Select BMP
Choose one or more BMP files from your device.
✦ BMP IMAGES · PROCESSED LOCALLY
Convert BMP to JPG
privately in your browser.
Convert BMP images into compact JPG files directly in your browser. BMP files are uncompressed and can be very large — converting to JPG significantly reduces the file size. Your images remain on your device.
Drop BMP files here
or choose files
BMP files · up to 20 files · max. 75 MB per imageSelected images
Files stay on your device
Files stay on your deviceNo accountNo watermark
BMP TO JPG
From BMP to a compact JPG file
BMP files are often far larger than necessary — JPG can reduce the file size dramatically.
Set JPG quality
JPG is preset. Adjust quality to balance file size and image fidelity.
Save the JPG
Download results individually or collect multiple files in a ZIP archive.
FORMAT KNOWLEDGE
What happens when BMP becomes JPG?
LokalPix reads the BMP without compression and encodes the pixels as lossy JPG. File size typically drops significantly.
BMP
Uncompressed and large
BMP stores pixel values without compression. A 10-megapixel image as BMP can easily exceed 30 MB.
JPG
Lossy and compact
JPG uses lossy compression and is often 10–30 times smaller than BMP for photographs. The chosen quality affects visible artefacts.
IMPORTANT
Transparency is not supported
JPG does not support transparency. Transparent areas in a BMP are placed on a white background.
FORMAT IN DEPTH
BMP and JPG compared
Technical background on the BMP format and the conversion.
How BMP is structured
BMP (Windows Bitmap) is an uncompressed raster format. Every pixel value is stored directly. This makes BMP simple to read but results in very large files — especially at high resolutions.
When JPG makes sense
JPG uses the discrete cosine transform (DCT) and reduces image detail that is less noticeable to the human eye. For photographs and natural images, JPG is far more compact at comparable visible quality.
How much space JPG saves
An uncompressed 3840×2160-pixel BMP (24-bit) takes up around 24 MB. A JPG of the same image at 90 % quality is typically under 4 MB.
What is lost?
JPG encoding is lossy. Fine detail and sharp edges may show artefacts. Transparency is removed. Metadata are not transferred by default.
FREQUENT QUESTIONS
Questions about BMP to JPG
Answers about quality, privacy, and format limitations.
How much smaller will the file be?
It depends on the image content and JPG quality. Typically a BMP is reduced to 5–15 % of its original size by JPG conversion.
What happens to transparent BMP areas?
JPG does not support transparency. Transparent pixels receive a white background during export.
Which JPG quality should I choose?
90 percent is a practical starting point. Lower it for smaller files; then check fine detail for artefacts.
Are resolution and aspect ratio preserved?
Yes. LokalPix does not intentionally change the pixel dimensions during this conversion.
Are metadata preserved?
Metadata are removed by default. BMP-specific fields are not transferred to the JPG output.
Can I convert several BMP files?
Yes. Up to 20 files can be processed in one batch and downloaded individually or together as a ZIP archive.
PRIVACY BUILT IN
Your images belong to you.
Conversion uses your browser's built-in functions. There is no image upload and no cloud storage.
Technology and data flow in detail →- ✓ Processing in your browser
- ✓ No server-side image storage
- ✓ No user account