COSBrowser Overview

Last updated: 2022-01-04 12:26:00

    COSBrowser is a visual interface tool launched by Tencent Cloud to make it easier and simpler for you to view, transfer, manage, and interact with COS resources. Currently, COSBrowser is available for desktop and mobile devices. For more information, see:

    Download URL

    COSBrowser OS System Requirements Download Address
    Desktop Version Windows Windows 7 32/64-bit or above, Windows Server 2008 R2 64-bit or above Windows
    macOS macOS 10.13 or above macOS
    Linux Includes a GUI that supports the AppImage format
    Note: To launch a client that runs CentOS, you need to run ./cosbrowser.AppImage --no-sandbox in the terminal .
    Mobile Version Android Android 4.4 or later Android
    iOS iOS 11 or above iOS
    Web Edition Web Browsers such as Chrome, FireFox, Safari, and IE10+ Web
    Uploader Plugin Web Chrome browsers Web Store/Offline Download

    COSBrowser for Desktop

    COSBrowser for desktop focuses on resource management and uploading and downloading data in batches.


    COSBrowser Desktop Version uses the system-configured proxy to connect to the internet. Please make sure that your proxy is set up properly or disable the proxy configuration if it fails to connect to the Internet.

    • For queries on Windows, go to "Internet Options".
    • For queries on macOS, go to "Network Preferences".
    • For queries on Linux, go to System Settings > Network > Network Proxy.

    COSBrowser for desktop has the following features:

    Feature Description
    Creating/Deleting a bucket Creates or deletes a bucket
    Viewing bucket details Views the basic information of your bucket
    Viewing statistics Views the current storage capacity and number of objects in your bucket
    Permission management Modifies the permissions on your buckets and objects
    Setting versioning Enable/Suspends bucket versioning
    Adding an access path Adds an access path
    Uploading a file/folder Uploads files/folders to a bucket separately, in batches, or incrementally
    Downloading a file/folder Downloads files/folders to the local file system separately, in batches, or incrementally
    Deleting a file/folder Deletes files/folders from a bucket separately or in batches
    Synchronizing files Synchronizes local files to your bucket in real time
    Copying and pasting files Copies files/folders separately or in batches from one directory to another
    Renaming files Renames files in a bucket
    Creating a folder Creates a folder in a bucket
    Viewing file details Views the basic information of the files in a bucket
    Generating a file link Generates a file access link with a certain validity period by requesting a temporary signature
    Sharing a file/folder Shares a file/folder and sets a validity period for the sharing
    Exporting file URLs Exports file URLs in batches
    Previewing a file Previews media files (images, video, and audio) in your bucket
    Searching a file Searches files in a bucket through prefix search
    Searching buckets Searches existing buckets
    Viewing file versions/incomplete multipart uploads
  • Views multiple versions of a file in a versioning-enabled bucket
  • Views the incomplete multipart uploads in your bucket
  • Setting up a proxy Sets up a proxy to access COS
    Setting the number of concurrent transfers Sets the number of concurrent transfers for file upload or download
    Setting the number of parts to be transferred Sets the number of parts for multipart upload or download
    Setting the number of retries upon transfer failure Sets the number of retries upon upload or download failure
    Setting upload check Double-checks files uploaded to a bucket
    Limiting single-thread speed Limits the upload and download speeds for a single thread
    Viewing a local log Saves the record of operations on COSBrowser in the form of a local log

    COSBrowser Mobile Version

    The COSBrowser mobile version is mainly used to monitor COS resources (such as storage usage and traffic) at any time you want. For more supported features, please see Mobile Version Features.


    Feedback and Suggestions

    If you have any questions or suggestions during your use of COSBrowser, please feel free to give us your feedback: