How to Convert BMP to PDF
Open the Image ↔ PDF Converter, switch to "Image → PDF", drop your BMP files, and click Convert. The bitmap is embedded into a PDF in your browser — nothing is uploaded.
Key takeaways
- BMP is the uncompressed bitmap format Windows has used for decades.
- Supported: 24-bit and 32-bit BMP files (the common cases).
- Smaller output: the PDF is almost always far smaller than the original BMP, because BMP stores raw pixels.
- Batch: convert several BMPs into one PDF, one image per page.
- No software: nothing to install, no account, no watermark.
- 100% private: decoding happens locally in your browser. No uploads.
What is a BMP file?
BMP (bitmap) is one of the oldest image formats, introduced with Windows. It usually stores every pixel with no compression at all, which makes it simple and universal — and large. A single uncompressed screenshot can easily run to tens of megabytes. Converting to PDF packs those pixels into a portable, shareable document.
How to convert BMP to PDF
- Open the Image ↔ PDF Converter.
- Switch to the "Image → PDF" tab.
- Drag in one or more
.bmpfiles, or click to browse. - Check the order — it becomes the page order.
- Click Convert, then Download.
BMP vs PNG vs JPG
| Format | Compression | Typical file size | Best for |
|---|---|---|---|
| BMP | Usually none | Very large | Legacy apps, lossless screenshots |
| PNG | Lossless | Medium | Web, text, logos |
| JPG | Lossy | Small | Photos |
Caveats
- Only 24-bit and 32-bit BMP. Older 8-bit palette BMPs and RLE-compressed BMPs are not supported. If yours will not load, open it in any image viewer and save it as PNG, then convert that.
- Expect a much smaller PDF. Because BMP is uncompressed, the PDF is usually a fraction of the original size — even though the picture is unchanged.
- No text layer. The PDF is image-only, so any text in the BMP is not selectable.
Is it private?
Yes. The bitmap is decoded and embedded into the PDF inside your browser. Nothing is uploaded, no account is needed, and no copy is kept anywhere.
Frequently Asked Questions
Why are BMP files so large?+
BMP usually stores every pixel with no compression, so a single screenshot can be tens of megabytes. That is also why the PDF you create is usually far smaller.
Which BMP variants are supported?+
24-bit and 32-bit BMP files — the common cases. 8-bit palette BMPs and RLE-compressed BMPs are not supported; save them as PNG first and convert that.
Will the PDF be smaller than the BMP?+
Almost always, and usually much smaller, because BMP stores raw uncompressed pixels while the PDF embeds the image efficiently.
Can I convert multiple BMP files at once?+
Yes. Drop them all in — each becomes one page, in the order you added them.
Are my files uploaded?+
No. Conversion happens entirely in your browser. Your images never leave your device.