How to post image with fetch?

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according to this https://muffinman.io/uploading-files-using-fetch-multipart-form-data it works in different way, at least for me it works as well.

const fileInput = document.querySelector('#your-file-input') ;
const formData = new FormData();

formData.append('file', fileInput.files[0]);

    const options = {
      method: 'POST',
      body: formData,
      // If you add this, upload won't work
      // headers: {
      //   'Content-Type': 'multipart/form-data',
      // }
    };
    
    fetch('your-upload-url', options);

You should remove the 'Content-Type': 'multipart/form-data' and it started to work.

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