Document Center

    Object Storage Service

    • Release Notes
      • Release notes
    • Product Introduction
      • What is OSS?
      • Benefits
      • Basic concepts
      • Scenarios
      • Features
      • Limits
    • Security white paper
      • Security white paper
    • Pricing
      • Billing items and methods
      • Overdue payments
    • Quick Start
      • Get started with Object Storage Service
      • Sign up for OSS
      • Create buckets
      • Upload objects
      • Download objects
      • Delete objects
      • Delete buckets
    • Developer Guide
      • Usage instructions
      • Terms
      • Endpoint
        • Regions and endpoints
        • OSS domain names
        • Access to OSS resources from ECS instances by using the internal endpoint of OSS
      • Storage classes
        • Overview
        • Convert between storage classes
        • Create and use Archive buckets
      • Access OSS
        • Quick start
        • OSS-based app development
      • Buckets
        • Create a bucket
        • Set the ACL for a bucket
        • Obtain the region information of a bucket
        • View the bucket list
        • Enable the pay-by-requester mode
        • Bind custom domain names
        • Configure hotlink protection
        • Transfer acceleration
        • Set CORS rules
        • Bucket tagging
        • Delete a bucket
      • Objects
        • Upload files
          • Simple upload
          • Form upload
          • Multipart upload and resumable upload
          • Append upload
          • Authorized third-party upload
          • Upload callback
          • RTMP-based stream ingest
        • Download files
          • Simple download
          • Resumable download
          • Authorized third-party download
          • OSS Select
        • Manage files
          • Manage Object Meta
          • View the object list
          • Copy objects
          • Delete objects
          • Manage back-to-origin configurations
          • SelectObject
          • Object tagging
        • Single-connection bandwidth throttling
        • Object lifecycle
          • Lifecycle rules
          • Configuration elements
          • Configuration examples
          • FAQ
        • FAQ
          • What are the OSS batch operations?
          • How to obtain the URL of an uploaded object
          • How to use OSS gzip?
      • Data security
        • Retention policy
        • Disaster recovery
          • Zone-redundant storage
          • Cross-region replication
        • Data encryption
          • Server-side encryption
          • Client-side encryption
        • Versioning
          • Overview
          • Enable versioning
          • Suspend versioning
          • Delete marker
        • Signature
          • OSS request process
          • Add signatures to headers
          • Generate a signed URL
        • Identity authentication
          • What is RAM and STS
          • RAM user
          • Access OSS with a temporary access token provided by STS
        • Access and control
          • Overview
          • ACL-based access control
          • Bucket policy
          • Create RAM policies
          • Overview
          • Tutorial: Use RAM policies to control access to OSS
          • Tutorial: Authorize a RAM user under another Alibaba Cloud account by adding a bucket policy
        • OSS sandbox
      • Manage logs
        • Logging
        • Real-time log query
      • Static website hosting
        • Static website hosting
        • Tutorial: Configure static website hosting by using a custom domain name
      • Monitoring service
        • Overview
        • Monitoring service console user guide
        • Alert service
        • Metric item reference
        • Metrics
        • Service monitoring, diagnosis, and troubleshooting
      • Event notification
      • Cloud data processing
    • Tools
      • OSS tools
      • ossbrowser
        • Quick start
        • Permission management
      • ossutil
        • Overview
        • Download and installation
        • Common commands
          • appendfromfile
          • bucket-encryption
          • bucket-policy
          • bucket-tagging
          • bucket-versioning
          • cat
          • config
          • cors
          • cors-options
          • cp
          • create-symlink
          • du
          • getallpartsize
          • hash
          • help
          • lifecycle
          • listpart
          • logging
          • ls
          • mb
          • mkdir
          • object-tagging
          • probe
          • read-symlink
          • referer
          • restore
          • request-payment
          • rm
          • set-acl
          • set-meta
          • sign
          • stat
          • update
          • website
        • View all supported options
        • Object-related commands
      • ossimport
        • Architectures and configurations
        • Standalone deployment
        • Distributed deployment
        • Troubleshooting
      • RAM Policy Editor
      • ossftp
        • Quick installation
        • How to store remote attachments from Discuz! to OSS
        • How to store remote attachments from PHPWind to OSS
        • How to store remote attachments from WordPress websites to OSS
        • FAQ
      • ossfs
        • Overview
        • Quick installation
        • Advanced configurations
        • Common options
        • FAQ
      • osscmd (unavailable)
        • Overview
        • Quick start
        • Commands for operations on buckets
        • Commands for operations on objects
        • Commands for operations on parts
    • SDK Reference
      • Introduction
      • Java
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Buckets
          • Create buckets
          • List buckets
          • Determine whether buckets exist
          • Query the regions of buckets
          • Query bucket information
          • Manage bucket ACLs
          • Delete buckets
          • Bucket tagging
          • Bucket policy
          • Manage lifecycle rules
          • Enable pay-by-requester mode
          • Hotlink protection
          • Set logging
          • Static website hosting
          • Cross-region replication
          • CORS
        • Upload objects
          • Overview
          • Simple upload
          • Form upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Streaming download
          • Download to local files
          • Range download
          • Resumable download
          • Conditional download
          • Download progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • Convert the storage class of an object
          • List objects
          • Query objects
          • Delete objects
          • Copy objects
          • Disable overwrite for objects with the same name
          • Restore objects
          • Manage symbolic links
        • Versioning
          • Versioning
          • Upload objects
          • Download objects
          • Copy objects
          • Delete objects
          • Restore objects
          • Obtain object metadata
          • Manage object ACL
          • Manage symbol links
        • Object tagging
          • Configure object tagging
          • Obtain the tags added to an object
          • Delete the tags added to an object
          • Object tagging and lifecycle rules
        • Single-connection bandwidth throttling
        • Data encryption
          • Server-side encryption
          • Client-side encryption
        • Authorized access
        • Data security
        • Image processing
        • Exception handling
        • Common errors
      • Python
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Buckets
          • Create a bucket
          • List buckets
          • Obtain the region of a bucket
          • Determine whether a bucket exists
          • Obtain bucket information
          • Manage bucket ACLs
          • Delete buckets
          • Bucket tagging
          • Bucket policy
          • Enable pay-by-requester mode
          • Manage lifecycle rules
          • Hotlink protection
          • Set logging
          • Static website hosting
          • CORS
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Streaming download
          • Download to your local file
          • Range download
          • Resumable download
          • Download progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • Convert the storage class of an object
          • List objects
          • Query objects
          • Delete objects
          • Copy objects
          • Restore objects
          • Manage symbolic links
        • Versioning
          • Versioning
          • Upload objects
          • Download objects
          • Copy objects
          • Delete objects
          • Restore objects
          • Obtain object metadata
          • Manage object ACL
          • Manage symbol links
        • Object tagging
          • Configure object tagging
          • Obtain the tags added to an object
          • Delete the tags added to an object
          • Object tagging and lifecycle rules
        • Single-connection bandwidth throttling
        • Data encryption
          • Client-side encryption
          • Server-side encryption
        • Authorized access
        • Data security
        • Enable logging in Python SDK
        • Image processing
        • Chinese character and time
        • Exception handling
        • Common errors
      • Go
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Buckets
          • Create buckets
          • List buckets
          • Determine whether buckets exist
          • Query the regions of buckets
          • Query bucket information
          • Manage bucket ACLs
          • Delete buckets
          • Bucket tagging
          • Bucket policy
          • Manage lifecycle rules
          • Pay-by-requester mode
          • Hotlink protection
          • Set logging
          • Static website hosting
          • CORS
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Progress bars
        • Download objects
          • Overview
          • Streaming download
          • Range download
          • Download to your local file
          • Resumable download
          • Conditional download
          • Download a compressed object
          • Progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage object metadata
          • Convert the storage class of an object
          • List objects
          • Delete objects
          • Copy objects
          • Restore objects
          • Manage symbolic links
        • Versioning
          • Versioning
          • Upload objects
          • Download objects
          • Copy objects
          • Delete objects
          • Restore objects
          • Obtain object metadata
          • Manage object ACL
          • Manage symbol links
        • Object tagging
          • Configure object tagging
          • Obtain the tags added to an object
          • Delete the tags added to an object
          • Object tagging and lifecycle rules
        • Data encryption
          • Client-side encryption
          • Server-side encryption
        • Single-connection bandwidth throttling
        • Data security
        • Authorized access
        • Image processing
        • Error handling
      • C++
        • Preface
        • Installation
        • Quick Start
        • Initialization
        • Buckets
          • Create buckets
          • List buckets
          • Determine whether buckets exist
          • Query the regions of buckets
          • Query bucket information
          • Manage bucket ACLs
          • Delete buckets
          • Bucket tagging
          • Bucket policy
          • Manage lifecycle rules
