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Old 03-05-2024, 08:36 PM   #1
Shohreh
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Question [SOLVED] Fixing broken PDFs?

Hello,

Calling PDF experts out there.

Are there tools to fix broken PDFs that give out the following errors? Those are very old files whose source files are unavailable.

Thank you.

Code:
C:\>mutool.exe info BAD_01N09.pdf
warning: trying to repair broken xref
warning: repairing PDF document
warning: object missing 'endobj' token
warning: cannot load object (668 0 R) into cache

PDF-1.1
Info object (1 0 R):
<</Creator<BEC382F84A1000761A78DBFD60400FD0E5BB313A>/CreationDate<B2C3F680207E74046B0FBCF8611A0BDE>/Producer<B79AB5D67B2831150973CB9A23474B8CB9EB6E2246AA04F511CE2DCDA47E4ED5AC96>/Title<B398B4C0390C067616>/Author<BA9CA6CB77202B527976FEBE3E4D5688BFAE2F2056D24AF050>/Keywords()/Subject<A096ABCC742C65047913B4ED796F4F9BA2A77C3D4FA212BA>/ModDate<B2C3F680207E74046B0FBCFA63170CDC>>>
Pages: 0

Retrieving info from pages 0-1...
warning: ... repeated 4 times...
warning: Page tree load failed. Falling back to slow lookup
warning: cannot load object (668 0 R) into cache
error: malformed page tree

C:\>mutool.exe info BAD_02N01.pdf
warning: trying to repair broken xref
warning: repairing PDF document
warning: object missing 'endobj' token
warning: cannot load object (1027 0 R) into cache

PDF-1.1
Info object (1 0 R):
<</Creator<CD286D1677E44895E9799DED0F80E91CEC9C5527>/CreationDate<C128196E1D8A3DEF9A03FAEB0CD9EA19>/Producer<C4715A3846DC79F6FA728D8A4F87AD48B0CC0A3FCC9A07CA70638EFE5579B29A69D4>/Title<C0735B2E04F84E95E5>/Author<C97749254AD463B18A77B8AE528DB04CB6894B3DDCE249CF31>/Keywords()/Subject<D37D442249D82DE48A15FAFD15AFAC4AB79F4C31CD921E9A36>/ModDate<C128196E1D8A3CE7980FFBE40FD8E819>>>
Pages: 0

Retrieving info from pages 0-1...
warning: ... repeated 4 times...
warning: Page tree load failed. Falling back to slow lookup
warning: cannot load object (1027 0 R) into cache
error: malformed page tree

C:\>mutool.exe info BAD_02N02.pdf
warning: trying to repair broken xref
warning: repairing PDF document
warning: object missing 'endobj' token
warning: cannot load object (840 0 R) into cache

PDF-1.1
Info object (1 0 R):
<</Creator<E1A7BED95A83AAEF456017C912737171AEC7AE8A>/CreationDate<EDA7CAA130EDDE9D341770CC1024707B>/Producer<E8FE89F76BBB9B8C566B07AE52743526F297F19236C8D01D47395FFC0364502DD062>/Title<ECFC88E1299FACEF49>/Author<E5F89AEA67B381CB266E328A4F7E2822F4D2B09026B09E1806>/Keywords()/Subject<FFF297ED64BFCF9E260C73D9084E2433F4D2AEDE638BD04A11724982>/ModDate<EDA7CAA130EDDE9D341671C0132C757A>>>
Pages: 0

Retrieving info from pages 0-1...
warning: ... repeated 4 times...
warning: Page tree load failed. Falling back to slow lookup
warning: cannot load object (840 0 R) into cache
error: malformed page tree

C:\>mutool.exe info BAD_02N04.pdf
warning: trying to repair broken xref
warning: repairing PDF document
warning: object missing 'endobj' token
warning: cannot load object (730 0 R) into cache

PDF-1.1
Info object (1 0 R):
<</Creator<7DD3FFC84A3C928820410013DB5DE5CA3A91B244>/CreationDate<71D38BB02052E6FA51364716D806E1CF>/Producer<748AC8E67B04A3EB334A30749B5AA19B66C1ED5C47A11721B7B2CFECDFD877364C3E>/Title<7088C9F0392094882C>/Author<798CDBFB770CB9AC434F05508650BC9F6084AC5E57D95924F6>/Keywords()/Subject<6386D6FC7400F7F9432D4203C17DBA88718CBD1705B0067EE1F6C6>/ModDate<71D38BB02052E6FA5137461ADD01E4C7>>>
Pages: 0

