Multiple source images
Only one image is decoded; a concatenated image sequence is not exported as a complete set.
Convert PAM to JPEG 2000
- In your browser
- No upload
- Private by design
What happens when you convert PAM to JPEG 2000?
Encoding mode
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. The output uses the implemented still-image encoder; file size depends on the pixels and format.
PAM
Source
PAM
Portable Arbitrary Map
Compression: UncompressedTransparency: YesMetadata: Header, Comments
Portable Arbitrary Map: simple uncompressed raster samples for image-processing pipelines.
Explore PAM format →JPEG 2000
Target
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 →Is PAM → JPEG 2000 right for you?
Good choice when
- JPEG 2000 fits your delivery use: Specialised scalable imaging.
- You can choose the source image or part needed for delivery.
- You need a transparency-capable destination and will check its supported variant.
- Your receiving application supports the required JPEG 2000 variant.
Probably not when
- You require a complete collection, page set or multipart round trip.
- 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.
PAM to JPEG 2000 conversion details
- Multiple source images
- Only one image is decoded; a concatenated image sequence is not exported as a complete set.
- Transparency representation
- The implemented target supports alpha. Display-pixel processing can round translucent samples; archival sample equality is not promised.
- Encoding mode
- 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. The output uses the implemented still-image encoder; file size depends on the pixels and format.
- 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
- PAM: Uncompressed → JPEG 2000: Lossy & lossless PAM: Netpbm stores these samples without compression. Reducing colour, thresholding or changing maxval can still lose information before storage; text and binary representations change the layout, not its image meaning. 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.
- Transparency
- Transparency is replaced with white by default. Change the background in Advanced options.
- Colour depth
- PAM: maxval up to 65535 → JPEG 2000: Component-defined precision
- 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
Will every source image be exported?
Only one image is decoded; a concatenated image sequence is not exported as a complete set.
Which compression mode will JPEG 2000 use?
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. The output uses the implemented still-image encoder; file size depends on the pixels and format.
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.