Convert BMP to PDF

Turn bitmap images into a compact PDF document that anyone can open.

Convert BMP to PDF — Bitmaps Anyone Can Open

BMP is the raw bitmap format Windows has carried since the 1980s. It stores every pixel uncompressed, which keeps the image perfect and makes the files enormous — a single scanned page can run to tens of megabytes. It is also poorly supported outside Windows: send a BMP to a phone or a Mac and it may not preview at all. Converting to PDF fixes both problems, producing a much smaller file that opens everywhere.

Upload your bitmaps and arrange them in the order you want. You can merge them into one multi-page PDF or convert each into its own document, choose A4, US Letter or a page that matches the image, and set the margin around each picture. The images are compressed as they are embedded, so the resulting PDF is typically a fraction of the size of the original BMP files while looking identical on screen and in print.

This is the practical way to archive old scans, screen captures from legacy software and images exported by measuring or medical equipment, which still often write BMP. The tool is free, has no daily limit and adds no watermark; files travel over an encrypted connection and are removed from the server automatically once converted. To go the other way, use the PDF to BMP converter.

Frequently Asked Questions

How do I convert a BMP file to PDF?

Upload your bitmap images on this page, set the page size and margins, and press convert. The PDF is offered for download within seconds.

Can I put several bitmaps into one PDF?

Yes. Switch on the merge option and each image becomes a page in a single document; leave it off to get one PDF per image.

Why is the PDF so much smaller than the BMP files?

BMP stores every pixel uncompressed. When the image is embedded in a PDF it is compressed, so the document is usually many times smaller while looking the same.

Will the image quality drop?

The pictures are embedded at their original resolution and the difference is not visible on screen or in print — you keep the detail and lose only the wasted file size.

Is there a size limit?

A single file can be up to 100 MB, which is generous even for uncompressed bitmaps, and there is no limit on how many files you convert.

Is the tool free?

Yes. No registration, no payment, no daily quota and no watermark on the finished PDF.