Convert HEIC to 24-bit BMP
BMP is a plain, uncompressed bitmap. This tool writes 24-bit BMP files from HEIC photos for old software or simple pipelines. Files are large and have no transparency.
Drop HEIC photos here, or pick them from your device
Stays on your device. Nothing is uploaded.
Processing on this device
How to use it
- Add HEIC files.
- Choose the background colour for any transparent areas.
- Leave colour on sRGB unless you need the original profile.
- Convert and download.
What it keeps
- Every decoded pixel, uncompressed.
- Pixel dimensions and visible orientation.
What it removes or changes
- Transparency is flattened onto your background colour, because the 24-bit BMP has no alpha.
- Files are big, since BMP is not compressed.
- No embedded metadata. BMP has no place for EXIF.
Limits
- 24-bit means 8 bits per channel.
- Colour profile handling is limited to the sRGB conversion done before writing.
- Limits: 200 MB per file, 100 megapixels.
Compatibility
BMP is read by old Windows tools, embedded systems, simple image libraries and teaching programs. Most modern workflows prefer PNG. If a program does not specifically need BMP, PNG is smaller and also free of extra loss.
Privacy
Conversion runs in a Web Worker in your tab. Nothing is uploaded.
BMP or PNG for legacy needs
PNG gives you the same pixels in a much smaller file and supports transparency. BMP is justified only when some software, hardware or exercise explicitly demands it. Otherwise pick PNG, and use BMP as the exception.
Troubleshooting
The BMP is huge.
BMP stores raw pixels. Use PNG if a program accepts it.
My transparent background became coloured.
BMP has no alpha. Change the background colour or use PNG.
The camera info is gone.
BMP has no place to store EXIF, so camera and date details cannot be kept in this format.
Frequently asked questions
Does BMP lose quality?
It adds no compression loss. The source decodes to 8 bits.
Why is it so big?
BMP stores every pixel without compression, so the file is many times larger than the HEIC.
Is transparency supported?
No. It is flattened onto a colour you choose.