how get image md5 hash in the browser in javascript

To get the MD5 hash of an image in the browser using JavaScript, you can use the FileReader API and CryptoJS library.

First, you need to read the contents of the image file using the FileReader API. Once you have the contents of the file, you can generate the MD5 hash using the CryptoJS library.

Here's the code to get the MD5 hash of an image in the browser using JavaScript:


index.tsx
function getMD5Hash(file) {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.readAsBinaryString(file);
    reader.onload = function() {
      const fileContents = CryptoJS.enc.Latin1.parse(this.result);
      const hash = CryptoJS.MD5(fileContents);
      resolve(hash.toString());
    };
    reader.onerror = () => {
      reject(new Error('Failed to read file!'));
    };
  });
}
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You can then call this function by passing in the image file object, like this:


index.tsx
const image = document.querySelector('img');
const file = image.files[0];
getMD5Hash(file)
  .then((hash) => {
    console.log(hash);
  })
  .catch((err) => {
    console.error(err);
  });
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This will log the MD5 hash of the image file to the console. Note that this code assumes that you have an <input type="file"> element with an ID of image and an <img> element that displays the selected image.

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