Re: re-generate the PDF with standard non-embedded fonts

I think that subset fonts have only the characters that are used, renumbered so there are no holes. I have English PDFs with the same issue that they are readable on the screen, but both ghostscript ps2ascii and poppler pdftotext pass a sequence of control characters. Acrobat can sometimes extract readable text. I am not sure if Adobe applications have a way of saving the original glyph positions when they make the PDF or if the original text is in comments for OCR. If CPU time is not an issue, you could try rasterizing the PDF and running it through an OCR like tesseract or cuneiform.


________________________________
From: 王海生-软件研发部 <[email protected]>
Sent: Wednesday, October 12, 2016 12:31 PM
To: William Bader
Cc: gs-devel
Subject: Re: [gs-devel] re-generate the PDF with standard non-embedded fonts

let me  explain exactly what i want here  .i am using xpdf to convert pdf files into html or txt
i have a original pdf attached.
root@6334724bdee5:/tmp# pdffonts 1.pdf

name                                 type              encoding         emb sub uni object ID
------------------------------------ ----------------- ---------------- --- --- --- ---------
SRPUEP+SimSun                        TrueType          WinAnsi          yes yes yes     13  0
root@6334724bdee5:/tmp# pdfinfo 1.pdf
Creator:        Online2PDF.com
Producer:       Online2PDF.com
CreationDate:   Sat Aug 13 07:42:20 2016 UTC
Tagged:         no
UserProperties: no
Suspects:       no
Form:           none
JavaScript:     no
Pages:          1
Encrypted:      no
Page size:      594.75 x 419.25 pts
Page rot:       0
File size:      31707 bytes
Optimized:      no
PDF version:    1.4
root@6334724bdee5:/tmp# pdftohtml  1.pdf  1-output.html
as https://github.com/mozilla/pdf.js/issues/7712 suggest "Looks like PDF removed character encoding ",
is there any way to recreate this pdf through original one  ?then I can copy the text from it instead of mess

http://stackoverflow.com/questions/12703387/pdf-font-encoding-why-cant-i-copy-text-from-a-pdf
[http://cdn.sstatic.net/Sites/stackoverflow/img/[email protected]?v=73d79a89bded&a]<http://stackoverflow.com/questions/12703387/pdf-font-encoding-why-cant-i-copy-text-from-a-pdf>

PDF Font encoding -- why can't I copy text from a PDF ...<http://stackoverflow.com/questions/12703387/pdf-font-encoding-why-cant-i-copy-text-from-a-pdf>
stackoverflow.com
After converting a PDF file, I cannot copy the text from it any more. All I get are unreadable characters which make no sense whatsoever. The font is French Script MT ...




------------------ Original ------------------
From:  "William Bader"<[email protected]>;
Date:  Tue, Oct 11, 2016 11:42 PM
To:  "王海生-软件研发部"<[email protected]>;
Cc:  "gs-devel"<[email protected]>;
Subject:  Re: [gs-devel] re-generate the PDF with standard non-embedded fonts


There are tools for parsing PDFs like the python tools listed at https://www.binpress.com/tutorial/manipulating-pdfs-with-python/167


You might be able to load the PDF, remove the objects with the embedded fonts, and write a new file, but if the embedded fonts are subsets or have non-standard encodings, the text might become unintelligible.

________________________________
From: gs-devel <[email protected]> on behalf of 王海生-软件研发部 <[email protected]>
Sent: Tuesday, October 11, 2016 11:16 AM
To: Ken Sharp
Cc: gs-devel
Subject: Re: [gs-devel] re-generate the PDF with standard non-embedded fonts

thx for clarifying that
have you ever heard of other tools may deal with this?


------------------ Original ------------------
From:  "Ken Sharp"<[email protected]>;
Date:  Tue, Oct 11, 2016 11:03 PM
To:  "王海生-软件研发部"<[email protected]>;
Cc:  "gs-devel"<[email protected]>;
Subject:  Re: [gs-devel] re-generate the PDF with standard non-embedded fonts

At 22:54 11/10/2016 +0800, =?utf-8?B?546L5rW355SfLei9r+S7tueglOWPkemDqA==?=
wrote:
>no  these  original pdf files are coming from other places, which out of
>my  control. if some character use a embedding font ,i want to these
>characters using  standard fonts  instead of embedding font

Then you cannot use Ghostscript.