Windows Bitmap 5.0

Writable

image · also known as BMP (5.0)

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Identify it

Extensions	`.bmp.rle.dib`
MIME types	`image/bmp`
Signatures	`424d` at byte 0 (Windows Bitmap 5.0)
PRONOM	`fmt/116fmt/115fmt/117fmt/118fmt/119fmt/114x-fmt/25x-fmt/270`
Wikidata	`Q192869Q27596417`
Library of Congress	`fdd000189`
Apple UTI	`com.microsoft.bmp`

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Open it

3DSlicerOpen sourcereads and writes · BSD licenses
AvogadroOpen sourcewrites · 3-clause BSD License
Bad PeggyOpen sourcereads and writes · GNU General Public License, version 3.0
bmp-jsOpen sourcereads and writes · MIT License
Classic ColorsOpen sourcereads and writes · GNU General Public License, version 2.0
DendroscopeOpen sourcewrites · GNU General Public License, version 3.0
DevILOpen sourcereads and writes · GNU Lesser General Public License, version 2.1
digiKamOpen sourcereads and writes · GNU General Public License, version 2.0 or later
GD Graphics LibraryOpen sourcewrites · BSD licenses
GDALOpen sourcereads and writes · MIT License
GIMPOpen sourcereads and writes · GNU General Public License, version 3.0
ImageMagickOpen sourcereads and writes · ImageMagick License
InVesaliusOpen sourcereads and writes · GNU General Public License, version 2.0 / GNU Lesser General Public License, version 3.0 or later
KmPlotOpen sourcewrites · GNU General Public License, version 2.0 or later
LibreOffice DrawOpen sourcereads and writes · Mozilla Public License, version 2.0
PhpThumbOpen sourcereads and writes · GNU General Public License
Q141647655Open sourcereads and writes · Apache Software License 2.0 / MIT License
Q6861478Open sourcewrites · GNU General Public License, version 2.0
ShotwellOpen sourcereads and writes · GNU Lesser General Public License, version 2.1 or later
SimThyrOpen sourcewrites · BSD licenses
SVG-editOpen sourcewrites · MIT License
Visualization LibraryOpen sourcereads and writes · BSD licenses
Visualization ToolkitOpen sourcereads and writes · 3-clause BSD License
AbydosOpen sourcereads · GNU Lesser General Public License
AndroidOpen sourcereads · Apache Software License 2.0 / GNU General Public License, version 2.0
Apache TikaOpen sourcereads · Apache Software License 2.0
ArchivistaOpen sourcereads · GNU General Public License, version 2.0
AudiverisOpen sourcereads · GNU General Public License
Bio-Formats LibraryOpen sourcereads · GNU General Public License
CinePaintOpen sourcereads · GNU General Public License, version 2.0
ConverseenOpen sourcereads · GNU General Public License, version 3.0
DearkOpen sourcereads · MIT License
ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later
Ginkgo CADxOpen sourcereads · GNU Lesser General Public License
GodotOpen sourcereads · MIT License
GQViewOpen sourcereads · GNU General Public License, version 2.0
imageioOpen sourcereads · 2-clause BSD License
Insight Segmentation and Registration ToolkitOpen sourcereads · Apache Software License 2.0
KolourPaintOpen sourcereads · BSD licenses
KPaintOpen sourcereads · BSD licenses

And 254 more in the JSON record.

Convert it

To	With	Fidelity	Command and losses
Portable Network Graphics	ImageMagick	Lossless	`convert in.bmp out.png` Pixels kept; some metadata, colour profiles or layers may be dropped.
Tagged Image File Format	ImageMagick	Lossless	`convert in.bmp out.tif` Pixels kept; some metadata, colour profiles or layers may be dropped.
GIF 89a	ImageMagick	Lossy	`convert in.bmp out.gif` Reduced to 256 colours.
JPEG File Interchange Format 1.02	ImageMagick	Lossy	`convert in.bmp out.jpg` Lossy compression.
WebP	ImageMagick	Lossy	`convert in.bmp out.webp` Lossy compression.

Documentation

kaitai grammar: https://github.com/kaitai-io/kaitai_struct_formats/blob/master/image/bmp.ksy

Versions and variants (7)

OS/2 Bitmap 1.0Readable
Windows DDB 1.0Readable
OS/2 Bitmap 2.0Partly documented
Windows Bitmap 2.0Readable
Windows Bitmap 3.0Readable
Windows Bitmap 3.0 NTPartly documented
Windows Bitmap 4.0Partly documented

Sources

From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), Just Solve the File Format Problem (File Formats Wiki), Kaitai Struct format gallery, PRONOM, Wikidata. Updated 2026-10-24.

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