          • Pay-by-requester mode
          • Hotlink protection
          • Access logging
          • Static website hosting
          • CORS
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Interrupt an upload task
          • Use a progress bar
          • Upload callback
        • Download objects
          • Overview
          • Download to a local file
          • Download to local memory
          • Range download
          • Resumable download
          • Use a progress bar
        • Manage objects
          • Overview
          • Determine whether the specified object exists
          • Manage the ACL of an object
          • Manage Object Meta
          • Convert the storage class of an object
          • List objects
          • Delete objects
          • Copy an object
          • Restore objects
          • Manage symbolic links
        • Versioning
          • Versioning
          • Upload objects
          • Download objects
          • Copy objects
          • Delete objects
          • Restore objects
          • Obtain object metadata
          • Manage object ACLs
          • Manage symbolic links
        • Object tagging
          • Configure object tagging
          • Obtain the tags added to an object
          • Delete the tags added to an object
          • Object tagging and lifecycle rules
        • Data encryption
          • Client-side encryption
          • Server-side encryption
        • Single-connection bandwidth throttling
        • Data security
        • Authorized access
        • IMG
      • PHP
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Buckets
          • Create buckets
          • List buckets
          • Determine whether buckets exist
          • Query the regions of buckets
          • Query the metadata of buckets
          • Manage bucket ACLs
          • Delete buckets
          • Manage lifecycle rules
          • Hotlink protection
          • Set logging
          • Static website hosting
          • CORS
          • Bind a custom domain name
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Multipart upload
          • Upload callback
        • Download objects
          • Overview
          • Download to your local file
          • Download to local memory
          • Range download
          • Conditional download
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
          • Enable MD5 verification
        • Authorized access
        • Image processing
        • Exception handling
      • C
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Buckets
          • Create buckets
          • List buckets
          • Query the regions of buckets
          • Query bucket information
          • Manage bucket ACLs
          • Delete buckets
          • CORS
          • Manage lifecycle rules
          • Set logging
          • Hotlink protection
          • Static website hosting
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Download an object to a local file
          • Download to your local memory
          • Range download
          • Resumable download
          • Download progress bars
        • Manage objects
          • Overview
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
        • Authorized access
        • Image processing
        • Error handling
        • FAQ
      • . NET
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Buckets
          • Create buckets
          • List buckets
          • Determine whether buckets exist
          • Manage bucket ACLs
          • Delete buckets
          • Manage lifecycle rules
          • Set logging
          • CORS
          • Static website hosting
          • Hotlink protection
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Resumable upload
          • Multipart upload
          • Upload progress bars
          • Upload callback
        • Download objects
          • Overview
          • Streaming download
          • Range download
          • Resumable download
          • Download progress bars
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Manage ACL for an object
          • Manage Object Meta
          • List objects
          • Delete objects
          • Copy objects
          • Restore an archive object
          • Manage a symbolic link
        • Authorized access
        • Image processing
        • Exception handling
      • Android
        • Preface
        • Installation
        • Initialization
        • Quick start
        • Buckets
          • Create buckets
          • Query bucket ACLs
          • Query bucket information
          • Delete buckets
          • Hotlink protection
        • Upload objects
          • Overview
          • Simple upload
          • Append upload
          • Multipart upload
          • Resumable upload
          • Progress bar
          • Upload callback
        • Download objects
          • Overview
          • Streaming download
          • Range download
          • Download to local files
          • Conditional download
        • Manage objects
          • Overview
          • Determine whether a specified object exists
          • Copy an object
          • List objects
          • Delete an object
          • Set the Content-Type of an object
          • Obtain the metadata of an object
        • Data security
        • Sign a URL
        • Authorized access
        • Image processing
        • Exception handling
      • iOS
        • Preface
        • Installation
        • Quick start
        • Initialization
        • Manage a bucket
        • Upload objects
          • Overview
          • Simple upload
          • Multipart upload
          • Append upload
          • Resumable upload
          • Upload callback
        • Download objects
          • Overview
          • Simple download
          • Streaming download
          • Range download
          • Resumable download
