Checks if a download URL has been downloaded before. Cancels duplicate downloads and lets you locate the existing file.
Users
5
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#277K
#230K among extensions
Version
1.1.0
updated 27 Aug 2026
Users
monthly, 4 months
Latest, 18 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 18 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About File Download Dedup
Prevents duplicate file downloads, saving bandwidth and disk space.
🔍 How It Works
When you download a file, the extension checks if the URL has been downloaded before:
• If the file still exists → popup confirmation with "Show in Finder" or "Download Again"
• If the file was deleted → automatically allowed through
⚙️ Configurable File Types
Monitors all file types by default. You can restrict monitoring to specific extensions (such as installers or archives) via the toolbar popup.
🛡️ Privacy First
• All data stored locally in your browser
• No data collection, tracking, or external transmission
• No account required
• Open source
📌 Known Limitations
• URL-level matching (not filename): same file on different CDN URLs are treated as separate
• macOS FSEvents delay: after deleting a file in Finder, Chrome may take a few seconds to detect it