BMP to Base64 Converter

How to Convert BMP to Base64 in C#

To convert BMP images into Base64 strings in C#, you can use the efficient .NET libraries, as shown in the example below. These steps demonstrate how to read a BMP image, convert it to Base64, and embed it into an SVG document for use in web development.

Example Code for BMP to Base64 Conversion in C#

// Open a BMP image as a binary filevar bytes = File.ReadAllBytes(@"image.bmp");// Initialize an SVGDocumentvar document = new SVGDocument();// Create an image elementvar img = (SVGImageElement)document.CreateElementNS("http://www.w3.org/2000/svg", "image");// Convert BMP to Base64img.Href.BaseVal = "data:image/bmp;charset=utf-8;base64," + Convert.ToBase64String(bytes);// Add the image element to the SVGdocument.RootElement.AppendChild(img);// Save the SVG documentdocument.Save(@"image-base64.svg");

Steps for BMP to Base64 Conversion

• Read BMP Image: Use the ReadAllBytes(path) method to load the BMP image into a byte array.
• Initialize SVGDocument: Create a new SVGDocument instance to work with.
• Create Image Element: Utilize CreateElementNS() to create an image element following the W3C SVG specification.
• Convert to Base64: Convert the byte array into Base64 using the ToBase64String() method.
• Embed Image: Append the Base64 image into the SVG document.
• Save the File: Save the SVG file with the embedded Base64 image.

Pros and Cons of Data URI

Embedding Base64-encoded images as data URIs provides several advantages but also has its drawbacks.

Advantages

• Improved Speed: Since the image is embedded directly in the document, no additional web requests are needed.
• Enhanced Performance: Less CPU usage as the browser doesn't have to load external resources.
• Offline Access: The web page can function independently of external files, even offline.

Disadvantages

• Larger File Size: Base64 encoding increases the file size by about one-third.
• No Browser Caching: The encoded images are not cached and will reload each time the page is visited.
• Editing Limitations: The Base64 string must be decoded before the image can be edited.
• No Image Indexing: Google does not index Base64 images in its image search results.