maybe I just can’t think out of the box right now, but I have a problem with my react native app that I couldn’t solve.

I want to upload Pictures from my App to a supabase Storage Bucket. The Docs mention, that I need to convert the image to base64 to upload direct from react native.

I tried to convert my file with expo FileSystem to a base64 String, but the image is not viewable. Not in my app, not in the browser and not if I download the file.

Where is the problem in my code? Can anyone help me?

const album = await MediaLibrary.getAssetsAsync({album: albumId})

const resUpload = album.assets.map(async (asset) => {
    const name = uuid.v4()
    const folder =....


    return await supabase.storage.from("sbucket").upload(folder + "/" + name, decode("data:image/png;base64," + await FileSystem.readAsStringAsync(asset.uri)), {
        contentType: 'image/png'
    })
})

I tried to upload the image to supabase bucket and it completes. But I am not able to open or view my image. Something with the base64 encoding is wrong.