Private image conversion

Convert BMP to JPG

Shrink uncompressed BMP files from scanners, old Windows tools, and legacy exports into shareable JPG images. JPG is lossy, so keep the BMP if you need the original pixels.

Drop BMP files here or choose files from your device

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About BMP and JPG conversion

BMP files are often huge because many of them store raw or lightly compressed pixel data. They still show up from scanners, older drawing programs, medical or industrial tools, and Windows-era workflows that never optimized for web sharing.

Converting BMP to JPG makes a practical copy for email attachments, support tickets, chat, and web forms. The browser decodes the BMP through the existing raster path, paints it to an OffscreenCanvas, and exports a JPG locally.

The smaller size comes from lossy JPG compression. That is usually acceptable for photos and scans meant for viewing, but it can soften text, diagrams, and sharp edges compared with the original BMP.

FAQ

Why are BMP files so large?

Many BMP files store pixel data with little or no compression, so even a modest image can be much larger than a JPG or PNG.

Is BMP to JPG lossless?

No. JPG uses lossy compression, which reduces file size by allowing small visual changes in the exported image.

When should I choose JPG output for BMP?

Choose JPG when you need a smaller file for sharing, upload limits, email, or photo-like scans where exact pixels are not required.

Are BMP files sent to a server?

No. The BMP is read from your device and converted inside the browser worker without an upload step.

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