Bulk BMP to ARW Converter — Free, No Upload
Convert multiple BMP files to ARW instantly — all in your browser. No file limits, no watermarks, and completely private.
Drop BMP files here or click to browse
Supports batch selection — convert hundreds of files
Why convert BMP to ARW?
Because BMP files use uncompressed compression and 24-bit, they are not ideal for Sony Alpha mirrorless photography. Converting them to ARW (lossless RAW, 14-bit per channel) solves this. This conversion processes your files entirely in your browser using WebAssembly – no upload, no server, no privacy concerns. Perfect for sensitive or large batches.
Technical comparison: BMP vs ARW
How to use — 3 simple steps
Popular use cases for BMP → ARW
When you need transparency support – convert from BMP to ARW
To reduce image file size by up to 80% without visible quality loss (BMP → ARW)
For archiving old BMP images in a future-proof, well-supported format (ARW)
Bulk processing an entire folder of BMP screenshots to ARW for documentation
💡 Pro tips
- Use the ZIP download to get all converted files in a single click
- All processing is private — files are never uploaded to any server