Open Any File,
Right in Your Browser
Got a file you can't open? Just drag it here. No software to install, no account needed. Works with PDFs, Word docs, Excel sheets, ZIP files, videos, and dozens more.
Drag & drop, click to pick, paste a URL — it just works
Open a File Now
Drag & drop, click to pick, paste a URL — it just works
Local only
100% Private
14+ formats
Works With All These File Types
Don't see yours? Try it anyway — we handle hundreds of formats
As Easy as 1 – 2 – 3
No sign-up, no waiting. Your file opens in seconds.
Pick your file
Drag it onto the page, click to browse your device, or paste a link to a file on the web.
We figure it out
JustOpenFile automatically recognises what type of file it is — no need to tell us.
Open and read
Your file opens right here in the browser. Nothing leaves your device.
No software needed
Got a New Device? Or No App Installed?
On a new computer, a borrowed laptop, or a work machine where you can't install anything? JustOpenFile opens almost any file right in your browser — PDFs, spreadsheets, documents, archives, images, videos, and more. Nothing to install, ever.
For websites & apps
Add File Previews to Your Website — in Minutes
Don't want to build a document viewer from scratch? Embed JustOpenFile on your site with one line of code. Your users get instant previews of PDFs, spreadsheets, images and more — no extra development needed.
Your Files Stay Private
We built JustOpenFile on one simple rule: what you open is yours, and yours alone.
Files you open from your device never leave your computer
Remote files loaded by URL go directly from the source to your browser
When a proxy is needed, we stream the file and discard it immediately — nothing stored
No account required. No tracking. No ads.
Common Questions
Is my file sent to your servers?
No. When you open a local file, it is read entirely within your browser. It never leaves your device.
Does it work without internet?
Yes — once the page has loaded, you can open any local file without an internet connection.
What if my file type is not listed?
Try opening it anyway. We will attempt to display it as text, or show you a file summary if it is a binary file. You can also suggest new formats we should support.
Can I use this on my own website?
Yes — embed the viewer on any website using a simple iframe. Your visitors can preview files without leaving your page.
Is it really free?
Yes, the viewer is completely free to use. No hidden fees, no account required.