PDF to BMP
Convert PDF pages to uncompressed BMP bitmaps for legacy software and imaging systems that accept nothing else.
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About This Tool
Nobody chooses BMP for its merits. You need it because a piece of software refuses everything else - industrial control systems, older medical and laboratory equipment, embedded displays, and legacy Windows applications that were written when BMP was the obvious choice.
Each page is rendered to an uncompressed bitmap at the DPI you set. Because there is no compression, there are no artefacts at all, and the files are large: a single A4 page at 300 DPI runs to roughly 25 MB.
For anything with a modern image decoder, PNG gives you the same lossless quality at a fraction of the size. BMP is the right answer only when compatibility leaves you no choice.
How to Use
Load the PDF
Drop in up to 10 files.
Select pages
Choose which pages to export. Large bitmaps add up fast.
Set the DPI
Use the lowest DPI the target system will accept - file size scales with the square of resolution.
Convert and download
Save the bitmaps, as a ZIP for multiple pages.
Use Cases
Legacy application input
Software that will only import BMP, still running because replacing it is not an option.
Industrial and lab equipment
Imaging and control systems with fixed format requirements.
Embedded displays
Devices with minimal decoders that read raw bitmap data directly.
Frequently Asked Questions
Why are the files so large?
BMP stores every pixel with no compression. An A4 page at 300 DPI is about 25 MB.
Should I use PNG instead?
Almost always, unless the receiving system specifically requires BMP. PNG is lossless too and far smaller.
What DPI do I need?
The lowest the target system accepts. Doubling DPI quadruples the file size.
Is there any quality loss?
None from compression. The only limit is the rendering resolution you chose.