Open SMILES File Online Free & Instant
Open SMILES 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 .smi File?
SMILES (.smi) is a scientific file format. SMILES Chemical Notation It is commonly used by researchers and academics and created by Daylight.
Step-by-Step: How to Open .smi Files in 2026
Follow these steps to open any .smi file online without installing software:
- Go to OpenAnyFile: Navigate to openanyfile.app
- Upload: Drag and drop your .smi file or click Browse
- Auto-detection: The system identifies the SMILES format using signature analysis
- View: Analyze and visualize the file contents in the browser
- Analyze: Use AI-powered analysis to understand the file structure and metadata
- Convert: Optionally convert to MOL, SDF, SVG
Software That Opens .smi Files
Windows
Daylight can open .smi files natively on Windows. Alternatively, use OpenAnyFile for instant browser access.
macOS
macOS may not natively support .smi files. Use the original application or OpenAnyFile.
Linux
Open-source alternatives or OpenAnyFile provide .smi support on Linux.
Mobile (iPhone & Android)
OpenAnyFile works on all mobile browsers — no app download required.
Common Problems Opening .smi Files
- Your OS doesn't recognize the .smi extension
- The file appears corrupted after downloading
- You don't have Daylight installed
- Canonicalization differences
OpenAnyFile bypasses all these issues with universal format detection that works in any browser.
Convert SMILES to Other Formats
Frequently Asked Questions
What is a .smi file?
A .smi file is a scientific format called SMILES. SMILES Chemical Notation
How do I open a .smi file without installing software?
Upload your .smi file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .smi files?
.smi files are typically created by Daylight.
Can I convert .smi to another format?
Yes. OpenAnyFile converts .smi to MOL, SDF, SVG.
Is it safe to open .smi files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .smi on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.