Premium
About Firefox Klar: No Fuss Browser 139.0
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 139.0
This release comes in several variants (we currently have 2). 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:139.0
Uploaded:May 29, 2025 at 1:02PM UTC
File size:34.82 MB
Downloads:97
Version:138.0.4
Uploaded:May 19, 2025 at 2:36PM UTC
File size:96.31 MB
Downloads:64
Version:138.0.3
Uploaded:May 15, 2025 at 6:31PM UTC
File size:34.51 MB
Downloads:123
Version:138.0.2
Uploaded:May 9, 2025 at 2:20PM UTC
File size:96.41 MB
Downloads:96
Version:138.0
Uploaded:April 29, 2025 at 2:38PM UTC
File size:96.35 MB
Downloads:129
Version:137.0.2
Uploaded:April 20, 2025 at 10:23PM UTC
File size:34.54 MB
Downloads:162
Version:137.0
Uploaded:April 7, 2025 at 3:39AM UTC
File size:34.54 MB
Downloads:296
Version:136.0.2
Uploaded:March 28, 2025 at 6:18AM UTC
File size:34.3 MB
Downloads:229
Version:136.0.1
Uploaded:March 17, 2025 at 8:12PM UTC
File size:95.54 MB
Downloads:86
Version:136.0
Uploaded:March 5, 2025 at 1:47AM UTC
File size:34.29 MB
Downloads:127
