Local files never leave your device.

File Viewer

Open any file in your browser. No upload. No account.

Drop any file here

or click to browse, paste with Ctrl+V

PDFExcelWordZIPJSONCSVImageVideoAudioEPUBSQLiteFont3D...

Use proxy (bypass CORS)

Opening remote files ⌄

The remote server must allow CORS access. If you see a CORS error, enable "Use proxy" above.
Proxy mode routes the request through this server. We do not intercept or store any file content.
Private URLs that require authentication or login cannot be accessed — only publicly accessible files are supported.

Embed file viewer via iframe ⌄

Open any remote file in an embedded viewer using a simple iframe URL:

Basic usage

<iframe
  src="https://justopenfile.com/en/viewer
    ?file=https%3A%2F%2Fexample.com%2Fsample.pdf"
  width="100%" height="600"
  style="border:none; border-radius:8px;"
></iframe>

With proxy (when CORS is not enabled)

<iframe
  src="https://justopenfile.com/en/viewer
    ?file=https%3A%2F%2Fexample.com%2Fsample.pdf
    &proxy=1"
  width="100%" height="600"
  style="border:none; border-radius:8px;"
></iframe>

URL parameters

Parameter	Required	Description
file	Yes	URL-encoded remote file URL
proxy	No	Set to "1" to route through proxy (bypasses CORS)

Try it — live preview