Keep an eye on a site
Click the toolbar button for overall totals, current-site usage, and your busiest websites. Switch between Today and Last hour.
YOUR BROWSING, IN BYTES
See where your
Firefox data goes.
Downloads and uploads, grouped by the websites you visit. A quick toolbar summary when you need it. A full dashboard when you want to dig deeper.
Signed release coming shortly
The first release with automatic updates is being signed.
Local history. No account. No browsing data sent to this site.
Data usageTodayALL WEBSITES
254.78 MB↓ 164.93 MB downloaded↑ 89.85 MB uploaded
CURRENT WEBSITE
mail.google.comTOP WEBSITES
mail.google.com46.52 MB
chatgpt.com38.63 MB
arstechnica.com18.15 MB
Illustrative preview · your history stays on your device
Follow usage over time
Explore hourly history for up to 90 days. Search websites, choose a date range, or export your results as CSV.
Stay in control
Pause collection or delete your history whenever you want. Private browsing is excluded.
Before you install
Measured traffic, with limits
This extension uses Firefox’s request counters. It is useful for finding busy websites, but it is not an exact match for Windows or your internet bill. Browser-internal traffic, WebRTC, and ongoing WebSocket messages are not included.
Full uBlock Origin can prevent measurement
In our Firefox testing, full uBlock Origin caused requests to appear with zero byte counters. If you use it, the extension may undercount severely. This limitation is not fixed by changing installation order.
Installing and getting updates
Open the download link in Firefox and approve the installation. If Firefox downloads the XPI instead, open Add-ons and themes, choose the gear menu, then Install Add-on From File.
Update-enabled releases point Firefox to this site’s update feed. Future releases still require Mozilla signing. Firefox checks for updates periodically; updates are not instant and depend on your add-on update settings.