OpenAnyFile
What is a .aup3 file?
Audacity Project is an audio format developed by Audacity Team, first released in 2021. It is usually created by Audacity 3.0 and later.
Since Audacity 3.0 a project is one SQLite database holding every audio block — which is why damaged projects can often be rescued with SQLite tools.
File details
| Full name | Audacity Project |
|---|---|
| Category | Audio |
| MIME type | application/x-audacity-project |
| Signature (magic bytes) | 53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 (SQLite format 3) |
| Developer | Audacity Team |
| Introduced | 2021 |
| Opens with | Database browser |
| Uploaded? | No — read locally in your browser |
How to open a .aup3 file
OpenAnyFile routes .aup3 files to its database browser, which shows every table with its rows.
- Drop your .aup3 file on the box above, click it to choose the file, or paste it with Ctrl+V.
- The real format is detected from the file's first bytes — not just its name.
- The file opens in the database browser.
- Use fullscreen for a closer look, check its checksums, or download it back unchanged.
What works — and what does not
Works
Viewing and inspecting: every table with its rows. Size, type, signature and checksums are always shown.
Does not work
Editing and saving back. OpenAnyFile is a viewer, not an editor — for changes you still need the original app.
Is it safe to open a .aup3 file online?
Here, yes — because nothing is uploaded. Most "online viewers" send your file to their server. OpenAnyFile reads it with your browser's File API and decodes it on your own device, so there is no copy anywhere else. You can check: open your browser's network tab while opening a file — no upload appears.
Questions about .aup3 files
Can I open a .aup3 file without installing software?
Yes. OpenAnyFile opens .aup3 files in your browser using its database browser. You get every table with its rows, with nothing installed and no account.
How do I know a file is really a .aup3 file?
Check its first bytes instead of its name. A genuine AUP3 file begins with 53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 (SQLite format 3). OpenAnyFile shows the detected type, so a renamed file is easy to spot.
Is my .aup3 file uploaded anywhere?
No. The file is read locally by your browser and never sent to a server — it even works offline once the page has loaded.
Does it work on phones?
Yes — on Android and iPhone, in any modern browser. You can also install OpenAnyFile as an app.
Related formats
Other formats from the same family:
Format facts checked and page updated on September 25, 2026.