GIF palette & alpha limits
Still GIF, up to 256 colours. Alpha below 50% becomes transparent; other pixels become opaque.
Convert JPEG 2000 to GIF
- In your browser
- No upload
- Private by design
What happens when you convert JPEG 2000 to GIF?
Sample precision & colour
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
JPEG 2000
Source
JPEG 2000
JPEG 2000
Compression: Lossy & losslessTransparency: YesMetadata: JP2 boxes, ICC, XML (extensions)
Wavelet-based image coding with reversible and irreversible modes. JP2 containers add colour information around the codestream.
Explore JPEG 2000 format →GIF
Target
GIF
Graphics Interchange Format
Compression: LosslessTransparency: YesMetadata: Comments, Application extensions
Indexed-colour images and simple frame animation. GIF uses LZW compression and palette-index transparency.
Explore GIF format →Is JPEG 2000 → GIF right for you?
Good choice when
- GIF fits your delivery use: Simple palette animations.
- A limited palette and binary transparency are acceptable.
- You can validate the destination’s sample precision and colour interpretation.
Probably not when
- You need smooth photographic gradients or partial transparency.
- You require identical samples without a defined colour and precision policy.
JPEG 2000 to GIF conversion details
- GIF palette & alpha limits
- Still GIF, up to 256 colours. Alpha below 50% becomes transparent; other pixels become opaque.
- 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
- JPEG 2000: Lossy & lossless → GIF: Lossless JPEG 2000: JPEG 2000 supports reversible lossless and irreversible lossy coding. A JP2 container, an extended JPX/JPF file and a raw J2K codestream are related but not identical file structures. GIF: LZW compression is lossless for the stored palette indices. Colour reduction before encoding is not lossless for an arbitrary RGB source.
- 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
- JPEG 2000: Component-defined precision → GIF: Up to 256 colours/table
- 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
Why can GIF lose colours despite lossless compression?
Still GIF, up to 256 colours. Alpha below 50% becomes transparent; other pixels become opaque.
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.