Premium
About Firefox Klar: No Fuss Browser 151.0
Browse like no one’s watching. The new Firefox Klar automatically blocks a wide range of online trackers — from the moment you launch it to the second you leave it. Easily erase your history, passwords and cookies, so you won’t get followed by things like unwanted ads.
Premium
“Private browsing” on most browsers isn’t comprehensive or easy to use. Klar is next-level privacy that’s free, always on and always on your side — because it’s backed by Mozilla, the non-profit that fights for your rights on the Web.
AUTOMATIC PRIVACY
• Blocks a wide range of common Web trackers without any settings to set
• Easily erases your history — no passwords, no cookies, no trackers
BROWSE FASTER
• By removing trackers and ads, Web pages may require less data and load faster
MADE BY MOZILLA
• We believe everyone should have control over their lives online. That’s what we’ve been fighting for since 1998.
Download Firefox Klar: No Fuss Browser 151.0
This release may come in several variants. Consult our handy FAQ to see which download is right for you.
Version:8.4.0
Uploaded:June 25, 2020 at 9:37PM UTC
File size:53.84 MB
Version:151.0
Uploaded:May 19, 2026 at 2:32AM UTC
File size:37.66 MB
Downloads:2
Version:150.0.3
Uploaded:May 13, 2026 at 3:15PM UTC
File size:36.56 MB
Downloads:61
Version:150.0.2
Uploaded:May 7, 2026 at 1:48PM UTC
File size:36.56 MB
Downloads:67
Version:150.0.1
Uploaded:April 28, 2026 at 2:22PM UTC
File size:36.55 MB
Downloads:94
Version:149.0.2
Uploaded:April 8, 2026 at 1:08PM UTC
File size:36.93 MB
Downloads:127
Version:149.0.1
Uploaded:April 1, 2026 at 1:35PM UTC
File size:36.92 MB
Downloads:162
Version:149.0
Uploaded:March 25, 2026 at 6:05AM UTC
File size:36.92 MB
Downloads:95
Version:148.0.2
Uploaded:March 10, 2026 at 4:20PM UTC
File size:36.17 MB
Downloads:106
Version:148.0.1
Uploaded:March 3, 2026 at 2:04PM UTC
File size:36.17 MB
Downloads:101
Version:148.0
Uploaded:February 18, 2026 at 11:23AM UTC
File size:36.17 MB
Downloads:38
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