Download Cobalt Extension
Download Cobalt Extension (current and past versions) for Firefox
Cobalt Extension is available to install from Firefox Browser Add-ons and for download from this page. It has 87 daily users. The latest version is 1.12.0, and it was last updated 9 months ago.
Total download count: 0 (Only count downloads from Chrome-Stats)
Available versions
You can find the current and older versions of Cobalt Extension here. You can download the archived versions or inspect their source codes.
As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
| Version | Download | Size | Download count | Timestamp |
|---|---|---|---|---|
| 1.9 | XPI · ZIP · Source code | 21.89KB | 0 | 2025-01-25 |
| 1.8 | XPI · ZIP · Source code | 21.86KB | 0 | 2025-01-25 |
| 1.7 | XPI · ZIP · Source code | 21.25KB | 0 | 2025-01-25 |
| 1.6 | Paid users only | 21.26KB | 0 | 2025-01-25 |
| 1.5 | Paid users only | 21.17KB | 0 | 2025-01-25 |
| 1.4 | Paid users only | 21.12KB | 0 | 2025-01-25 |
| 1.3 | Paid users only | 19.71KB | 0 | 2025-01-25 |
| 1.12.0 | Paid users only | 22.00KB | 0 | 2025-01-25 |
Install XPI file
An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
- Simply drag-and-drop the XPI into Firefox to install the add-on.
Install ZIP file
- Download and unpack the Cobalt Extension ZIP file to a directory of your choice.
- In Chrome browser, go to
chrome://extensions - Enable Developer mode.
- Click on the Load Unpacked button.
- Select the directory of with the unpacked Cobalt Extension ZIP file from step 1. Cobalt Extension is now installed on your browser.
Similar add-ons
Here are some Firefox add-ons that are similar to Cobalt Extension:
cobalt downloader
dimden
804 4.13 
(15) 
cobaltium
erisws
2 0.00 (0) 
A Youtube Downloader
Saurabh
350 2.25 (12) 
video-dl
wooptoo.com
5 0.00 (0) 
YouTube Video Downloader
Free Browser Addons
2K 3.04 (94) 
Facebook Videos Downloader
Amine SOUAIAIA
5K 2.72 (186) 
YouTube Video Downloader And More
YtTools
400 2.18 (11) 
Youtube™ Downloader
LN
4K 3.85 (60) 
Videos Downloader For Facebook
Amine SOUAIAIA
10 0.00 (0) Popular extensions / apps
Here are some popular extensions / apps that you might be interested in:
Color Fill 3D
CASUAL AZUR GAMES
183M 4.57 (891,301) 
Free VPN for Chrome - VPN Proxy VeePN
https://veepn.com
11M 4.54 (37,432) 
Vita Mahjong
Vita Studio.
131M 4.87 (2,678,448) 
SponsorBlock - Skip Sponsorships on YouTube
Ajay (SponsorBlock)
621K 4.82 (2,874) 
MaxAI: Ask AI anything as you browse (GPT, Gemini, Claude, Grok, etc.)
https://maxai.co
800K 4.75 (14,326) 
Canva: AI Photo & Video Editor
Canva
559M 4.80 (21,619,207) 
TextNow: Call + Text Unlimited
TextNow, Inc.
116M 4.52 (1,521,773) 
TikTok Lite - Save Data & Fast
TikTok Pte. Ltd.
1B 4.64 (9,731,364) 
DeepL: translate and write with AI
https://deepl.com
4M 4.73 (11,520) 
Adobe Acrobat: PDF edit, convert, sign tools
https://www.adobe.com/
307M 4.40 (58,496) 
Sider: Chat with all AI models (DeepSeek, Gemini, Claude, etc.)
Vidline Inc.
3M 4.80 (7,609) 
DeepL: translate and write with AI
DeepL SE
2M 4.50 (661)