Blazor.Cropper

A blazor library provide a component to crop image
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Live demo: http://49.234.6.167/cropper

It is:

• almost full c#
• fast
• mobile compatible
• lighweight
• support proportion
• GIF crop support(only for files smaller than 1mb)
• open source on github

If you find Blazor.Cropper helpful, you could star this repo, it's really important to me.

For a long time, crop image in blazor bother me a lot. That's why I tried to implement a cropper in blazor.

Quick Start

Only 4 steps to use Blazor.Cropper

Step0. Add nuget pkg

Install our nuget pkg at nuget.org. Add namespace to _import.razor:

@using Blazor.Cropper

Step1. Add script referrence

Then, you should paste following code into your index.html:

<script src="_content/Chronos.Blazor.Cropper/CropHelper.js"></script>

Step2. Add cropper

Just add cropper to your code. We recommend you to use it inside a modal card.
Note: to use the cropper, you need to use a <InputFile> component to get a file source. You must provide a paramter named InputId, which's value is the same as the id attribute of the <InputFile> component.
Example:

@* .... some code ...*@
<InputFile id="input1"></InputFile>
<Cropper InputId="input1" ></Cropper>
@* .... some code ...*@

Step3. Get result

To get the crop result, you need to get the reference of the Cropper, then call the Cropper.GetCropedResult() method.
Example:

@* .... some code ...*@
<Cropper InputId="input1" @ref="cropper"></Cropper>
@* .... some code ...*@
@code{
    Cropper cropper;
    @* .... some code ...*@
    void GetCropResult()
    {
        var re = cropper.GetCropedResult();
        var buffer = re.GetBytes();
        var base64 = re.Base64;
    }
    @* .... some code ...*@
}

Api referrence

We have detailed xml comments on Cropper's properties & methods, simply read it while use it!
On the other hand, you can go to the sample project for usage examples.
To build it, simply clone it and run it in visual studio. The running result should be like this:

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