.
Revoke anytime.
Disconnect at account.live.com/consent/Manage in one click.
Built for the storage you never have time to clean.
A single delete is easy. Thousands is the problem. Here's what Storage Cleaner clears out for you.
“The Outlook.com inbox you've had since Hotmail was cool.”
Outlook · ~4 GB
“The OneDrive folder full of one-off exports.”
OneDrive · ~3 GB
“The 20 MB attachment forwarded seventeen times.”
Outlook attachments · ~2 GB
“The 'storage almost full' email you keep ignoring.”
Microsoft account · over quota
“The five copies of the same PDF, all called 'final'.”
OneDrive duplicates · ~1 GB
“The promo emails from a store you visited once.”
Promotions · ~1 GB
Quick answers before you install.
Open it. Scan. Reclaim your space.
Free up your Microsoft storage across Outlook and OneDrive in a few clicks. Works in Chrome on desktop · Nothing is uploaded