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Cloud Object Storage

COSBrowser Quick Start

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Última atualização: 2026-07-28 15:41:21
COSBrowser is a visual interface tool launched by Tencent Cloud Object Storage (COS). It features a simpler page interaction, more convenient operations, and supports both desktop and mobile platforms. With this tool, you can easily view, transfer, and manage your COS resources. For more information about COSBrowser, see Introduction to COSBrowser.
This document briefly introduces how to quickly create a bucket using the COSBrowser tool and complete operations such as object upload, download, and sharing.
You can also experience more network drive management capabilities for free by registering for an enterprise network drive.

Prerequisites

1. You have activated the COS service using your Tencent Cloud account.
Note:
If you do not have a Tencent Cloud account, you can refer to account-related documentation to create one.
If you have not activated the COS service, go to the COS console and activate it as prompted.
2. If you use COS for the first time, it is recommended that you first understand the following basic concepts:
Bucket: is the carrier of objects and can be understood as a "container" for storing objects. A bucket can hold an unlimited number of objects.
Object: is the basic unit of COS and can be understood as data in any format, such as images, documents, and audio/video files.
Region: is the geographical area where Tencent Cloud data centers are distributed. COS data is stored in buckets within these regions.

Operation Steps

Step 1: Download and Install COSBrowser

1. Taking the Windows version of COSBrowser as an example, click to download COSBrowser.
2. After the download is complete, double-click the installation package to open it and follow the prompts to install.
Note:
System requirements for the Windows version of COSBrowser: Windows 7 32/64-bit or later, and Windows Server 2008 R2 64-bit or later.
To download COSBrowser for other system versions, go to the COSBrowser Introduction to download it.

Step 2: Log In to COSBrowser

The Windows version of COSBrowser supports multiple login methods, including API key login, Tencent Cloud account login, and shared link login. Here, we select the Tencent Cloud account login method.

Step 3: Create a Bucket

1. After a successful login, click Create Bucket in the upper-left corner of the tool interface.
2. In the pop-up window, enter the bucket information.



Bucket name: Enter a custom bucket name. Here, we enter examplebucket.
Region: refers to the region to which a bucket belongs. Select the region closest to you. For example, if you are in Shenzhen, you can select Guangzhou, that is, ap-guangzhou.
Access permissions: refers to the access permissions of a bucket. Here, we select "Private Read/Write".
Bucket Tags/Multi-AZ features are optional and can be ignored here.
3. Click OK to complete the creation. You can then see the created bucket in the bucket list.

Step 4: Upload an Object

1. Click the bucket you just created to go to the bucket management page.
2. Choose Upload > Select File, and then select the local file you want to upload to the bucket, for example, exampleobject.txt.
3. Click Upload to upload exampleobject.txt to the bucket.

Step 5: Download an Object

Select the file you want to download, and then right-click Download.

Step 6: Share an Object

COSBrowser supports file sharing via file links or QR codes. The following uses file link sharing as an example.
1. Select the file you want to share, and then click the

button on the right to quickly generate a shareable link.
Note:
Because the file inherits the bucket's private read/write permissions, the generated shareable URL is a temporary access link with a validity period of 2 hours.
2. Send the generated shareable link to the recipient, who can then access or download the file online.
Note:
By default, if the shared file can be opened directly in a browser, accessing the temporary link will display the file online for viewing instead of downloading it.

More Features

In addition to the features mentioned above, COSBrowser offers other richer features, such as modifying bucket access permissions and file preview. For details, see the Desktop Feature List document.

FAQs

We are sorry that you encountered an issue while using the product. You can view COSBrowser Tool Issues or Contact Us.

References

To learn about COSBrowser for mobile (iOS, Android), see the following document.


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