Files

How Truzme keeps your work automatically, how to connect a .truzme file so it saves there too, and when your work can disappear.

Last updated 2026-09-22

Quickstart

1. Just start building — Truzme saves your work in the browser automagically. No button, no account.
2. Want it saved to a real file instead? Open the file indicator next to the logo and choose Save to file… — it saves your model to a .truzme file.
3. Opening an existing .truzme file instead just loads it — it won't write back to it until you either hit Save yourself, or flip on Autosave from the same indicator.
4. On a school or shared computer? Your work may be wiped when you sign out. What to do

What it is

Your model can live in two places: Local, in the browser, or a File, a real .truzme file on your computer.

The file indicator next to the logo always shows which one you're in, with Save, Save as…, and a way back to Local always one click away.

Keyboard

• Ctrl+S (⌘S on a Mac) does what saving means where you are: saves to your file, or opens Fork to file… for an example. In Local there's nothing to do, so it tells you "Saved in this browser" and offers Save to file.
• Ctrl+Shift+S (⌘⇧S) always saves to a new file, like Save as…

Opened an example instead of a project? See the Examples guide — it's a third, temporary place, with its own way of forking to File or Local.

When your work can disappear

Truzme has no servers and no accounts, so your work only exists where you saved it. That's the privacy upside. The downside is that if that place gets wiped, Truzme can't bring it back.

Rule of thumb: Local is a convenience, a file is a save. If the work matters, it should be in a file somewhere that doesn't get wiped.

School computers

Keep your work somewhere that isn't deleted at sign-out. Pick one:

1. Save to a drive that isn't deleted. Choose Save to file… from the file indicator next to the logo, and in the save window pick a USB stick, a school network drive, or Google Drive. In Firefox or Safari the file goes to Downloads, so move it there right away. Next time, open it from there with Open file…. On a Chromebook, see Using Truzme on a Chromebook.
2. Email the file to yourself. Choose Save to file…, then attach the .truzme file to an email to yourself. Next time, download it and open it with Open file…
3. Email the truss as text. No time for a file? Select everything (Ctrl+A), copy (Ctrl+C) and paste it into an email to yourself. Next time, copy it and paste it onto the canvas. This keeps the truss, but not display settings or background images. See Sharing.

Permission

Browsers ask for permission before Truzme can save to a file — when you save, or when you turn autosave on, and sometimes again later (for example after a refresh). A warning on the file indicator means it's waiting on that permission — click it and allow the prompt. If you don't, Truzme keeps saving your work in the browser regardless — nothing is lost right away, you just won't be writing to that file until you grant it.

Browser support

File connections need a Chromium browser — Chrome, Edge, or Opera. Chrome is recommended.

Firefox and Safari don't support this: opening a file still loads it into Truzme, but it stays in Local mode instead of connecting. Saving still works too, but downloads the file straight to your Downloads folder instead of letting you pick where — that's just how those browsers handle downloads, not something Truzme controls.