Retrieving info from pages 0-1...
warning: ... repeated 4 times...
warning: Page tree load failed. Falling back to slow lookup
warning: cannot load object (730 0 R) into cache
error: malformed page tree

C:\>mutool.exe info BAD_02N05.pdf
warning: trying to repair broken xref
warning: repairing PDF document
warning: object missing 'endobj' token

PDF-1.1
Info object (1 0 R):
<</Creator(H:EASYECCOv02n05a.pm6)/CreationDate(D:19971128153755)/Producer(Acrobat PDFWriter 2.01 for Windows)/Title(H:\\EASYECCO\\v02n05a.pm6)/Author(Stu Bloom)/Keywords()/Subject()/ModDate(D:19971129094835)>>
Pages: 16

Retrieving info from pages 1-16...
warning: cannot load object (503 0 R) into cache
warning: Page tree load failed. Falling back to slow lookup
warning: cannot load object (503 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (503 0 R) into cache
warning: ... repeated 5 times...
warning: non-page object in page tree ()
warning: cannot load object (503 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (502 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (502 0 R) into cache
warning: ... repeated 2 times...
warning: cannot load object (503 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (502 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (503 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (502 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (678 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (678 0 R) into cache
warning: ... repeated 2 times...
warning: cannot load object (503 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (502 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (678 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (503 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (502 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
warning: cannot load object (678 0 R) into cache
warning: ... repeated 3 times...
warning: non-page object in page tree ()
error: cannot find page 4 in page tree
--
Edit: While I'm at it… With at least one file, text I copied from it turns into a series of question marks when pasted elsewhere. Could it due to fonts?

Here's the fonts it used:
Code:
Fonts: Helvetica (Type1)
MSTT31c4a3 (Type1; embedded)
MSTT31c4af (Type1; embedded)
MSTT31c4ba (Type1; embedded)
MSTT31c4c7 (Type1; embedded)
MSTT31c4d4 (Type1; embedded)
MSTT31c4e0 (Type1; embedded)
MSTT31c4eb (Type1; embedded)
MSTT31c4f7 (Type1; embedded)
MSTT31c51e (Type1; embedded)
MSTT31c467 (Type1; embedded)
MSTT31c497 (Type1; embedded)
MSTT31c504 (Type1; embedded)
MSTT31c511 (Type1; embedded)
Times-Roman (Type1)

Last edited by Shohreh; 03-07-2024 at 11:27 AM.
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Old 03-06-2024, 08:25 AM   #2
Quoth
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OCR is sometimes the only solution.

Loads of PDFs simply don't have sane text to copy.

If I can't copy/paste from Okular or similar (Sumatra on Windows) into LO Writer, or Word, then it's time for OCR.
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Old 03-06-2024, 08:42 AM   #3
Shohreh
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I opened the file in Abbyy.

Oddly, it says "The content in this PDF file is protected with a password."

File > Save As > Searchable PDF Document: "The document is already searchable and does not need to be converted."
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Old 03-06-2024, 10:13 AM   #4
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Make a copy with Ghostview, or Print to PDF.
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Old 03-06-2024, 10:24 AM   #5
Shohreh
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Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.
 
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Would you have the Ghostview command handy?

I ran the installer gs10021w64.exe, but no trace of gs.exe in "c:\Program Files\gs\gs10.02.1\bin\", and the following fails:

Code:
"c:\Program Files\gs\gs10.02.1\bin\gswin64c.exe" -o EasyEccoV01N04.IMAGE.pdf -sDEVICE=pdfimage32 -dPDFSETTINGS=/screen EasyEccoV01N04.pdf
'-o' is not recognized as an internal or external command, operable program or batch file.

"c:\Program Files\gs\gs10.02.1\bin\gswin64c.exe" -sOutputFile EasyEccoV01N04.IMAGE.pdf -sDEVICE=pdfimage32 -dPDFSETTINGS=/screen EasyEccoV01N04.pdf
Last OS error: No such file or directoryGPL Ghostscript 10.02.1: Unrecoverable error, exit code 1

Last edited by Shohreh; 03-06-2024 at 11:05 AM.
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Old 03-07-2024, 11:26 AM   #6
Shohreh
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Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.Shohreh can program the VCR without an owner's manual.
 
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A user could provide a different set of files, which open fine. Fixed.

Thank you.
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Old 03-07-2024, 03:24 PM   #7
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Quote:
Originally Posted by Shohreh View Post
Would you have the Ghostview command handy?
I've not used gs (ghostscript) or gv (ghostview) for nearly a decade, so no.

gs (ghostscript) = console utility
gv (ghostview) = GUI that works as a viewer and controls ghostscript, so you don't bother with a command line and arcane arguments.
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