pdftk.1

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.TH PDFTK 1 "October 28, 2010"
.\" Please adjust this date whenever revising the manpage.
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.SH NAME
pdftk \- A handy tool for manipulating PDF
.SH SYNOPSIS
\fBpdftk\fR \fI<input PDF files | - | PROMPT>\fR
.br
     [ \fBinput_pw\fR \fI<input PDF owner passwords | PROMPT>\fR ]
.br
     [ \fI<operation>\fR \fI<operation arguments>\fR ]
.br
     [ \fBoutput\fR \fI<output filename | - | PROMPT>\fR ]
.br
     [ \fBencrypt_40bit\fR | \fBencrypt_128bit\fR ]
.br
     [ \fBallow\fR \fI<permissions>\fR ]
.br
     [ \fBowner_pw\fR \fI<owner password | PROMPT>\fR ] 
.br
     [ \fBuser_pw\fR \fI<user password | PROMPT>\fR ]
.br
     [ \fBflatten\fR ] [ \fBcompress\fR | \fBuncompress\fR ]
.br
     [ \fBkeep_first_id\fR | \fBkeep_final_id\fR ] [ \fBdrop_xfa\fR ]
.br
     [ \fBverbose\fR ] [ \fBdont_ask\fR | \fBdo_ask\fR ]
.br
Where:
.br
     \fI<operation>\fR may be empty, or:
.br
     [ \fBcat\fR | \fBshuffle\fR | \fBburst\fR |
.br
       \fBgenerate_fdf\fR | \fBfill_form\fR |
.br
       \fBbackground\fR | \fBmultibackground\fR |
.br
       \fBstamp\fR | \fBmultistamp\fR |
.br
       \fBdump_data\fR | \fBdump_data_utf8\fR |
.br
       \fBdump_data_fields\fR | \fBdump_data_fields_utf8\fR |
.br
       \fBupdate_info\fR | \fBupdate_info_utf8\fR |
.br
       \fBattach_files\fR | \fBunpack_files\fR ]
.br

For Complete Help: \fBpdftk --help\fR
.br
.SH DESCRIPTION
If PDF is electronic paper, then pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses.  Pdftk is a simple tool for doing everyday things with PDF documents.  Use it to:
.sp
.br
* Merge PDF Documents or Collate PDF Page Scans
.br
* Split PDF Pages into a New Document
.br
* Rotate PDF Documents or Pages
.br
* Decrypt Input as Necessary (Password Required)
.br
* Encrypt Output as Desired
.br
* Fill PDF Forms with X/FDF Data and/or Flatten Forms
.br
* Generate FDF Data Stencils from PDF Forms
.br
* Apply a Background Watermark or a Foreground Stamp
.br
* Report PDF Metrics such as Metadata and Bookmarks
.br
* Update PDF Metadata
.br
* Attach Files to PDF Pages or the PDF Document
.br
* Unpack PDF Attachments
.br
* Burst a PDF Document into Single Pages
.br
* Uncompress and Re-Compress Page Streams
.br
* Repair Corrupted PDF (Where Possible)
.SH OPTIONS
A summary of options is included below.
.TP
\fB\-\-help\fR, \fB\-h\fR
Show summary of options.
.TP
.B <input PDF files | - | PROMPT>
A list of the input PDF files. If you plan to combine these PDFs (without
using handles) then list files in the order you want them combined.  Use \fB-\fR 
to pass a single PDF into pdftk via stdin.
Input files can be associated with handles, where a
handle is a single, upper-case letter:

\fI<input PDF handle>\fR\fB=\fR\fI<input PDF filename>\fR

Handles are often omitted.  They are useful when specifying PDF passwords or page ranges, later.

For example: A=input1.pdf B=input2.pdf
.TP
.B [input_pw <input PDF owner passwords | PROMPT>]
Input PDF owner passwords, if necessary, are associated with files
by using their handles:

\fI<input PDF handle>\fR\fB=\fR\fI<input PDF file owner password>\fR

If handles are not given, then passwords are associated with input
files by order.

Most pdftk features require that encrypted 
input PDF are accompanied by the ~owner~ password. If the input PDF
has no owner password, then the user password must be given, instead.
If the input PDF has no passwords, then no password should be given.

When running in \fBdo_ask\fR mode, pdftk will prompt you for a password
if the supplied password is incorrect or none was given.
.TP
.B [<operation> <operation arguments>]
If this optional argument is omitted, then pdftk runs in 'filter' mode.
Filter mode takes only one PDF input and creates a new PDF after
applying all of the output options, like encryption and compression.

