How Can I Store and Retrieve Images in localStorage for Web Display?

Storing and Retrieving Images in localStorage for Web Display

Problem:

How can you upload an image, save it in localStorage, and display it on a subsequent page?

Solution:

Saving Image to localStorage:

1. Grab the uploaded image with getElementById('bannerImg').

2. Convert the image to a Base64 string using the getBase64Image() function:

   var imgData = getBase64Image(bannerImage);

3. Save the Base64 string as a localStorage value:

   localStorage.setItem("imgData", imgData);

Retrieving Image from localStorage and Displaying on Next Page:

1. On the new page, create an image element with a blank src:

   <img src="">

2. On page load, retrieve the Base64 string from localStorage:

   var dataImage = localStorage.getItem('imgData');

3. Apply the Base64 string to the image's src attribute:

   bannerImg = document.getElementById('tableBanner');
   bannerImg.src = "data:image/png;base64," + dataImage;

Additional Considerations:

• The getBase64Image() function converts the image to a PNG format by default. You can specify a different format if needed.
• This solution is compatible with most major browsers. However, some legacy browsers may not support localStorage.

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