Add option to disable cloud providers (Google Drive, OneDrive, GitHub, GitLab)

[Demosai]

• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Is your feature request related to a problem? Please describe.
In enterprise environments where external cloud providers (Google Drive, OneDrive, GitHub, GitLab) are blocked, the Open / Save As dialog still shows these options. This causes repeated error pop-ups because the services cannot be reached.

Describe the solution you'd like
A simple way to disable specific cloud providers or disable all cloud integrations entirely. A config flag, JSON setting, or build-time toggle would be sufficient. Both for web (war) and application.

Describe alternatives you've considered

• Editing JS files manually — breaks on updates
• Blocking URLs at firewall level — still triggers UI errors
• Telling users to ignore the errors — not practical

Additional context
Enterprise environment with strict network controls and offline deployment requirements. Only local file storage is allowed; cloud options generate noise and confusion.

[draw-io-triage-bot]

👋 Thank you for opening this issue!

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Summary: The user requests a configuration option to disable cloud storage providers (Google Drive, OneDrive, GitHub, GitLab) in draw.io for enterprise environments where external services are blocked, leaving only local file storage available. Note: draw.io already supports some of this via URL parameters like ?mode=device or ?offline=1 for self-hosted deployments, and via the storageRecent, browser, and related configuration keys in the JSON editor configuration, which may address this need without a new feature.

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📝 Additional Information Needed

To help us investigate this more effectively, could you please provide:

• Are you deploying draw.io as the desktop application (Electron), the self-hosted web application, or within Confluence/Jira? The configuration approach differs significantly between these deployment modes.
• For the self-hosted web application, are you aware that draw.io can be configured via URL parameters or a PreConfig/PostConfig JavaScript block? For example, you can set urlParams.offline=1 or configure the application to disable specific integrations. Have you explored the configuration options documented at https://www.drawio.com/doc/faq/configure-diagram-editor ?
• Specifically, have you tried deploying with URL parameters like ?mode=device (which restricts to local device storage only) or ?storage=device to default to local storage and hide cloud options?
• For the desktop app, have you tried launching with the --no-sandbox or offline flags, or editing the configuration to restrict storage backends?

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