Available operations are: \fBcat\fR, \fBshuffle\fR, \fBburst\fR, 
\fBgenerate_fdf\fR, \fBfill_form\fR, \fBbackground\fR, \fBmultibackground\fR, 
\fBstamp\fR, \fBmultistamp\fR, \fBdump_data\fR, \fBdump_data_utf8\fR, 
\fBdump_data_fields\fR, \fBdump_data_fields_utf8\fR, \fBupdate_info\fR, 
\fBupdate_info_utf8\fR, \fBattach_files\fR, \fBunpack_files\fR. Some operations
takes additional arguments, described below.
.RS 3
.TP
.B cat [<page ranges>]
Catenates pages from input PDFs to create a new PDF.
Page order in the new PDF is specified by the order of the given page ranges.
Page ranges are described like this:

\fI<input PDF handle>\fR[\fI<begin page number>\fR[\fB-\fR\fI<end page number>\fR[\fI<qualifier>\fR]]][\fI<page rotation>\fR]

Where the handle identifies one of the input PDF files, and
the beginning and ending page numbers are one-based references
to pages in the PDF file, and
the qualifier can be \fBeven\fR or \fBodd\fR, and the page rotation can be \fBN\fR, \fBS\fR, \fBE\fR, \fBW\fR, \fBL\fR, \fBR\fR, or \fBD\fR.

If the handle is omitted from the page range, then the pages are taken from the first input PDF.

The \fBeven\fR qualifier causes pdftk to use only the even-numbered PDF pages, so \fB1-6even\fR yields pages 2, 4 and 6 in that order.  \fB6-1even\fR yields pages 6, 4 and 2 in that order.

The \fBodd\fR qualifier works similarly to the \fBeven\fR.

The page rotation setting can cause pdftk to rotate pages and documents.  Each option sets the page rotation as follows (in degrees): \fBN\fR: 0, \fBE\fR: 90, \fBS\fR: 180, \fBW\fR: 270, \fBL\fR: -90, \fBR\fR: +90, \fBD\fR: +180. \fBL\fR, \fBR\fR, and \fBD\fR make relative adjustments to a page's rotation.

If no arguments are passed to cat, then pdftk combines all input PDFs in the
order they were given to create the output.

.B NOTES:
.br
* \fI<end page number>\fR may be less than \fI<begin page number>\fR.
.br
* The keyword \fBend\fR may be used to reference the final page of a document instead of a page number.
.br
* Reference a single page by omitting the ending page number.
.br
* The handle may be used alone to represent the entire PDF document, e.g., B1-end is the same as B.

.B Page Range Examples w/o Handles:
.br
\fB1-endE\fR - rotate entire document 90 degrees
.br
\fB5 11 20\fR - take single pages from input PDF
.br
\fB5-25oddW\fR - take odd pages in range, rotate 90 degrees
.br
\fB6-1\fR - reverse pages in range from input PDF

.B Page Range Examples Using Handles:
.br
Say \fBA=in1.pdf B=in2.pdf\fR, then:
.br
\fBA1-21\fR - take range from in1.pdf
.br
\fBBend-1odd\fR - take all odd pages from in2.pdf in reverse order
.br
\fBA72\fR - take a single page from in1.pdf
.br
\fBA1-21 Beven A72\fR - assemble pages from both in1.pdf and in2.pdf
.br
\fBAW\fR - rotate entire in1.pdf document 90 degrees
.br
\fBB\fR - use all of in2.pdf
.br
\fBA2-30evenL\fR - take the even pages from the range, remove 90 degrees from each page's rotation
.br
\fBA A\fR - catenate in1.pdf with in1.pdf
.br
\fBAevenW AoddE\fR - apply rotations to even pages, odd pages from in1.pdf
.br
\fBAW BW BD\fR - catenate rotated documents
.TP
.B shuffle [<page ranges>]
Collates pages from input PDFs to create a new PDF.  Works like the \fBcat\fR operation except that it takes one page at a time from each page range to assemble the output PDF.  If one range runs out of pages, it continues with the remaining ranges.  Ranges can use all of the features described above for \fBcat\fR, like reverse page ranges, multiple ranges from a single PDF, and page rotation.  This feature was designed to help collate PDF pages after scanning paper documents.
.TP
.B burst
Splits a single, input PDF document into individual pages. Also creates a
report named \fBdoc_data.txt\fR which is the same as the output from \fBdump_data\fR.
If the \fBoutput\fR section is omitted, then PDF pages are named: pg_%04d.pdf, 
e.g.: pg_0001.pdf, pg_0002.pdf, etc.  To name these pages yourself, supply a
printf-styled format string via the \fBoutput\fR section.  For example, if you want pages
named: page_01.pdf, page_02.pdf, etc., pass \fBoutput page_%02d.pdf\fR to pdftk.
Encryption can be applied to the output by appending output options such as \fBowner_pw\fR, e.g.:

