Can JavaScript Encode a PNG Image to a Base64 String?

How to Encode a String to Base64 in JavaScript

Question:

Can JavaScript, like PHP, encode a PNG image to a Base64 string? How is it done, considering that binary data handling is unfamiliar?

Answer:

Yes, JavaScript offers methods for both encoding and decoding Base64. Employ btoa() and atob() for these tasks.

Usage Considerations:

• btoa(): Accepts strings representing 8-bit bytes and returns a Base64-encoded string. Ensure the input string meets this criterion or consider appropriate encoding beforehand.
• atob(): Returns a string where each character represents an 8-bit byte. Note that this does not imply text representation; binary data is expected.

Alternative Resources:

• Explore binary image data loading using JavaScript and XMLHttpRequest at "How do I load binary image data using Javascript and XMLHttpRequest?"

Browser Support:

Check caniuse.com for comprehensive browser support information regarding btoa() and atob():

• btoa(): https://caniuse.com/?search=atob
• atob(): https://caniuse.com/?search=btoa

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