Guides/Chromebook
How to encrypt files on a Chromebook (properly)
Chromebooks are excellent field devices with a mediocre local encryption story. Elba fixes that with a single HTML file that uses Chrome's own crypto to seal a folder.
Setup on ChromeOS
Download Elba.html to the Downloads folder (or a Linux container, if you use one). Double-click. Chrome opens it, and Elba can then point at any folder you have file-system access to.
Managed Chromebooks
On managed devices, admin policy may restrict the File System Access API. Ask your admin, or test on a personal profile first.
Questions people actually ask
- Does it work offline on a Chromebook?
- Yes. Turn off wifi and Elba still runs.
- Is Google looking at my files?
- No — Elba does the crypto in the browser locally; nothing is sent to Google or anyone else.
Take the island
Elba is one HTML file. It runs locally in a Chromium browser, seals a folder with AES-256-GCM, never phones home, and becomes open source on 1 January 2030.
- €49MMXXVI· now ·
- €39MMXXVII2027
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the price falls each year · free to all 1 jan 2030
pay once · no account · nothing leavesRelated guides
- A browser-based file encryption tool that never phones home
Elba is a browser-based file encryption tool: one HTML file, AES-256-GCM, zero network calls. Encrypt and decrypt inside a Chromium tab.
- Offline file encryption in a single HTML file
Elba is offline file encryption delivered as one HTML file. No installer, no internet, no telemetry — encrypt a folder with AES-256-GCM.
- How to encrypt files on a Mac without installing anything
No installer, no admin prompt, no App Store account. Elba is a single HTML file that runs in Chrome or Arc on macOS.