OpenAnyFile
What is a .e57 file?
ASTM E57 3D Imaging is a 3D/CAD format developed by ASTM International, first released in 2011. It is usually created by Terrestrial laser scanners.
A vendor-neutral format for scanner point clouds plus their panoramic photos.
File details
| Full name | ASTM E57 3D Imaging |
|---|---|
| Category | 3D & CAD |
| MIME type | application/x-e57 |
| Signature (magic bytes) | 41 53 54 4D 2D 45 35 37 (ASTM-E57) |
| Developer | ASTM International |
| Introduced | 2011 |
| Opens with | Universal inspector |
| Uploaded? | No — read locally in your browser |
How to open a .e57 file
OpenAnyFile routes .e57 files to its universal inspector, which shows a hex view, the detected signature, checksums and any readable text.
- Drop your .e57 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 universal inspector.
- Use fullscreen for a closer look, check its checksums, or download it back unchanged.
What works — and what does not
Works
Viewing and inspecting: a hex view, the detected signature, checksums and any readable text. Size, type, signature and checksums are always shown.
Does not work
A rendered view. This format has no open decoder, so you get a byte-level inspection and readable text instead.
Is it safe to open a .e57 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 .e57 files
Can I open a .e57 file without installing software?
Yes. OpenAnyFile opens .e57 files in your browser using its universal inspector. You get a hex view, the detected signature, checksums and any readable text, with nothing installed and no account.
How do I know a file is really a .e57 file?
Check its first bytes instead of its name. A genuine E57 file begins with 41 53 54 4D 2D 45 35 37 (ASTM-E57). OpenAnyFile shows the detected type, so a renamed file is easy to spot.
Is my .e57 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.