Convert BMP to JPG
Convert BMP bitmap images to JPG format instantly in your browser. JPG gives you dramatically smaller files than BMP with minimal visible quality loss. No upload needed.
Drag 'n' drop files here, or
click to select files
.bmp
Drop your files and click Convert to get JPG
//when_to_use
When to Convert BMP to JPG
- Converting BMP screenshots from legacy Windows applications to JPG for sharing via email or web
- Compressing massive BMP exports from scientific instruments or medical equipment into manageable JPG files
- Converting BMP files from old CAD or GIS software for use in modern documentation and web portals
- Preparing BMP graphics from 1990s/2000s software for upload to modern social media that rejects BMP
- Archiving old Windows BMP files as JPG to save 90%+ storage space with no visible quality difference
//comparison
BMP vs JPG
| Property | BMP | JPG |
|---|---|---|
| Compression | None (uncompressed) | DCT (lossy) |
| Typical file size (1920x1080) | 5-8 MB | 200-500 KB |
| Transparency | 32-bit BMP only | Not supported |
| Web browser support | Limited | Universal |
| Platform support | Windows primarily | Universal |
| Best for | Legacy Windows apps | Web, email, sharing |
//how_it_works
How It Works
Drop your BMP files
Drag and drop or select BMP bitmap files. Supports 8-bit, 24-bit, and 32-bit BMP variants. Even huge files (100MB+) process fine in your browser.
Browser decodes BMP
The browser's native BMP decoder reads the raw pixel data and renders it onto an HTML Canvas at full resolution. Everything stays on your device.
DCT compression to JPG
The Canvas exports as JPG at 92% quality using DCT-based lossy compression. File size shrinks dramatically — typically 90-95% smaller than the BMP source.
Download your JPGs
Your compact JPG files are ready. Same visual quality as the BMP source but dramatically smaller — easy to share, email, or upload anywhere.
// under the hood
BMP stores pixel data uncompressed (typically 24-bit RGB or 32-bit RGBA), making file sizes massive. Our converter uses the browser's native BMP decoder to render the image onto an HTML Canvas, then exports as JPG at 92% quality using the Canvas toBlob API. JPG uses DCT (Discrete Cosine Transform) lossy compression in 8x8 blocks, achieving typical compression ratios of 10:1 to 20:1 vs uncompressed BMP.
//faq
Frequently Asked Questions
- What is BMP format?
- BMP (Bitmap) is a Windows image format from 1990 that stores uncompressed pixel data. Every pixel is stored as raw RGB values, making BMP files massive — often 10-20x larger than a JPG of the same image. BMP is mostly obsolete except in Windows icons and legacy software.
- Why convert BMP to JPG?
- BMP files are huge because they're uncompressed. Converting to JPG typically reduces file size by 90-95% with no visible quality loss. A 25MB BMP photo commonly becomes a 1-2MB JPG that looks identical. JPG is also universally supported while BMP isn't accepted by most modern platforms.
- How much quality is lost?
- We use a 92% JPG quality setting which preserves virtually all visible detail. The DCT-based lossy compression discards information the human eye can't perceive. You'll get a file ~90% smaller than BMP with quality that's visually indistinguishable from the original.
- What about transparency?
- JPG doesn't support transparency. BMP files rarely contain transparency anyway (only 32-bit BMPs do). If your BMP has a transparent background, it will be filled with white in the JPG output. Use our BMP to PNG converter if you need transparency preserved.
- Is my data private?
- Yes. All conversion happens in your browser using the Canvas API. Your BMP files are never uploaded to any server. We have zero access to your images at any point.