<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Hi, all: <span style="color: rgb(68, 68, 68); font-family: Verdana,Geneva,Arial,Helvetica,sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: bold; letter-spacing: normal; line-height: 21px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; display: inline ! important; float: none;">As is known to everyone, some pdf files are generated from images, i.e, the pdf file text can't be selected and copied, it just contains some images. When pdftotext process this type pdf file, it reports following errors: Error: Missing language pack for 'Adobe-GB1' mapping Error: Missing language pack for 'Adobe-GB1' mapping Error: Unknown font tag 'F0' Error (675): No font in show Error (683): No font in show Error (688): No font in show Error (693): No font in show Error (705): No font in show I wish you can give me some advices. Thank you! Best wishes! </body> </html>