Image ToolsFree

BMP to JPG

Convert BMP (Windows Bitmap) images to JPG format for massive file size reduction. BMP files are completely uncompressed — a single BMP can be 20–50 MB. Converting to JPG reduces size by up to 95% with minimal visible quality loss. No signup.

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BMP files · Typically 90%+ smaller after conversion

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Frequently Asked Questions

How much file size can I save converting BMP to JPG?▼
BMP to JPG typically reduces file size by 80–95%. A 20 MB BMP becomes roughly 1–3 MB JPG at 90% quality, with barely perceptible visual difference for most images.
Why are BMP files so large?▼
BMP (Windows Bitmap) stores every pixel as raw color data with no compression whatsoever. A 4000×3000 BMP at 24-bit color is exactly 34.3 MB, regardless of image content.
What JPG quality level is used?▼
92% quality by default. This is visually identical to the original for most photos and illustrations. A quality slider lets you reduce further if smaller file size is the priority.
Is transparency preserved?▼
No. JPG does not support transparency. BMP files with transparency have transparent areas filled with white in the JPG output.
Is the conversion done in the browser?▼
Yes. BMP decoding and JPG encoding happen locally via Canvas. No file is uploaded.