How to Convert PDF to BMP
BMP is a specialist request these days. Nobody chooses it for sharing — the files are huge and phones will not open them — but plenty of industrial software, older document management systems, label printers and image-processing pipelines still expect a plain uncompressed bitmap and nothing else.
This guide covers exporting PDF pages as BMP files in the browser: whole document or selected pages, what to expect from the file sizes, and when one of the other image formats would serve you better.
Ready to do it now? Open PDF vers BMP and get your file in a few seconds.
Open the toolWhen you need PDF to BMP
- Feeding pages into legacy or industrial software that only reads uncompressed bitmaps.
- Preparing input for image-processing pipelines that expect raw pixel data with no compression artefacts.
- Working with older print or labelling equipment whose drivers were written around BMP.
How to convert PDF to BMP step by step
Open the PDF to BMP tool
Go to the PDF to BMP page. It runs in the browser with nothing to install and no account to create.
Upload the document
Drag the PDF onto the upload area or select it from the dialog. Encrypted files must be unlocked first with the Unlock PDF tool.
Choose which pages to export
Convert the whole document, or switch to page selection. Because BMP files are very large, exporting only the pages you actually need saves a great deal of time and bandwidth.
Convert
Start the conversion. Each selected page is rendered into a separate bitmap; give it longer than you would for JPG or PNG.
Download the bitmaps
Download the result — one file, or an archive when several pages were exported — and open one to confirm it loads correctly in the software that needs it.
Common problems and how to fix them
The files are enormous
That is BMP working as designed: no compression means an A4 page can be tens of megabytes. Export only the pages you need, and use PNG instead if the receiving software accepts it — PNG is also lossless but far smaller.
The bitmaps will not open on a phone or in a browser
BMP support outside Windows is patchy. If the images are for people rather than machines, convert to PNG or JPG instead.
The download takes a long time
Size, not processing, is the bottleneck. Converting a handful of selected pages instead of a whole document usually solves it outright.
BMP, PNG or JPG: which to export
Pick BMP only when something on the receiving end demands it. It stores raw pixels with no compression, which guarantees compatibility with old software and image-processing tools but produces files nobody wants to move around.
For every other case PNG gives you the same lossless quality at a fraction of the size, and JPG is smaller still for photographic pages. If you have a choice, export PNG for documents and diagrams and JPG for photographs, and keep BMP for the systems that insist on it.
Questions fréquentes
Why would I want BMP instead of PNG?
Only for compatibility. Some legacy, industrial and imaging systems read uncompressed bitmaps exclusively. PNG is lossless too and much smaller for every other purpose.
How big will the files be?
A colour A4 page at typical resolution is roughly 20–25 MB as an uncompressed bitmap, compared with a few hundred kilobytes as PNG.
Does every page become a separate file?
Yes. One page is rendered as one BMP, and multiple pages are delivered together for download.
Can I export just a few pages?
Yes, and with BMP you should — use page selection to avoid an unnecessarily huge download.
Can I turn the bitmaps back into a PDF?
Yes. The BMP to PDF tool reassembles them into a document in the page order you choose.
Is there a limit on the source document?
A PDF can be up to 100 MB, and there is no limit on how many documents you convert.
Ready to do it now? Open PDF vers BMP and get your file in a few seconds.
Open the tool