Reclaim the space
Signal won't let go.
Signal Desktop quietly keeps every photo, video and file you've ever received — often 10–30 GB. Sigweeper lets you review them and clear them. All on your Mac.
Signal never deletes what it downloads.
Every attachment is saved to disk and kept forever — there's no button in Signal to clear them. Over months of group chats and shared videos, it quietly becomes tens of gigabytes you can't easily see or reclaim.
Three simple steps.
No setup, no accounts. Open it and reclaim your space.
Scan
Sigweeper reads your own local Signal library and lists every stored attachment, biggest first.
Preview
See thumbnails, video frames and document peeks — decrypted locally — so you know what a file is before it goes.
Sweep
Select what you don't need and remove it. Your message history stays intact — only the heavy files on disk are gone.
Your messages never leave your Mac.
Sigweeper touches some of the most private data you own, so it's built to do the least possible. There's no networking code in it at all — nothing to phone home, no updates fetched, no analytics. Previews are decrypted in memory, and every deletion asks first.
- No network
- No telemetry
- Decrypted in memory
- You confirm every delete
Try Sigweeper
macOS on Apple Silicon · about 6 MB · nothing leaves your Mac.
Private betaFirst launch
This beta isn't notarized yet, so macOS asks before opening it:
- Open the .dmg and drag Sigweeper to Applications.
- Double-click it — macOS will pause the first time.
- Open System Settings → Privacy & Security, scroll down, click “Open Anyway.”
- Quit Signal Desktop before deleting (the app reminds you).
The shipping version will be Apple-notarized, so this step disappears.