COSBrowser is a visual interface tool launched by Tencent Cloud COS to make it easier and simpler for you to view, transfer, manage, and interact with COS resources. Currently, it is available for desktop (Windows, macOS, Linux) and mobile clients (Android, iOS). For more information, see COSBrowser Overview.
For the download URL and instructions, see COSBrowser Overview.
Desktop Version login
COSBrowser Desktop Version can be logged in only with a TencentCloud API key.
TencentCloud API secretID and secretKey : You can get them on the API Key page in the CAM console. After you log in successfully, the key will be saved in Historical Key for future use.
Bucket/Access Path: You can leave it empty when logging in with the root account. If you use a sub-account for login, you need to enter an authorized path such as
You cannot log in to COSBrowser with a project key.
Mobile Version login
COSBrowser Mobile Version supports the following three login options:
- If your Tencent Cloud account was created with a QQ account, you can also use the login with WeChat method to log in just by selecting login with QQ on the redirected WeChat Mini Program screen.
- If you use a sub-account, you can log in with key or WeChat. For login with WeChat, just select the sub-account on the redirected WeChat Mini Program screen.
For more information, see COSBrowser Overview.
examplebucket-1250000000), and select the region where the bucket should reside.
Login with a temporary key is not supported.
Notes for trial
Application trial rules:
Application trial restrictions:
The trial version only provides basic data management capabilities, such as uploading files, downloading files, and sharing links. To try out more features, log in with your personal account. For more information, see Getting Started with COSBrowser.
You can run the
./cosbrowser.AppImage --no-sandbox command in the terminal to launch COSBrowser.
Currently, COSBrowser are available on Desktop Version and Mobile Version.
For the download address, see Download URL.
You can use the file sync feature of COSBrowser Desktop Version to upload specified files in your local folders to a bucket in real time. For detailed directions, see the description of the file sync feature in User Guide for Desktop Version.
COSBrowser currently can't directly display the thumbnails of all files.
The overview page of COSBrowser Mobile Version displays three buckets by default. You can scroll down to view more buckets.
COSBrowser uploads objects to the STANDARD storage class by default. You can select the storage class and access permission when uploading objects.
Take COSBrowser for Windows as an example. You can navigate to Advanced Settings, and configure a greater number of concurrent files and parts under Upload and Download.
You can copy a file link as follows:
- If public read is enabled for the file, you can use an unsigned link, i.e., object address (valid permanently) to access it.
- If private read is enabled for the file, you must use a signed link to access it. You can customize the link validity period in the Copy Link window, which is 2 hours by default.
The above issue may occur when the two files
com.tencent.cosbrowser.ShipIt under the
/Users/username/Library/Caches/ directory belong to a root account and a user account, respectively. The resulting permission issue can cause update failures.
Run the following command in Terminal on your Mac:
sudo chown $USER ~/Library/Caches/com.tencent.cosbrowser.ShipIt/
Solution: We recommend you download v2.1.x or later.
cosbrowser.exeinstallation is interrupted?
This problem occurs if COSBrowser has been installed before, but its traces have not been removed from your system after manual deletion. Therefore, when you reinstall it, the installer aborts the installation as it identifies existing traces but no actual application.
Manually remove the traces left after the previous installation of COSBrowser, or use a cleaner tool (such as the Software Management tool provided by Tencent PC Manager).
The DNS error indicates that the COS domain name failed to be resolved in your local network. We recommend you change your local DNS server address to a public one such as
188.8.131.52 and try again or change the network environment for testing.