After conversion from JPEG to WebP image increased in size

[NiJeTi]

Using library to reduce incoming images size.

Used code:

public async Task<MemoryStream> ConvertStreamAsync(Stream input, CancellationToken cancellationToken)
{
    Log.Debug("Converting image stream");

    using var imagesProcessor = new ImageJob();
    var output = new MemoryStream();

    await imagesProcessor
       .Decode(input, false)
       .EncodeToStream(output, false, new WebPLosslessEncoder())
       .Finish()
       .WithCancellationToken(cancellationToken)
       .InProcessAsync();

    output.Position = 0;

    Log.Debug("Done converting image stream");

    return output;
}

input stream can contain JPEG, PNG, WebP and GIF

After passing 1.1 MB JPEG to input I received 4,82 MB WebP

[lilith]

Lossless formats take up much more space than lossy formats. You might try the lossy webp encoder and set an equivalent quality value to what the jpeg was created with.

On Sat, Jul 31, 2021, 3:22 PM Arkady Skvoretsky @.***> wrote:

Using library to reduce incoming images size.

Used code:

public async Task ConvertStreamAsync(Stream input, CancellationToken cancellationToken) { Log.Debug("Converting image stream");

using var imagesProcessor = new ImageJob();
var output = new MemoryStream();

await imagesProcessor
   .Decode(input, false)
   .EncodeToStream(output, false, new WebPLosslessEncoder())
   .Finish()
   .WithCancellationToken(cancellationToken)
   .InProcessAsync();

output.Position = 0;

Log.Debug("Done converting image stream");

return output;

}

input stream can contain JPEG, PNG, WebP and GIF

After passing 1.1 MB JPEG to input I received 4,82 MB WebP [image: image] https://user-images.githubusercontent.com/5685857/127752686-8bab1d0b-c107-43a3-b4ee-6dffbad07471.png

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[NiJeTi]

Thanks for the explanation!