Free and open source.
Use Decrumb for free. Inspect, modify, and share the code under the AGPL-3.0 license.
Browse the sourceDecrumb for Signal
Free, open-source link cleanup for Signal.
Decrumb automatically removes known tracking parameters from links you receive and saves clean copies to Note to Self. Ready to open or share, without editing URLs by hand.
Cleaned on your own machine.
No Decrumb account, analytics, or hosted message processing.
AGPL-3.0 licensed · Free to use, inspect, and modify.
For Mac, Raspberry Pi and Umbrel.
Requires an awake, online machine running Decrumb.
From Signal to Note to SelfIllustrated example
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Receive a link in Signal.
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Decrumb removes tracking tags.
On your machine.
Without opening the link. -
Get a clean copy in Note to Self.
Private, local processing.
Your machine cleans the links; Signal delivers them. No hosted message processing or analytics.
Read the privacy detailsAutomatic after setup.
Link your Signal account once. Eligible incoming links are cleaned while Decrumb is running.
How to get startedSimple setup
Connect once.
Keep using Signal.
Decrumb joins your existing Signal account as a linked device. Your normal Signal app stays on your phone.
Keep the host machine awake and online.Decrumb runs on your computer or server. Cleaning stops when that machine sleeps or goes offline.
Choose your platformInstall Decrumb.
Choose the Mac app, Pi service, or Umbrel dashboard. The Mac app includes everything it needs.
Scan the QR code.
On your phone, open Signal → Settings → Linked Devices. Scan Decrumb’s code to connect.
Open Note to Self.
Cleaning starts automatically. When Decrumb removes tracking tags, the clean copy appears in Note to Self.
About Decrumb
Common questions.
Does this stop all tracking?
No. Decrumb removes known tracking parameters from eligible links. Websites can still use other tracking methods. It doesn’t visit links, expand short URLs, or check whether a destination is safe.
Does Decrumb read my Signal messages?
It connects as an additional linked Signal device, so its Signal client can receive and decrypt your messages. Link cleanup happens on your machine. Account data and some queued link data are stored locally. See exactly what’s accessed and stored →
Will it change my chats or reply to friends?
Clean copies go only to your Note to Self. Decrumb never replies to contacts or groups, and it leaves the original conversation alone. Disappearing messages, view-once content, and spoilers are skipped.
Why not just delete everything after the question mark?
Some of that information makes the link work. In the example above, id=42 identifies the article. Decrumb removes known tracking tags and preserves the other parts. Recognized signed links are left untouched.
Can I choose what gets cleaned?
Yes. Choose sites, exclude others, or adjust which parameters are removed or kept. Preview changes locally before saving. You can also manage generated notes and enable optional commands from Note to Self. Explore the controls →