How is the way to extract full of partial resource from broke pdf file?
How is the way to extract full of partial resource from broke pdf file?
This is a unique solution? Who know another way?
In my opinion it's not worth to play with repairing broken pdf files, anything could happen, and not guaranteed that the restored file is the same than the original one.
Here are three examples: Recovery for PDF, Advanced PDF Repair or Recovery Toolbox for PDF.
Even if it is not a PDF editor, Illustrator can help sometimes
Recovery Toolbox for PDF is for me. I presonaly donÂ´t recomend to repair a PDF file, belive me, just problems.
P.D. Sorry for my english. Bye.
In my work I get a lot of pdf files by e-mail. Sometimes files are corrupted. But this is not always important. Sometimes it is necessary only in general terms have an idea about the contents. To save time, the question arose. Files - mostly text and few illustrations.
In a complex prepress/press workflow I think the best solution is to create a new PDF from the source application.
I agree w/ the genera consensus----start over and avoid possible issues down the road. I've "saved" a bad pdf and its bitten me in the ass. Never again.
If it cant be opened directly into Illustrator, which edits and saves pdf files natively then I wouldnt bother going elsewhere to fix something that is surely broken, unless ofcourse it was needed and the client was willing to pay!
First, the native file format of Illustrator is PGF (Progressive Graphic Format), which is based on the same object-structure than PDF, but is completely different.
The trick is that the PGF datas are embedded in a PDF structure! So a .AI file begins with a "%PDF-1.x" header, like a real PDF... and this header caused the first wrong interpretation of .AI format, and the first origin of the myth.
Second, Illustrator doesn't save in PDF natively: Illustrator saves natively in its own PGF format, and produce the PDF by using a "PDF Library" that converts the native PGF datas in a PDF.
(like InDesign saves its native datas in "Indd format" and can also export in PDF format using a "PDF Library"...)
Third, Illustrator files are a little bit tricky, because they can be two components files (and they are by defaut), embedding in the same file: a PDF + the native Illustrator PGF datas, giving to these files some extra (and strange) behaviour...
The best way to understand this structure is to read [url=http://rwillustrator.blogspot.com/2006/11/whats-in-file.html]this information[/url], that explains in detail (and in good english!) what's in an Illustrator file...
To make the long story short :
â€¢ saving a file in ".AI" format with the default option "Create PDF Compatible File", makes a file containing the native Illustrator PGF datas + a PDF 1.4... AI datas are "first" and the PDF is "second"...
So, the file has the icon of an Illustrator file, and a double-click on it launches Illustrator: Illustrator then opens its own PGF datas and ignores the PDF...
But it is possible (by right-click or drag-and-drop) to force this file to open in Acrobat, because Acrobat can find the PDF that is "behind" the PGF datas and can open this PDF, ignoring the PGF datas.
â€¢ saving a file in ".PDF" format from Illustrator with the default option "Preserve Illustrator Editing Capabilities" makes a file containing a PDF + the Illustrator native PGF datas... again these 2 component are present, but the PDF is "first" and the AI datas are "second"...
So, the file has the icon of a PDF file, and a double-click on it opens the file in Acrobat (or Preview): Acrobat then opens its own PDF datas and ignores the .AI native PGF datas...
But it is possible (by right-click or drag-and-drop) to force the file to open in Illustrator, because Illustrator can find its own PGF datas "behind" the PDF, but in this case Illustrator opens its own PGF datas, and ignores the PDF.
This special behaviour of Illustrator files, with .AI files being openable by Acrobat and the PDFs being openable by Illustrator achieved to convince people that .AI files are PDF allowing the myth to spread because it was easy to believe and verify for people who stay at the surface of the Illustrator files behaviour... but digging a little bit deeper in this behaviour, mainly by unchecking the defaut options, shows that the myth is wrong, because in fact Illustrator always opens only its own PGF component, and Acrobat always opens only the PDF component.
And that's easy to verify:
- save an .AI file without the "Create PDF Compatible File", and you'll see that this file will NOT open in Acrobat (and you will not be able to import this file in InDesign, nor to rasterize it with Photoshop!!!). Really, you must try it: the result is very interesting!
- save a PDF from an Illustrator CMJN layout containing RVB or duotone linked raster pictures, without the option "Preserve Illustrator Editing Capabilities", and re-open the PDF with Illustrator: you'll see that your file has changed... linked picture are now embedded, colors are changed, and many other issues appear because the PDF has been really opened by Illustrator, and Illustrator is a bad PDF editor!
- save a PDF from Illustrator with the option "Preserve Illustrator Editing Capabilities", then open the PDF with Acrobat, make some changes using PitStop, ignoring the warning dialog-box saying that "This file contains part of informations in Illustrator", save the PDF, and re-open it with Illustrator: you'll see that what you had changed with PitStop hasn't changed in Illustrator... because with PitStop/Acrobat you worked on the PDF component, leaving the .AI component untouched, but when you open the PDF in Illustrator in fact you open the untouched native Illustrator datas component.
So, if you have an Illustrator PDF, saved as PDF with the "Preserve Illustrator Editing Capabilities", YOU CAN open it in Illustrator without any problem, because you will NOT open the PDF, but you will open ONLY the original native .AI datas.
But if you have any other PDF (distilled, exported from InDesign or Quark, or from Word or any other software), you will then force Illustrator to open a real PDF, and then you will have all the problems that occur when trying to edit a PDF with Illustrator:
â€¢ PDF can embed objects in any colorimetric modes together, but Illustrator can handle ONLY ONE mode : RVB or CMJN... so, all colors will be converted in CMJN or RVB, depending of the mode of the objects in the PDF vs the mode set in Illustrator...
For example, a duotone picture black+Pantone will keep its Pantone layer but the black will be converted in CMYK if illustrator is set in CMYK mode!
â€¢ PDF can embed fonts, but Illustrator cannot use them... so, all the fonts will be missing, texts will reflow more or less, and you'll have to work hard to recompose or correct texts fragmented in hundred or thousand of little pieces that can be as little than only 1 letter!
(less the text is fragmented, easier it is to work on it, but bigger is the reflow... and more the text is fragmented, less it reflows but more it is difficult to work on it!!!)
â€¢ PDF is multi-pages, but Illustrator is mono-page... so, to open a 16 pages PDF, you will have to open each page individually, page after page, patiently, and you'll finally get 16 PDF (or .AI) files, that you will then have to recombine together... hope that you have a PDF workflow able to rasterize PDF page-by-page and recombine the rasters, because otherwise:
- if you try to recombine the 16 PDF in 1 PDF using Acrobat you will probably get issues with all the 16 different font subsets embedded in the 16 different PDF...
- and if you import these 16 PDF in 16 pages of InDesign to re-export/distill a PDF, you will probably get the (known) issues of the re-frying!
So, yes you can open a PDF with illustrator, but it's tricky, very tricky... meaning that:
- either you know exactly how PDF and Illustrator interact together, you know what is possible to do, you know what and where are the problems, you know what you have to be careful with, you know what issues you will get, and you know exactly what to do fix them,
- or, if you simply guess that Illustrator can open a PDF because you wrongly believe the urban legend that Illustrator "edits and saves pdf files natively", then you will be tricked by (known) problems you even cannot imagine that they could exist!!!
Last edited by leila; 06-14-2011 at 02:30 PM.
sorry ...only Download the file from ftp