        • Manage objects
          • Overview
          • Determine whether the specified object exists
          • Obtain object metadata
          • List objects
          • Copy objects
          • Delete objects
        • Data security
        • Signed URLs
        • Authorized access
        • IMG
        • Exception handling
      • Node. js
        • Installation
        • Parameters
        • Quick start
        • Initialization
        • Buckets
          • Create buckets
          • List buckets
          • Delete buckets
          • Manage lifecycle rules
          • Bucket policy
          • Bucket tagging
          • Manage bucket ACLs
          • Set bucket ACLs
          • CORS
          • Set logging
          • Hotlink protection
          • Static website hosting
          • CNAME
        • Upload objects
          • Overview
          • Upload local files
          • Upload from local memory
          • Streaming upload
          • Multipart upload
          • Append upload
          • Resumable upload
          • Upload callback
        • Download objects
          • Overview
          • Download to a local file
          • Download to local memory
          • Streaming download
          • HTTP-based download
        • Manage objects
          • Overview
          • Determine whether an object exists
          • Manage Object Meta
          • Manage the ACL of an object
          • List all objects in a bucket
          • Copy an object
          • Delete objects
          • Convert the storage classes of objects
          • Restore an Archive object
        • Object tagging
          • Configure object tagging
          • Obtain the tags added to an object
          • Delete the tags added to an object
          • Object tagging and lifecycle rules
        • Server-side encryption
        • Authorized access
        • Image processing
        • Exception handling
        • FAQ
      • Browser.js
        • Installation
        • Quick start
        • Options
        • Upload objects
        • Download objects
        • Manage objects
        • CNAME
        • Authorized access
        • Set ACLs
        • Image processing
        • Browser
        • Exception handling
        • FAQ
      • Ruby
        • Installation
        • Quick start
        • Buckets
          • Create buckets
          • List buckets
          • Determine whether buckets exist
          • Manage bucket ACLs
          • Delete buckets
          • Manage lifecycle rules
          • Hotlink protection
          • Set logging
          • CORS
          • Static website hosting
          • CNAME
        • Upload objects
        • Download objects
        • Manage objects
        • Use STS to authorize temporary access
        • Exception handling
        • Application of Rails
      • Media-C
        • Preface
        • Installation
        • Initialization
        • Client operations
        • Server operations
        • HLS basic interfaces
        • HLS encapsulated interfaces
        • Scenarios
        • FAQ
    • Data Processing
      • Image Processing
        • IMG user guide
        • Image processing access rules
        • Resize images
        • Crop images
          • Incircle
          • Indexed cut
          • Custom crop
          • Rounded rectangle
        • Rotate images
          • Rotate
          • Adaptive orientation
        • Apply effects
          • Blur
          • Brightness
          • Contrast
          • Sharpen
        • Convert formats
          • Format conversion
          • Gradual display
          • Quality transformation
        • Add watermarks
        • Obtain image information
          • Query information
          • Retrieve dominant image tones
        • Image style
        • Source image protection
        • Save processed images
        • FAQ on using old and new versions of APIs and domain names
        • Common errors
      • Capture video snapshots
      • Intelligent Media Management (IMM)
        • Quick start
        • Document transform
        • Facial recognition
        • Image recognition
    • Console User Guide
      • Log on to the OSS console
        • Use Alibaba Cloud accounts to log on to the OSS console
        • Use RAM users' credentials to log on to the OSS console
        • Overview of the OSS console
      • Manage buckets
        • Bucket overview
        • Create buckets
        • Access control
          • Modify bucket ACLs
          • Configure CORS rules
          • Configure hotlink protection
        • Manage a domain
          • Bind custom domain names
          • Configure transfer acceleration
          • Bind accelerate endpoints
          • Bind accelerated domain names
          • Host SSL certificates
        • Basic settings
          • Configure the pay-by-requester mode
          • Configure server-side encryption
          • Configure bucket tagging
          • Configure static website hosting
          • Configure lifecycle rules
          • Configure retention policies
          • Configure back-to-origin rules
          • Delete buckets
          • Configure the event notification feature
        • Redundancy for fault tolerance
          • Configure CRR
          • Configure versioning
        • Manage logs
          • Configure logging
          • Configure real-time log query
          • Configure log analysis
        • View resource usage
        • Decompress ZIP packages
      • Upload, download, and manage objects
        • Overview
        • Upload objects
        • Create folders
        • Search for objects
        • Configure ACL for objects
        • Modify the storage classes of objects
        • Use bucket policies to authorize other users to access OSS resources
        • Download objects
        • Configure scheduled backup
        • Configure object HTTP headers
        • Restore objects
        • Use OSS Select
