OS/2 Bitmap 1.0

Readable

image

PUID deprecated. Please see fmt/115 for information on OS/2 Bitmap 1.0 and Windows Bitmap 2.0. The only difference between Windows bitmap 2.0 and OS/2 bitmap 1.0 is the data type of the width and height fields of the bitmap header – for Windows 2.0 bitmaps they are signed short integers, for OS/2 1.0 bitmaps they are unsigned shorts. For positive numbers the representation is the same. Consequently, the file formats cannot be distinguished with a file signature test. The PUID for OS/2 Bitmap 1.0 has therefore been deprecated.

Identify it

PRONOM	`x-fmt/25`
Wikidata	`Q28206783`

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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
imageioOpen sourcereads · 2-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
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

Sources

From Kaitai Struct format gallery, PRONOM, Wikidata. Updated 2026-10-24.

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