Roughly the size of a small photograph. It fits on any USB stick.

Can I email it to myself?

Yes — it's a plain HTML file. Email, cloud drive, USB, all fine.

Why one-file software is the quiet revolution

Single-file software is a program that fits in one file with no installer, no update service, and no external dependencies. You copy it, you keep it, you run it in five years. Elba is single-file on purpose.

What one file gives you

Portability: it works on any machine with a Chromium browser.

Longevity: nothing to install means nothing to break when the OS updates.

Sovereignty: you own the copy, not a licence key to a service.

What it costs

Some features are off the table — background sync, cross-device push, live collaboration. Elba is comfortable with that trade because those features would require a server, and a server would defeat the purpose.

Questions people actually ask

How big is the file?: Roughly the size of a small photograph. It fits on any USB stick.
Can I email it to myself?: Yes — it's a plain HTML file. Email, cloud drive, USB, all fine.

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
€29MMXXVIII2028
€19MMXXIX2029
FreeMMXXX2030

the price falls each year · free to all 1 jan 2030

Take the island — €49

pay once · no account · nothing leaves

Related guides

Single-HTML-file encryption: why one file is the feature
One HTML file, one folder, one password. Why Elba's single-file design is a security property, not a limitation.
A portable encryption tool that fits on a USB drive
Elba runs from a USB stick with no install. One HTML file, one launcher, one folder — sealed with AES-256-GCM wherever you plug it in.