Trello.exe

Trello Desktop App (Electron)

Application ProcessSafeProductivity

CPU Usage

2-15%

Memory

120-420 MB

Location

AppData\Local\Programs\Trello

Publisher

Atlassian Pty Ltd

Quick Answer

Trello.exe is safe. It's the desktop Electron app for Trello, used to run boards offline and sync changes when online.

Is it a Virus?

✔ NO - Safe

Should be in C:\Program Files\Trello or C:\Users\<User>\AppData\Local\Programs\Trello

Warning

Many processes normal

Electron apps spawn multiple processes; Trello may show several trello.exe instances

Can I Disable?

✔ YES

Close the app from the system tray or Task Manager; disable startup from Windows settings if desired

What is Trello.exe?

Trello.exe is the executable for the Trello Desktop App, built on Electron. The desktop client provides offline board access, drag-and-drop card management, and real-time synchronization with your Trello workspace when online. It runs as a separate process on Windows.

Trello uses an Electron multi-process architecture to separate UI, rendering, and background services for stability. Each window spawns a renderer process for boards and cards; the main process coordinates actions and resource usage.

Quick Fact: Trello’s desktop app mirrors the web experience with offline storage and local caching for smoother board access.

Types of Trello Processes

Main Process: Orchestrates the app, menus, and global events (1 instance)
Renderer Process: Renders boards and cards per window (multiple instances)
GPU Process: Renders graphics and UI acceleration
Worker Process: Handles background sync and network requests
Update Process: Manages auto-update checks and application updates
Extension/Plugin Process: Runs Trello-specific browser-like extensions or integrations

Is trello.exe Safe?

Yes, trello.exe is Safe when it's the legitimate file from Atlassian downloaded from official sources (trello.com or trusted app stores).

Is trello.exe a Virus or Malware?

The real trello.exe is NOT a virus. Malware may masquerade with similar names; verify digital signature and location.

How to Tell if trello.exe is Legitimate or Malware

File Location:: Must be in C:\Program Files\Trello\Trello.exe or C:\Program Files (x86)\Trello\Trello.exe. Any Trello.exe elsewhere is suspicious.
Digital Signature:: Right-click Trello.exe → Properties → Digital Signatures. Should show "Atlassian Pty Ltd" as the signer.
Resource Usage:: Normal Trello usage uses modest CPU and memory; extreme spikes outside of app activity should prompt malware checks.
Behavior:: Trello should only run when you actively use the app or when startup is enabled. Unexpected background activity may indicate malware.

Red Flags: If trello.exe is located in unusual folders (Temp, AppData\Roaming, or System32), runs when Trello isn't open, has no digital signature, or uses persistent resources, scan with antivirus software. Be wary of similarly-named files.

Why Is trello.exe Running on My PC?

trello.exe runs when you launch the Trello Desktop App or when Trello is configured to run in the background for sync and notifications.

Reasons it's running:

Active Board Access: You're actively using Trello; the app spawns processes for each board window and UI layer.
Background Sync: Trello syncs cards, comments, and attachments in the background to keep data current.
Startup Launch: Trello may be set to start automatically when Windows starts.
Offline Caching: Local cache enables offline board access; it runs background tasks to maintain data consistency.
Notifications: System notifications and webhooks may keep Trello processes alive to deliver updates.

Can I Disable or Remove trello.exe?

Yes, you can disable trello.exe. It's safe to close Trello when not in use, and you can uninstall it or disable startup if desired.

How to Stop trello.exe

End Windows Task: Open Task Manager (Ctrl+Shift+Esc), locate Trello.exe, and End Task for active windows.
Close from System Tray: Right-click Trello icon in the system tray and choose Exit.
Prevent Startup: Task Manager → Startup tab → Disable Trello
Disable Background Sync: Trello Settings → Settings → Disable background sync
Uninstall Trello: Windows Settings → Apps → Trello → Uninstall

How to Uninstall Trello

✔ Windows Settings → Apps → Apps & Features → Trello → Uninstall
✔ Control Panel → Programs → Uninstall a program → Trello → Uninstall
✔ Use the official Trello web app as an alternative

Common Problems: High CPU or Memory Usage

If trello.exe is consuming excessive resources:

Common Causes & Solutions

Large number of boards or open cards: Close unused boards, reduce open cards, and collapse lists to lessen render load.
Background Sync heavy activity: Check network status and pause or adjust sync frequency in Trello settings.
Outdated Trello app: Update Trello to the latest version from its updater or official site.
Conflicting browser extensions: Disable extensions that interfere with Trello; check for Electron conflicts.
Corrupted local cache: Clear Trello cache or data folder; sign back in to re-sync.
Hardware acceleration issues: Disable hardware acceleration in Trello settings or Windows graphics settings.

Quick Fixes:
1. Quick Fixes:
2. 1. Open Trello Task Manager (Ctrl+Shift+Esc) and identify heavy boards
3. Clear Trello cache via Settings → Data and cache
4. Disable unnecessary Trello Power-Ups and extensions
5. Update Trello to the latest version
6. Disable hardware acceleration in Trello if available

Frequently Asked Questions

Is trello.exe a virus?

No, the legitimate trello.exe from Atlassian is not a virus. Verify the file path is in C:\Program Files\Trello or C:\Program Files (x86)\Trello and that the digital signature shows Atlassian Pty Ltd.

Why is trello.exe using so much CPU?

High CPU can occur when many boards are open or heavy cards are rendered. Use Trello Task Manager, close unused boards, and ensure Trello is updated.

Can I delete trello.exe?

Yes, you can uninstall Trello via Windows Settings or Control Panel. Data may be stored in your Trello account; local cache is removed on uninstall.

Can I disable trello.exe?

Yes, you can close the app or disable startup and background sync in Trello settings to prevent it from running automatically.

Why does Trello start at startup?

If Trello is configured to run on startup, it will launch when Windows starts. Disable it in Task Manager → Startup tab.

How do I reduce Trello's memory usage?

Close unused boards, sign out and re-sign in to clear cached state, update Trello, and disable unnecessary Power-Ups or extensions.