Convert BMP to JPEG XL

Source · BMP
Target · JPEG XL

Drop a BMP file here

or choose files from your device

Advanced options
80
  • Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

Enable JavaScript to convert files locally.

  • In your browser
  • No upload
  • Private by design

What happens when you convert BMP to JPEG XL?

Encoding mode

Lossless pixels, lossy pixels and reversible recompression of an eligible JPEG bitstream are separate modes. Exact JPEG reconstruction requires its reconstruction data, not just matching rendered pixels. Quality defaults to 80; adjust it in Advanced options. File size depends on the image and encoder.

Sample precision & colour

Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

BMP

Source

BMP

Windows Bitmap

Compression: Depends on variantTransparency: YesMetadata: DIB header, ICC (V5)

Windows raster storage with several DIB header versions. Simple uncompressed pixels are common, but alpha and compression vary.

Explore BMP format →
JPEG XL

Target

JPEG XL

JPEG XL Image Coding System

Compression: Lossy & losslessTransparency: YesMetadata: Exif, XMP, ICC, JUMBF

A JPEG-family image system for lossy and lossless pictures, high precision, alpha and animation.

Explore JPEG XL format →

Is BMP → JPEG XL right for you?

Good choice when

  • JPEG XL fits your delivery use: High-precision photographic storage.
  • You need a transparency-capable destination and will check its supported variant.
  • Your receiving application supports the required JPEG XL variant.
  • You can validate the destination’s sample precision and colour interpretation.

Probably not when

  • You assume format-level alpha support guarantees matching transparent edges.
  • You need a guaranteed output file size or archival pixel equality. Encoder settings do not guarantee either.
  • You require identical samples without a defined colour and precision policy.

BMP to JPEG XL conversion details

Transparency representation
The implemented target supports alpha. Display-pixel processing can round translucent samples; archival sample equality is not promised.
Encoding mode
Lossless pixels, lossy pixels and reversible recompression of an eligible JPEG bitstream are separate modes. Exact JPEG reconstruction requires its reconstruction data, not just matching rendered pixels. Quality defaults to 80; adjust it in Advanced options. File size depends on the image and encoder.
Sample precision & colour
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Metadata & colour
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Compression
BMP: Depends on variant → JPEG XL: Lossy & lossless BMP: BMP may be uncompressed or use a header-selected encoding. Alpha is header-dependent; 32 bits alone do not establish transparency support in the receiving application. JPEG XL: Lossless pixels, lossy pixels and reversible recompression of an eligible JPEG bitstream are separate modes. Exact JPEG reconstruction requires its reconstruction data, not just matching rendered pixels.
Transparency
Transparency is replaced with white by default. Change the background in Advanced options.
Animation
Still image output. Animated files use only the first frame; animation is not preserved.
Colour depth
BMP: 1 / 4 / 8 / 16 / 24 / 32 bpp → JPEG XL: High-bit-depth samples
HDR
JPEG XL: Supported
Layers
JPEG XL: Frame blending; not PSD editing
Dimensions
Rendered image dimensions are retained within the converter limits; this tool does not offer resizing. Orientation handling depends on the source decoder.
Metadata
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

Common questions

Which compression mode will JPEG XL use?

Lossless pixels, lossy pixels and reversible recompression of an eligible JPEG bitstream are separate modes. Exact JPEG reconstruction requires its reconstruction data, not just matching rendered pixels. Quality defaults to 80; adjust it in Advanced options. File size depends on the image and encoder.

Are bit depth and colour values guaranteed to match?

Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

Will metadata and colour profiles be retained?

Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.