Open .loom Files Online — Free LOOM Viewer
Open LOOM File Online — Free & Instant
No signup required. Works in your browser.
📁 Drag & drop your file here
or click to browse • Max 100MB
✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install
What Is a .loom File?
A .loom file is a data format known as LOOM. Loom Single Cell Matrix This format is created by Linnarsson Lab and is widely used by developers, analysts, and data engineers.
LOOM files contain structured data data that requires compatible software to open. With OpenAnyFile, you can parse and transform .loom files directly in your browser without installing any software.
How to Open .loom Files Online
- Visit OpenAnyFile LOOM page
- Drag and drop your .loom file onto the upload area, or click "Browse" to select it
- OpenAnyFile automatically detects the LOOM format using magic byte analysis
- View, analyze, and parse and transform your file contents in the browser
- Optionally convert to CSV, H5AD or download
Software That Opens .loom Files
.loom files are primarily created by Linnarsson Lab. In the data space, you may encounter .loom files from third-party tools, online converters, or export functions. Regardless of the source, OpenAnyFile handles them all.
Open .loom on Different Platforms
- Windows: Use the original software or upload to OpenAnyFile for instant access
- macOS: Preview may not support .loom — use OpenAnyFile as a universal viewer
- Linux: Open-source alternatives exist, or use OpenAnyFile in any browser
- Mobile (iPhone/Android): OpenAnyFile works on all mobile browsers
Common .loom File Problems
HDF5 based format
Other common issues include: your OS not recognizing the file extension, the file appearing corrupted after download, or lacking the required software. OpenAnyFile bypasses all these issues with universal format detection.
Convert LOOM to Other Formats
LOOM files can be converted to 2 formats including CSV, H5AD.
Related Data Formats
If you work with .loom files, you may also encounter these data formats:
- AGG (.agg) — Open & convert .agg files online
- ALTO (.xml) — Open & convert .xml files online
- ANNDATA (.h5ad) — Open & convert .h5ad files online
- ARROW (.arrow) — Open & convert .arrow files online
- Arrow IPC (arrow) — Open & convert arrow files online
- ARROW_STREAM (.arrows) — Open & convert .arrows files online
- ASDF (.asdf) — Open & convert .asdf files online
- ASN1 (.asn1) — Open & convert .asn1 files online
- ASYNCAPI (.yaml) — Open & convert .yaml files online
- AVRO (.avro) — Open & convert .avro files online
Popular LOOM Conversions
Frequently Asked Questions
What is a .loom file?
A .loom file is a data format called LOOM. Loom Single Cell Matrix
How do I open a .loom file without installing software?
Upload your .loom file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .loom files?
.loom files are typically created by Linnarsson Lab.
Can I convert .loom to another format?
Yes. OpenAnyFile converts .loom to CSV, H5AD.
Is it safe to open .loom files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .loom on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.