BMP to JPG Converter – Free, No Upload

Drop images here, or tap to select

Supports .bmp · Up to 50 MB each

100% in-browser. Your files never leave your device.

BMP files store every pixel uncompressed, so a single Full HD image takes about 6 MB. Converting BMP to JPG (JPEG) shrinks that to a size you can email or upload, and this page does it in your browser with a quality slider and no upload.

Why BMP files are so large

A 24-bit BMP spends three bytes on every pixel, with no compression at all. A 1920×1080 image is 1920 × 1080 × 3 = 6,220,800 bytes of pixel data plus a 54-byte header, roughly 5.9 MB, whatever the picture shows. A 4000×3000 scan is about 36 MB. BMP still turns up from older versions of Windows Paint, scanner software, industrial cameras, lab equipment and legacy screenshot tools, and many email services and upload forms either reject it or balk at the size.

JPG compresses the same photo or scan by a large factor: a 6 MB BMP photo commonly lands under 1 MB at 85–90% quality. The exact ratio depends on how much fine detail and noise the image contains.

Picking the quality

The slider runs from 10% to 100% and starts at 90%. For photos and scanned documents, 85–90% looks the same as the BMP at normal viewing size. For screenshots with small text, JPG can leave faint ringing around letter edges; keep the quality at 90% or higher, or convert the screenshot with Image to PNG, which stays lossless and is often smaller than a JPG for flat interface graphics. Settings around 70% suit images that only need to be recognisable, such as a photo attached to a support ticket.

What changes in the conversion

The browser decodes the BMP, draws it onto a canvas and encodes a JPG at the chosen quality. Dimensions stay the same: a 1024×768 BMP becomes a 1024×768 JPG. A 32-bit BMP with an alpha channel loses its transparency, since JPG has none, and transparent areas are filled with white. Palette BMPs with 256 colours or fewer are expanded to full colour, which is harmless. BMP files carry no EXIF block, so no metadata is lost. If one file in a batch uses a variant your browser cannot decode, that file shows an error and the rest still convert.

Stays on your computer

Scans and equipment exports are often confidential, such as signed contracts or lab images, so the conversion runs entirely in your browser. The BMP is read from your disk, converted in memory and returned as a JPG download; nothing is uploaded or stored. Add up to 30 files per drop at 50 MB each, enough for a 4000×4000 BMP, and download the JPGs one at a time or as a single ZIP.

How to convert BMP to JPG

Add your files
Drag and drop your BMP files, or click to pick them from your device.
Convert to JPG
Adjust the settings if you need to, then start the conversion.
Download
Save your JPG files one by one or all at once.

Frequently asked questions

How much smaller will the JPG be?: For photos and scans, usually five to fifteen times smaller at 85–90% quality, because BMP stores pixels uncompressed. Images with lots of fine noise compress less; simple graphics compress more.
Is BMP to JPEG the same as BMP to JPG?: Yes. JPG and JPEG are two spellings of the same format. This tool saves files with the .jpg extension, which every system recognises.
Will the colours change?: Not visibly at high quality. JPG stores colour at a lower resolution than brightness, which can soften thin red or blue lines at low settings; at 90% this is rarely noticeable.
Why not convert BMP to PNG instead?: PNG is lossless and the better choice for screenshots, diagrams and anything with sharp text. JPG wins for photos and scans, where it produces far smaller files. The Image to PNG page accepts BMP files if you need the lossless route.
Does it keep the original resolution?: Yes. Width and height are unchanged; only the encoding changes. Resize separately if the destination also has a pixel limit.
Are my files uploaded to a server?: No. The whole conversion runs in your browser using your device's own processor. Your files are never sent anywhere.

Recommended tools

Based on your current tool, you might also find these useful

View all tools

Why BMP files are so large

JPG compresses the same photo or scan by a large factor: a 6 MB BMP photo commonly lands under 1 MB at 85–90% quality. The exact ratio depends on how much fine detail and noise the image contains.

Picking the quality

What changes in the conversion

Stays on your computer

Frequently asked questions

How much smaller will the JPG be?

For photos and scans, usually five to fifteen times smaller at 85–90% quality, because BMP stores pixels uncompressed. Images with lots of fine noise compress less; simple graphics compress more.

Is BMP to JPEG the same as BMP to JPG?

Yes. JPG and JPEG are two spellings of the same format. This tool saves files with the .jpg extension, which every system recognises.

Will the colours change?

Not visibly at high quality. JPG stores colour at a lower resolution than brightness, which can soften thin red or blue lines at low settings; at 90% this is rarely noticeable.

Why not convert BMP to PNG instead?

PNG is lossless and the better choice for screenshots, diagrams and anything with sharp text. JPG wins for photos and scans, where it produces far smaller files. The Image to PNG page accepts BMP files if you need the lossless route.

Does it keep the original resolution?

Yes. Width and height are unchanged; only the encoding changes. Resize separately if the destination also has a pixel limit.

Are my files uploaded to a server?

No. The whole conversion runs in your browser using your device's own processor. Your files are never sent anywhere.