Converter Tools
BMP to Base64
Upload a BMP file and get a Base64 string or data URI ready to embed in HTML or CSS.
Last updated: May 29, 2026
Client-Side Processing
Input Data Stays on Device
Instant Local Execution
Find this tool useful? Support the project to keep it free!
Buy me a coffeeWhat is BMP to Base64?
BMP to Base64 reads a bitmap image file entirely in your browser and encodes it as a Base64 string. The data URI output (data:image/bmp;base64,...) can be used directly in an HTML img src or CSS background-image without hosting the file separately.
How to Use BMP to Base64
1
Drop a BMP file onto the upload area or click to browse.
2
Copy the Base64 string or data URI.
3
Paste into your HTML or CSS.
Common Use Cases
- Embedding BMP images in single-file HTML documents.
- Testing BMP rendering in a browser without a web server.
- Prototyping layouts that include bitmap image assets.
File size
BMP files are uncompressed and often large. Base64 encoding adds ~33% overhead. Consider converting to PNG or WebP before embedding for smaller output.
Frequently Asked Questions
Is my file uploaded?
No. The file is read and encoded entirely in your browser using the FileReader API.
Related Tools
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to plain text — with URL-safe mode, auto-detect, and size stats.
APNG to Base64
Convert an Animated PNG (APNG) file to a Base64 string or data URI — paste directly into HTML or CSS without hosting the image.
AVIF to Base64
Convert an AVIF image file to a Base64 string or data URI for embedding in HTML, CSS, or JavaScript.
ASCII to Base64
Encode ASCII text strings to Base64. Commonly used for HTTP headers, API tokens, and config values.
Image Converter
Convert images between PNG, JPG, WebP, and AVIF formats — with quality controls and batch conversion.
ASCII to Text Converter
Convert ASCII codes (decimal, hex, or octal) to readable text. Paste your ASCII code list and get the text string output instantly.