How to convert BMP to JPG online
- 1
Drop your BMP file
Drag and drop your Bitmap Image File file onto the converter, or click to browse your files. You can select up to 5 at once. Nothing leaves your device — conversion happens right here in the browser.
- 2
Hit Convert — it happens locally
Click Convert and watch it go. There's no upload, no server queue, no waiting. The converter runs Bitmap Image File → Joint Photographic Experts Group entirely in your browser tab. Most files finish in 1–3 seconds.
- 3
Download your JPG
Your Joint Photographic Experts Group file is ready. Click Download, or grab a ZIP if you converted a batch. Close the tab and everything disappears — no copies kept anywhere.
BMP vs JPG: format overview
Bitmap Image File
Microsoft · 1987
- Compression
- none
- Transparency
- No
- ✓ No compression — original pixel data preserved
- ✓ Universal Windows support
- ✗ No compression = massive files
Joint Photographic Experts Group
Joint Photographic Experts Group · 1992
- Compression
- lossy
- Color depth
- 8-bit
- Transparency
- No
- ✓ Universal compatibility — supported everywhere
- ✓ Excellent compression for photos
BMP magic bytes: 42 4D
JPG magic bytes: FF D8 FF
Why convert BMP to JPG?
BMP files produced by older Windows software, scanner drivers, or industrial imaging systems are uncompressed by design. A 1920 by 1080 pixel BMP image can easily exceed 6 megabytes, making it impractical for sharing by email, uploading to content management systems like WordPress, or publishing on social platforms like LinkedIn or Twitter. The format also lacks support for progressive loading, which means large BMP files load poorly in web browsers.
JPEG compression was engineered specifically for photographic content, and it excels at reducing file sizes for images that contain gradients, textures, and continuous color transitions. Converting a BMP photo to JPG at a quality setting of 85 percent typically yields a file that is 90 percent smaller while remaining visually indistinguishable from the original at normal viewing sizes. Services like Squarespace, Shopify, and most email marketing platforms work seamlessly with JPG uploads.
When you convert BMP to JPG, you trade the raw uncompressed data for a compressed representation that introduces mild, controlled artifacts. For photographic images, these artifacts are invisible under normal viewing conditions. For images with sharp text, flat color regions, or fine geometric lines, you may notice slight blurring at very high magnification. Setting the quality slider to 90 or above minimizes this effect while still achieving a dramatic reduction in file size compared to the original BMP.
Quality & file size: BMP to JPG
Typical file sizes: BMP 35–40 MB → JPG 2–5 MB.
Both BMP and JPG use lossy compression. We transcode at high quality settings (equivalent to JPG's recommended web quality) to minimize generational loss.
Color depth: BMP supports standard color, JPG supports 8-bit.
Transparency: BMP does not support transparency. JPG does not support transparency — transparent areas become solid white.
Frequently asked questions
Privacy: how FormatDrop handles your files
Your BMP files are converted 100% inside your browser. They are never uploaded to our servers, never stored, and never seen by anyone other than you. This isn't a privacy policy claim — it's an architectural guarantee: our server has no endpoint that receives file bytes.