BMP to Markdown Converter
FileFlip converts BMP to Markdown entirely inside your browser, using ImageMagick, MuPDF and Pandoc compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert a BMP file to Markdown?#
- Drop your BMP file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to Markdown and the conversion starts on its own. FileFlip downloads 79.9 MB of WebAssembly the first time and nothing after that, then runs ImageMagick, MuPDF and Pandoc on your own machine.
- Save the Markdown file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting BMP to Markdown lose quality?#
No. The BMP picture is placed into the Markdown document at its full resolution, so every pixel reaches it intact. What you give up is that it becomes a picture inside a document rather than text.
Is it safe to convert BMP files online?#
Yes, because nothing is uploaded. FileFlip converts BMP files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What BMP to Markdown actually does to the file#
Converting BMP to Markdown runs on ImageMagick, MuPDF and Pandoc, downloads 79.9 MB of WebAssembly the first time and nothing after that, places the picture into the document at full resolution.
| Engine | ImageMagick, MuPDF and Pandoc |
|---|---|
| Conversion path | 3 steps: BMP → PNG → HTML → Markdown |
| Downloaded to your browser | 79.9 MB, once, then cached by your browser |
| Quality | Pixels preserved |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
Worth knowing before you start:
- the picture is placed in the document as a picture; no text is recognised out of it
- the file passes through HTML on the way, so anything HTML cannot express does not survive
What is a BMP file?#
A BMP file holds a device-independent bitmap: a pixel grid stored with a Microsoft-defined header and, in the overwhelming majority of BMP files in the wild, no compression at all.
Use BMP when a Windows-native application, printer driver, or legacy tool specifically expects it, or when pixel data has to be stored with zero encoding overhead for a processing pipeline.
Convert BMP to PNG or JPEG for anything leaving that pipeline, since both produce a far smaller file and PNG matches BMP's lossless, generation-safe quality.
What is an Markdown file?#
An MD file holds Markdown, John Gruber's 2004 plain-text markup that uses light punctuation such as # and * for structure and converts to HTML, while still reading cleanly as unformatted text on its own.
Write in Markdown when the document is prose with light structure that will be read as either rendered HTML or plain text, like a README or a blog post.
Convert Markdown to a heavier format when the document needs something Markdown was never designed for, such as page layout, citations, or a footnote style a specific target requires.
BMP to Markdown questions people ask#
Why are BMP files so much bigger than JPEG or PNG?
Most BMP files store every pixel's color value directly with no compression, so a BMP is close in size to the raw uncompressed image data. JPEG and PNG both apply compression, lossy in JPEG's case and lossless in PNG's, which is why the same photo saved as either is a fraction of the size of a BMP.
Can a BMP file be compressed?
Yes, though it's rare in practice. The BMP specification includes run-length encoding modes, RLE8 for 8-bit images and RLE4 for 4-bit images, that compress losslessly the same way GIF's LZW does, just less efficiently. Almost all BMP files encountered in practice still use BI_RGB, the uncompressed mode, because that is what most software defaults to writing.
Does BMP support transparency?
It can, but support is inconsistent. The BITMAPV4HEADER and BITMAPV5HEADER, both extensions to the original format, can store a 32-bit image with an alpha channel, but many image viewers, browsers, and older software ignore that alpha data entirely and render the image as fully opaque. PNG's alpha transparency is much more reliably supported across software.
Is BMP the same thing as a DIB?
They're closely related. DIB, device-independent bitmap, is the internal Windows data structure of header, color table, and pixel data that a BMP file wraps in a short file header. The .dib extension is used for that same data saved without expecting the .bmp file header, which is why BMP and DIB are treated as aliases of the same format.