Why convert BMP to PDF?

PDF is a universally readable document format for sharing, printing, or archiving a single image without requiring an image viewer — handy when the source is an old BMP that not every recipient's software opens natively.

Will the PDF be smaller than the source BMP?

Usually, since the image is embedded as compressed PNG data rather than the source's typically uncompressed pixel data — though overall PDF size also depends on the page size and margins you pick.

Does the source BMP actually carry usable alpha?

It depends on the file. Older BITMAPINFOHEADER-based BMPs have no alpha at all, while newer V4/V5-header BMPs can carry real per-pixel alpha — but not every BMP-writing tool sets it even when the header supports it. The PDF keeps whatever the source actually has.

Are my files uploaded?

No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.

What is validated before conversion?

The file must actually be a BMP — the tool checks the "BM" header bytes, not just the filename or extension, before decoding.

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BMP to PDF Converter

Convert a BMP image into a single-page PDF directly in your browser, with configurable page size, orientation, fit, and margins.

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BMP to PDF processes files locally in your browser.

What BMP to PDF conversion does

Convert an old BMP image into a single-page PDF directly in your browser, with configurable page size, orientation, fit, and margins — a quick way to make a legacy bitmap shareable or printable as a document.

How to convert BMP to PDF

Choose a BMP file.
Pick a page size, orientation, fit, and margin.
Select Convert & download.
Save the .pdf file from your browser downloads.

Why use this conversion

PDF is a universally readable document format for sharing, printing, or archiving a single image without requiring an image viewer — useful when the source is a BMP that not every recipient's software will open directly.

Transparency and output quality

The image is embedded in the PDF as PNG data, so whatever alpha channel the browser decoded from the source BMP (if any) is preserved inside the document. Since BMP source files are typically uncompressed, embedding the image as PNG data inside the PDF is usually a size reduction on the image itself; overall PDF file size also depends on the page size and margins you choose.

Privacy and local processing

Processing occurs locally in the browser.
Files are not uploaded to Looty Tools for conversion.
Converted files remain on your device.

Limits and known issues

Input: BMP (.bmp) only, up to 25.0 MB and 8,192 px per side.
This tool places exactly one image on one PDF page. For combining several images into one multi-page PDF, use the dedicated Images to PDF tool.
Whether the embedded image carries transparency depends on the source BMP's header: older BITMAPINFOHEADER files have no alpha, while newer V4/V5-header files with real alpha data will keep it.
Metadata is not preserved in the downloaded file.

Related tools

Guides

BMP to PDF FAQ

Why convert BMP to PDF?: PDF is a universally readable document format for sharing, printing, or archiving a single image without requiring an image viewer — handy when the source is an old BMP that not every recipient's software opens natively.
Does PDF output keep transparency?: The image is embedded as PNG data, so whatever alpha channel the browser decoded from the source BMP is preserved inside the document.
Will the PDF be smaller than the source BMP?: Usually, since the image is embedded as compressed PNG data rather than the source's typically uncompressed pixel data — though overall PDF size also depends on the page size and margins you pick.
Does the source BMP actually carry usable alpha?: It depends on the file. Older BITMAPINFOHEADER-based BMPs have no alpha at all, while newer V4/V5-header BMPs can carry real per-pixel alpha — but not every BMP-writing tool sets it even when the header supports it. The PDF keeps whatever the source actually has.
Are my files uploaded?: No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.
What is validated before conversion?: The file must actually be a BMP — the tool checks the "BM" header bytes, not just the filename or extension, before decoding.