[pdftex] Re: Best bitmap image format?

Hartmut Henkel hartmut_henkel at gmx.de
Mon Feb 27 08:37:45 CET 2006

On Mon, 27 Feb 2006, Olivier Lefevre wrote:

> What I still don't understand is which image formats are native to PDF
> and pdftex: apparently only JPEG, right? How are images stored inside
> a PDF?

See PDF Reference, section 3.3 Filters. Pdftex has drivers for native
JPEG and PNG embedding, anything else can be embedded as long as it
comes inside a PDF file.

Type  Compression Embedding

JPEG  DCT...      native: copy image relevant stream subset
PNG   zlib        native: uncompress + re-compress, or copy
TIFF  LZW         via PDF file
FAX   CCITT       via PDF file
JBIG2 JBIG2       via PDF file
JPX   JPEG2000    via PDF file

Regards, Hartmut

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