        • Configure symbolic links
        • Configure object tagging
        • Delete objects
        • Delete folders
        • Manage parts
        • Configure Cloud Storage Gateway (CSG)
    • Best Practices
      • Migrate data to OSS
        • Migrate data between buckets in OSS
        • Migrate data sources from a third party to OSS
        • Migrate data from Amazon S3 to Alibaba Cloud OSS
        • Use ossimport to migrate data
      • Upload data to OSS through Web applications
        • Use PostObject to upload data to OSS through Web applications
          • Use PostObject on the web to upload objects
          • Add signatures on the client by using JavaScript and upload data to OSS
          • Direct transfer after adding a signature on the server
          • Add signatures on the server, configure upload callback, and directly transfer data
      • Application server
        • Set up direct data transfer for mobile apps
        • Permission control
        • Set up upload callback for mobile apps
      • Data processing and analysis
        • Construct a data warehouse by using OSS and MaxCompute
        • Use HDP 2.6-based Hadoop to read and write OSS data
        • Use CDH 5 to read and write OSS data
        • Use CDH 6-based Apache Impala to query OSS data
        • Configure Spark to use OSS Select to accelerate data queries
      • Data backup and recovery
        • Back up buckets
      • Data security
        • Check data transmission integrity by using 64-bit CRC
        • Sensitive data protection
      • OSS resource monitoring and alarm service
      • OSS performance and scalability best practices
      • OssDemo for Android
        • OssDemo introduction
        • Use the existing app server
        • Upload objects
        • Perform IMG
      • Terraform
        • Introduction
        • Use Terraform to manage OSS
    • API Reference
      • Overview
      • API overview
      • Common HTTP headers
      • Access control
        • User signature authentication
        • Add signatures to headers
        • Generate a signed URL
        • Bucket access control
      • Service operations
        • GetService (ListBuckets)
      • Bucket operations
        • Basic operations
          • PutBucket
          • DeleteBucket
          • GetBucket (ListObjects)
          • GetBucketInfo
          • GetBucketLocation
        • ACL
          • PutBucketACL
          • GetBucketAcl
        • Lifecycle
          • PutBucketLifecycle
          • GetBucketLifecycle
          • DeleteBucketLifecycle
        • Versioning
          • PutBucketVersioning
          • GetBucketVersioning
          • GetBucketVersions (ListObjectVersions)
        • Authorization policy
          • PutBucketPolicy
          • GetBucketPolicy
          • DeleteBucketPolicy
        • Logging
          • GetBucketLogging
          • DeleteBucketLogging
          • PutBucketLogging
        • Static websites
          • PutBucketWebsite
          • GetBucketWebsite
          • DeleteBucketWebsite
        • Hotlink protection
          • GetBucketReferer
          • PutBucketReferer
        • Tagging
          • PutBucketTags
          • GetBucketTags
          • DeleteBucketTags
        • Encryption
          • PutBucketEncryption
          • GetBucketEncryption
          • DeleteBucketEncryption
        • Pay-by-requester
          • PutBucketRequestPayment
          • GetBucketRequestPayment
        • CORS
          • PutBucketcors
          • GetBucketCORS
          • DeleteBucketCORS
          • OptionObject
      • Object operations
        • Basic operations
          • PutObject
          • GetObject
          • CopyObject
          • AppendObject
          • DeleteObject
          • DeleteMultipleObjects
          • HeadObject
          • GetObjectMeta
          • PostObject
          • Callback
          • RestoreObject
          • SelectObject
        • Multipart upload
          • InitiateMultipartUpload
          • UploadPart
          • UploadPartCopy
          • CompleteMultipartUpload
          • AbortMultipartUpload
          • ListMultipartUploads
          • ListParts
        • ACL
          • PutObjectACL
          • GetObjectACL
        • Symbolic link
          • PutSymlink
          • GetSymlink
        • Tagging
          • PutObjectTagging
          • GetObjectTagging
          • DeleteObjectTagging
      • LiveChannel-related operations
        • Overview
        • RTMP ingest URLs and signatures
        • PutLiveChannel
        • ListLiveChannel
        • DeleteLiveChannel
        • PutLiveChannelStatus
        • GetLiveChannelInfo
        • GetLiveChannelStat
        • GetLiveChannelHistory
        • PostVodPlaylist
        • GetVodPlaylist
        • FAQ
    • FAQ
      • Data migration
      • Data integrity
      • Domain/network
      • Bucket management
      • Object management
      • Signature
      • APIs and SDKs
    • General Reference
      • Guidelines for the use of documentation
        • Alibaba Cloud documentation
        • Instructions for open source documentation
          • Open-Source Documentation Code of Conduct
          • Editing Open-Source Documentation
      • Alibaba Cloud console
      • Regions and zones
      • Service limits
      • Create an AccessKey
      • ICP Filing
      • Glossary
 
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    Overview

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    Overview

    Edit in GitHub
    Last Updated: May 07, 2019 Edit in GitHub
    You can use APIs to perform the following operations on objects in a bucket:
    • Determine whether the specified object exists
    • Obtain Object Meta
    • List objects
    • Copy an object
    • Delete objects
    Previous: Resumable download Next: Determine whether the specified object exists

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