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.
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.
Is 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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