BMP Converter for Legacy Bitmap Images
BMP (Bitmap) is a legacy Windows image format that stores raw pixel data with little or no compression. That makes it simple and lossless, but also huge: a 1920x1080 24-bit BMP is about 6 MB before metadata. For sharing, email, web publishing, or documentation, BMP is usually the wrong final format.
FastEdit opens BMP files in the browser and exports them as PNG, JPG, WebP, AVIF, or TIFF. The conversion stays local, which matters when the BMP came from a medical device, industrial system, internal tool, or old Windows workflow that should not be uploaded to a third-party converter.
Codec None (uncompressed) or RLE (rarely used)
Color Depth 1-bit (monochrome) to 32-bit (RGBA)
Animation Support No
Transparency 32-bit BMP supports alpha (limited software support)
What it handles
- Convert BMP to PNG, JPEG, WebP, AVIF, or TIFF with adjustable quality settings in the browser
- Crop, resize, and rotate BMP images with platform-specific dimension presets
- Side-by-side comparison to preview compressed output before saving
- Batch convert entire folders of BMP files to any modern format in one operation
- Smart fit-to-size targets specific file size limits when converting to lossy formats
- Zero uploads, critical for medical, industrial, or classified BMP images that can't leave your network
Where it fits
- Converting BMP screenshots from legacy Windows applications to PNG or WebP for sharing and archiving
- Batch-converting BMP files from medical or industrial imaging systems to compressed formats for storage
- Converting BMP clipboard captures to JPEG or PNG before pasting into documents or emails
- Reducing BMP image storage footprint by converting to lossless PNG (50-70% size reduction) or lossy WebP (90%+)
- Preparing BMP assets from older design software for modern web delivery
- Checking a BMP preview before exporting so you do not send a broken or unsupported file to a client
Technical Specifications
Codec None (uncompressed) or RLE (rarely used)
Color Depth 1-bit (monochrome) to 32-bit (RGBA)
Animation Support No
Transparency 32-bit BMP supports alpha (limited software support)
Browser Support All browsers can display BMP, but no site should serve it
File Size Uncompressed: ~3 bytes per pixel (6.2 MB for 1920x1080 RGB)
Byte Order Stored bottom-to-top (row order), little-endian
MIME Type image/bmp