ImageResizer.Plugins.S3Reader2 5.0.11-preview08

The ID prefix of this package has been reserved for one of the owners of this package by Prefix Reserved
.NET Framework 4.7.2
This is a prerelease version of ImageResizer.Plugins.S3Reader2.
dotnet add package ImageResizer.Plugins.S3Reader2 --version 5.0.11-preview08
NuGet\Install-Package ImageResizer.Plugins.S3Reader2 -Version 5.0.11-preview08
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="ImageResizer.Plugins.S3Reader2" Version="5.0.11-preview08" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ImageResizer.Plugins.S3Reader2 --version 5.0.11-preview08
#r "nuget: ImageResizer.Plugins.S3Reader2, 5.0.11-preview08"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install ImageResizer.Plugins.S3Reader2 as a Cake Addin
#addin nuget:?package=ImageResizer.Plugins.S3Reader2&version=5.0.11-preview08&prerelease

// Install ImageResizer.Plugins.S3Reader2 as a Cake Tool
#tool nuget:?package=ImageResizer.Plugins.S3Reader2&version=5.0.11-preview08&prerelease


Allows images located on Amazon S3 to be processed and resized as if they were located locally on the disk.

Example URLs

  • http://localhost/s3/bucket-name/filename.jpg?width=100
  • http://localhost/s3/bucket-name/folder/filename.jpg?width=100

See Samples/S3ReaderSample/ in the download for a sample project.


  • Fast - no unnecessary HTTP requests
  • Offers mode for checking for newer files on a configured interval (useful when combined with disk caching)
  • Works great with the DiskCache and CloudFront caching plugins
  • Has an optional SSL mode
  • Can be configured to access private bucket files with an access key


  1. Either Install-Package ImageResizer.Plugins.S3Reader2 or add a reference to ImageResizer.Plugins.S3Reader2.dll.
  2. Add <add name="S3Reader2" prefix="~/s3" region="us-east-1" buckets="my-bucket-1,my-bucket-2,my-bucket-3" /> inside <plugins></plugins> in Web.config.

Region IDs

The default region is 'us-east-1', which works for buckets in both 'us-east-1' and 'us-west-1', but not 'us-west-2' or any other buckets. Use multiple installations of S3Reader2 with different prefixes if you need to support multiple regions.

    "us-east-1", "US East (Virginia)"
    "us-west-1", "US West (N. California)"
    "us-west-2", "US West (Oregon)"
    "eu-west-1", "EU West (Ireland)"
    "ap-northeast-1", "Asia Pacific (Tokyo)"
    "ap-southeast-1", "Asia Pacific (Singapore)"
    "ap-southeast-2", "Asia Pacific (Sydney)"
    "sa-east-1", "South America (S�o Paulo)"
    "us-gov-west-1", "US GovCloud West (Oregon)"

Notes on bucket naming

When creating a bucket, you should avoid certain characters to ensure that DNS works properly. While Amazon will let you create buckets that violate some of these rules, you may have trouble accessing them using the subdomain syntax or over HTTPS. Make sure every bucket is also a valid DNS address. Read more.

  • Bucket names should not contain upper case letters
  • Bucket names should not contain underscores (_)
  • Bucket names should not end with a dash
  • Bucket names should be between 3 and 63 characters long
  • Bucket names cannot contain dashes next to periods (e.g., "" and "my.-bucket" are invalid)
  • Bucket names cannot contain periods - Amazon states this is not supported for SSL-secured access, due to DNS complications. Your mileage may vary.


You must specify a comma-delimited list of permitted bucket names that can be accessed.

If you want to access non-public bucket items, you will need to specify an access ID and key.

<add name="S3Reader2" buckets="my-bucket-1,my-bucket-2,my-bucket-3" prefix="~/s3/" checkForModifiedFiles="false" useSsl="false" accessKeyId="" secretAccessKey="" region="us-east-1" />

  • buckets (required) - Comma-delimited list of permitted bucket names that can be accessed.
  • region - Set to the region containing your buckets.
  • useSsl - Defaults to false. Set to true to transfer the image data over an encrypted connection. Decreases performance.
  • accessKeyId, secretAccessKey - Use these if you need to access non-public files in your amazon buckets.
Product Compatible and additional computed target framework versions.
.NET Framework net472 is compatible.  net48 was computed.  net481 was computed. 
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

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Version Downloads Last updated
5.0.11-preview08 64 12/23/2022
5.0.10-preview07 73 11/17/2022
5.0.9-preview06 68 11/4/2022
5.0.8-preview05 64 11/4/2022
5.0.7-preview-04 75 10/14/2022
5.0.6-preview03 71 10/14/2022
5.0.5-preview02 70 9/29/2022
5.0.4-preview01 73 8/26/2022
5.0.3-preview04 73 8/26/2022
5.0.2-preview03 82 8/25/2022
5.0.1-preview02 82 8/25/2022
4.2.8 1,727 7/31/2020
4.2.7-pre 289 7/14/2020
4.2.6-pre 401 11/2/2019
4.2.5 24,525 4/6/2018
4.2.5-pre 850 2/19/2018
4.2.4-pre 811 12/13/2017
4.2.3-pre 649 12/13/2017
4.2.1-pre 684 11/29/2017
4.2.0 4,649 11/28/2017
4.1.11 847 11/8/2017
4.1.10 1,585 9/13/2017
4.1.9 1,960 6/22/2017
4.1.8 863 6/17/2017
4.1.7 950 6/6/2017
4.1.7-rc 706 6/5/2017
4.1.6-rc 708 6/1/2017
4.1.5-rc 680 6/1/2017
4.1.4-rc 721 5/11/2017
4.1.3-rc 700 5/11/2017
4.1.3-preview 761 5/6/2017
4.1.3-beta 699 5/5/2017
4.0.5 22,300 1/31/2016
4.0.4 1,851 10/25/2015
4.0.3 923 10/25/2015
4.0.2 914 10/25/2015
4.0.1 948 10/25/2015
4.0.0-prerelease0881 1,285 8/11/2015
4.0.0-prerelease0877 820 7/7/2015
3.4.3 23,792 5/8/2014
3.4.2 1,542 11/26/2013