I can see the problem. Image has wrong information in its header. But what to do with it? As I mentioned before, I create context source by another script (PHP script) and php runs context. I have thousands of images so it is impossible to me every single image convert. But I created php gate which try convert images on the fly. When I try this particural image convert it gives me this image: http://cdn-images-squared.tripomatic.com/e46c68903d2c4445f05a0369578c17dd-270.jpg But after context runs this file it falls down with error message: !LuaTeX error: reading JPEG image failed (no JPEG header found) ==> Fatal error occurred, no output PDF file produced! mtx-context | fatal error: return code: 70 Which is even worse, because although the user gets bad PDF it contains some information. In this case there is no pdf created. I looked in gimp for something bad in this image, but it looks ok to me. So do you have any advice what to do? Thanks 2012/11/26 Martin Schröder > 2012/11/26 luigi scarso : > > It has 240x160 pixels and 1ppi, so it's 6,096 meters x 4,06400meters > > I doubt that 1ppi is intended. :-) > > Best > Martin > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to > the Wiki! > > maillist : ntg-context@ntg.nl / > http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > > ___________________________________________________________________________________ >