Convert BMP to JPG — Shrink Files by 95%

Where BMP files still come from

In every one of those cases the BMP was chosen because it is trivially simple to write, not because anyone needed the file to be that large.

• Older Windows applications and the classic Paint save dialog.
• Scanner and fax software defaults, especially on office multifunction devices.
• Screen-capture utilities configured for lossless output.
• Industrial, medical and laboratory equipment exporting raw frames.
• Game and CAD asset pipelines that use uncompressed textures.

How much smaller

BMP size is arithmetic, not compression: width times height times bytes per pixel, plus a small header. A 24-bit 1920 by 1080 image is always about 5.9 MB regardless of what it shows.

When to choose PNG instead

If the BMP is a screenshot, a scan of text or a diagram, PNG will also shrink it enormously — often to a tenth — while staying lossless and keeping every letter sharp. Choose JPG for photographs and PNG for anything where edges matter.

Privacy

Nothing is uploaded. The file is decoded and re-encoded by your own browser using the Canvas API, so the image never leaves your device and there is no queue, no size cap and no account.