## Base64 Encoding Images In this lesson, we will learn how to encode an image to Base64. First, we will create a new folder called "images" and save our two SVG files (happy.svg and sad.svg) in it. Next, we will import the base64 library and create a new function: ```python import base64 def svg_to_base64_uri(svg): svg_bytes = svg.encode("utf-8") base64_bytes = base64.b64encode(svg_bytes).decode("utf-8") return f"data:image/svg+xml;base64,{base64_bytes}" ``` Now, we can use the `svg_to_base64_uri()` function to encode our SVGs to Base64 and assign the results to the `happy_svg_uri` and `sad_svg_uri` variables. ```python def deploy_mood(): happy_svg_uri = "" sad_svg_uri = "" with open("./images/happy.svg", "r") as f: happy_svg = f.read() happy_svg_uri = svg_to_base64_uri(happy_svg) print(happy_svg_uri) with open("./images/sad.svg", "r") as f: sad_svg = f.read() sad_svg_uri = svg_to_base64_uri(sad_svg) mood_nft = mood_nft.deploy(happy_svg_uri, sad_svg_uri) ``` Finally, we will import the "mood_nft" contract and use it to pass our encoded image data. ```python from src import mood_nft ``` ```python def deploy_mood(): happy_svg_uri = "" sad_svg_uri = "" with open("./images/happy.svg", "r") as f: happy_svg = f.read() happy_svg_uri = svg_to_base64_uri(happy_svg) print(happy_svg_uri) with open("./images/sad.svg", "r") as f: sad_svg = f.read() sad_svg_uri = svg_to_base64_uri(sad_svg) mood_nft = mood_nft.deploy(happy_svg_uri, sad_svg_uri) ``` We can then run our script using the following terminal command: ```bash mox run deploy_mood_nft ``` This will return a Base64 encoded string that can be used to render our SVG image in a browser. We can copy and paste the string into our browser to verify that it works as expected. We will then make the `happy_svg_uri` and `sad_svg_uri` constant variables in our contract file. ```python HAPPY_SVG_URI: immutable(String[800]) = "" SAD_SVG_URI: immutable(String[800]) = "" ``` We will pass these into the constructor of the contract so the image data is stored there. ```python def init(happy_svg_uri: String[800], sad_svg_uri: String[800]): ow.init() erc721.init(NAME, SYMBOL, BASE_URI, NAME, EIP_712_VERSION) HAPPY_SVG_URI = happy_svg_uri SAD_SVG_URI = sad_svg_uri ```