Open File Online
Instant online access to 130+ popular and professional file types. Open and inspect anything in your browser without downloading a single app.
How to Use
Open and view your files in 3 simple steps. No registration, no installation, completely free.
Upload Your File
Drag and drop your file into the upload area, or click to browse and select from your device. Supports 130+ file formats.
Wait for Processing
Your file is processed locally in your browser. No data is uploaded to any server, ensuring complete privacy and security.
View Your File
Instantly view your file with our advanced viewer. Navigate, search, and interact with your file content seamlessly.
100% Private & Secure - All processing happens in your browser
Supported File Formats
Open and view 130+ file formats directly in your browser. No software installation required.
Documents & Text
View documents, spreadsheets, presentations, and text files with syntax highlighting and formatting preserved.
Images & Graphics
Display photos, graphics, and design files including iPhone HEIC photos and Photoshop documents.
Archives
Browse and extract files from compressed archives without downloading the entire archive.
Video & Audio
Play videos and audio files directly in your browser with built-in media player.
Frequently Asked Questions
Is Open File Online free to use?+
Yes, Open File Online is completely free. No registration or payment required.
Do I need to install any software?+
No installation needed. Open File Online works entirely in your web browser.
Is my data secure?+
Absolutely. All file processing happens locally in your browser. Your files are never uploaded to our servers.
What file types are supported?+
We support 130+ file formats including JSON, ZIP, RAR, XLSX, HEIC, Markdown, text files, and many more.
How to open Excel files online?+
Simply upload your XLSX or XLS file and view it with our interactive spreadsheet viewer.
Learn more about opening Excel filesHow to open HEIC files on Windows?+
Upload your iPhone HEIC photos and view them instantly. No conversion needed.
Read HEIC file guideHow to view JSON files with formatting?+
Our JSON viewer provides syntax highlighting, collapsible tree view, and easy navigation.
Explore JSON viewer featuresCan I open ZIP files online?+
Yes, browse and download individual files from ZIP archives without extracting the entire archive.
See ZIP viewer guideHow to open RAR files?+
Upload RAR files to browse contents and extract specific files online.
Learn about RAR supportCan I view Word documents?+
Open DOCX files to read the content with proper formatting preserved.
Read DOCX viewer guideHow to open PSD files without Photoshop?+
View Photoshop PSD files online with layer support and preview.
Explore PSD viewerCan I open 3D STL files?+
View 3D printer models with interactive rotation and zoom controls.
Learn about STL viewerIs there a file size limit?+
For optimal performance, we recommend files under 1GB. Larger files may work but could be slower.
Can I use this on mobile devices?+
Yes, Open File Online is fully responsive and works on smartphones, tablets, and desktop computers.
Does it work offline?+
Once the page is loaded, most file viewing features work offline.
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