Free · Firefox 142+
Upload and share files from Firefox
Choose files in the extension, follow their live upload progress, then copy the link or send it through WhatsApp, Telegram, Facebook, Reddit and more.
Use ShareIt in Firefox now
Extension built · Awaiting Mozilla signing
Uploading your filesKeep this tab open
Holiday photos18 files · 246 MB
Only files you choose are uploaded
Why isn’t there an “Add to Firefox” button yet?Mozilla must sign every publicly installed Firefox extension. The package is complete and validated; normal installation opens here as soon as Mozilla signing is finished.
What you get
A complete sharing flow without leaving the extension.
Easy file selectionBrowse or drag and drop up to 100 files into the extension uploader.
Live progressSee the percentage and transferred size while every file uploads.
One-click copyingCopy the finished link straight to your clipboard.
Social sharingSend through WhatsApp, Telegram, Facebook, Reddit, X, LinkedIn, email or your device menu.
How it works
Three short steps. Recipients do not need the extension.
- 1Choose your filesUse the toolbar button, Alt + Shift + S, or right-click menu.
- 2Watch the uploadKeep the extension tab open while the progress bar reaches 100%.
- 3Send the linkCopy it or share directly through your favorite app.
Before you install
The exact capabilities and limits, without surprises.
| Cost | Free. No account is required to share files. |
|---|---|
| Firefox permissions | Access to ShareIt.onl for uploads, clipboard access for Copy link, and context menus for the right-click shortcut. |
| Data access | No browsing history, page contents, cookies or passwords are read. |
| File access | Only files you explicitly choose are sent over HTTPS to ShareIt.onl. Other files remain untouched. |
| What it is not | It does not watch browsing activity and is not a background desktop-sync client. |
| Folder backup | Automatic folder backup needs Chrome or Edge; camera uploads and offline files work in Firefox. |
Ready to share?
Upload with progress, copy the link, and send it through the app your recipient already uses.