A fast, secure, and privacy-friendly online tool to convert Base64 encoded image data into BMP format instantly within your browser.
The Convert Base64 to BMP tool allows users to transform Base64 encoded image strings into standard BMP image files instantly. All processing happens directly in your browser, ensuring complete privacy and security. No files or data are uploaded to any server at any time.
Base64 encoding increases file size by about 33 percent compared to the original binary data, yet it remains one of the most popular ways to transport images across text-only systems such as emails and JSON APIs.
Base64 was originally developed as a method to transfer binary data safely over systems that only supported plain text. Long before modern web standards existed, email systems required a reliable way to transmit images and attachments. The BMP image format, introduced by Microsoft in the early days of Windows, became a universal standard for uncompressed image storage. This tool bridges those two technologies, making it easy to decode legacy Base64 data back into a classic and widely supported image format.