Base64 to BMP Converter

Free online tool to convert Base64 encoded strings back to BMP images.

Result Preview

How to use this tool:

  1. Paste your Base64 encoded BMP string into the text area above
  2. Click "Convert to BMP" to decode the image
  3. Preview the image in the result section
  4. Click "Download BMP Image" to save the file to your computer

Note: This tool works entirely in your browser. Your data is never uploaded to any server.

Frequently Asked Questions

What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to embed binary data like images in text-based formats such as HTML, CSS, or JSON.
Why would I need to convert Base64 to BMP?
You might need to convert Base64 to BMP when you have an image that was encoded as Base64 (for example, in a data URI or API response) and you need the original BMP file for editing or other purposes.
Is there a limit to the Base64 string length I can convert?
The tool is limited by your browser's memory capacity. Very large Base64 strings (several megabytes) might cause performance issues. For best results, keep your strings under 5MB.
Is my data secure when using this tool?
Yes, absolutely. The conversion happens entirely in your browser - your data never leaves your computer or gets uploaded to any server. This ensures complete privacy for your information.
What if my Base64 string doesn't work?
Make sure your string is a valid Base64 encoded BMP image. The tool will show an error if the string is malformed or doesn't contain a valid BMP image. Check that you've copied the entire string without modifications.