Does converting JPG to BMP improve quality?

No. JPG compression is lossy — any artefacts present in the JPG are preserved in the BMP. Converting does not restore lost detail, but it does prevent any additional lossy compression.

Is my image uploaded to a server?

No. All processing uses the browser Canvas API. Your image never leaves your device.

Why is the BMP file so large?

BMP stores every pixel uncompressed at 3 bytes per pixel (RGB). A 1920 × 1080 image produces a ~6 MB BMP file.

What software opens BMP files?

Windows Paint, Photoshop, GIMP, IrfanView, Preview (macOS) and most image editors open BMP natively.

🖼️

JPG to BMP Converter

Convert JPG photos to uncompressed BMP bitmap format in your browser. Instant, private, no server upload required. Free to use.

🖼️ Image Tools Free Browser-based

Tool

Drop a JPG here or browse files

Converts to uncompressed 24-bit BMP — runs entirely in your browser

JPG→ BMP

JPG to BMP — Why Convert?

BMP is the uncompressed Windows bitmap format. Converting a JPG to BMP produces a pixel-perfect uncompressed copy that is compatible with legacy Windows applications, embedded systems, industrial cameras and older software that cannot read JPG directly. The conversion adds no further lossy compression — pixel values from the decoded JPG are written verbatim to the BMP.

BMP Format Specs

Property	Value
Compression	None (BI_RGB)
Colour depth	24-bit RGB
Transparency	Not supported
File size	Width × Height × 3 bytes + 54-byte header

File Size Difference

BMP files are substantially larger than JPG because there is no compression. A 1 MP image (1000 × 1000 pixels) produces a 3 MB BMP file regardless of the original JPG file size. Use BMP only when required by your target software or workflow.

JPG to BMP Converter

JPG to BMP — Why Convert?

BMP Format Specs

File Size Difference

Frequently Asked Questions