BMP to PDF
Drag & Drop Your BMP File Here
BMP files come from Windows Paint, older scanner software, and legacy CAD and imaging applications that predate compressed formats. They are uncompressed, which makes them large — a 10-megapixel BMP can run to 30MB or more. If you need to archive, share, or submit a BMP as a document, converting to PDF reduces the size substantially while keeping the image readable.
This tool handles BMP files directly without requiring you to first convert to JPEG or PNG.
How to Convert BMP to PDF
- Upload your .bmp file. Because BMP files are uncompressed, even modest-resolution images can be several megabytes — the tool accepts files up to 100MB.
- Check the preview to confirm the image loaded without color issues.
- Click Convert. The BMP is compressed and embedded in a PDF page.
- Download. The resulting PDF will be significantly smaller than the source BMP file.
BMP vs Compressed Formats: File Size Comparison
| Format | 1920×1080 file size | Compression | Quality loss |
|---|---|---|---|
| BMP | ~6MB | None (uncompressed) | None |
| PNG | ~1–3MB | Lossless | None |
| JPEG (high quality) | ~500KB–1MB | Lossy | Minimal |
| PDF (from BMP) | ~300KB–2MB | Depends on content | Minimal to none |
Things to Know
- BMP files are uncompressed, so they can be very large for their visual content. A 1920×1080 BMP is around 6MB — converting to PDF typically reduces this to under 1MB for photographic content.
- Some BMP files use 16-bit or 32-bit color with alpha channels. Most converters handle standard 24-bit BMP reliably — if your file uses an unusual bit depth, conversion quality may vary.
- BMP does not support transparency. If you need a transparent background in the PDF, convert to PNG first (which does support transparency) and then use the PNG to PDF tool.
- Very old BMP files from Windows 3.x applications may use RLE compression internally. These are less common but still valid BMP files and should convert normally.
Common Questions
Upload your .bmp file and click Convert. The tool compresses the uncompressed BMP and embeds it in a PDF. The output PDF will be significantly smaller than the source file.
BMP stores every pixel without compression — a 1920×1080 image at 24-bit color depth is exactly 1920 x 1080 x 3 bytes = about 6MB. Converting to PDF applies compression and typically reduces this to under 1MB.
For standard photographic BMP files, the quality difference is minimal. The PDF converter uses high-quality compression settings. For pixel-exact content like technical diagrams, PNG to PDF gives you lossless output.
BMP format does not support transparency, so there is no transparency to preserve. The PDF output will have a white background. If you need transparency in the PDF, convert your image to PNG first and use the PNG to PDF tool.
About this tool: BMP to PDF runs entirely in your browser. No software to install, no account required. Files are deleted automatically. See our Privacy Policy.
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