pdftk in.pdf burst owner_pw foopass
.TP
.B generate_fdf
Reads a single, input PDF file and generates an FDF file suitable for \fBfill_form\fR
out of it to the given output
filename or (if no output is given) to stdout.  Does not create a new PDF.
.TP
.B fill_form <FDF data filename | XFDF data filename | - | PROMPT>
Fills the single input PDF's form fields with the data from an FDF file, XFDF file or stdin. Enter the data filename
after \fBfill_form\fR, or use \fB-\fR to pass the data via stdin, like so:

pdftk form.pdf fill_form data.fdf output form.filled.pdf

After filling a form, the form fields remain interactive unless you also use the \fBflatten\fR
output option. \fBflatten\fR merges the form fields with the PDF pages. You can use \fBflatten\fR 
alone, too, but only on a single PDF:

pdftk form.pdf fill_form data.fdf output out.pdf flatten

or:

pdftk form.filled.pdf output out.pdf flatten

If the input FDF file includes Rich Text formatted data in addition to plain text, then the
Rich Text data is packed into the form fields \fIas well as\fR the plain text.  Pdftk also sets a flag
that cues Acrobat/Reader to generate new field appearances based on the Rich Text data.  That way,
when the user opens the PDF, the viewer will create the Rich Text fields on the spot.  If the
user's PDF viewer does not support Rich Text, then the user will see the plain text data instead.
If you flatten this form before Acrobat has a chance to create (and save) new field appearances,
then the plain text field data is what you'll see.
.TP
.B background <background PDF filename | - | PROMPT>
Applies a PDF watermark to the background of a single input PDF.  Pass the background PDF's
filename after \fBbackground\fR like so:

pdftk in.pdf background back.pdf output out.pdf

Pdftk uses only the first page from the background PDF and applies it to every page of the
input PDF.  This page is scaled and rotated as needed to fit the input page.  You can use \fB-\fR
to pass a background PDF into pdftk via stdin.

If the input PDF does not have a transparent background (such as a PDF created from page scans) then the resulting background won't be visible -- use the \fBstamp\fR operation instead.
.TP
.B multibackground <background PDF filename | - | PROMPT>
Same as the \fBbackground\fR operation, but applies each page of the background PDF to the corresponding page of the input PDF.  If the input PDF has more pages than the stamp PDF, then the final stamp page is repeated across these remaining pages in the input PDF.
.TP
.B stamp <stamp PDF filename | - | PROMPT>
This behaves just like the \fBbackground\fR operation except it overlays the stamp PDF page \fIon top\fR of the input PDF document's pages.  This works best if the stamp PDF page has a transparent background.
.TP
.B multistamp <stamp PDF filename | - | PROMPT>
Same as the \fBstamp\fR operation, but applies each page of the background PDF to the corresponding page of the input PDF.  If the input PDF has more pages than the stamp PDF, then the final stamp page is repeated across these remaining pages in the input PDF.
.TP
.B dump_data
Reads a single, input PDF file and reports various statistics, 
metadata, bookmarks (a/k/a outlines), and page labels to the given output
filename or (if no output is given) to stdout.  Non-ASCII characters are encoded
as XML numerical entities.  Does not create a new PDF.
.TP
.B dump_data_utf8
Same as \fBdump_data\fR excepct that the output is encoded as UTF-8.
.TP
.B dump_data_fields
Reads a single, input PDF file and reports form field statistics to the given output
filename or (if no output is given) to stdout. Non-ASCII characters are encoded
as XML numerical entities. Does not create a new PDF.
.TP
.B dump_data_fields_utf8
Same as \fBdump_data_fields\fR excepct that the output is encoded as UTF-8.
.TP
.B update_info <info data filename | - | PROMPT>
Changes the metadata stored in a single PDF's Info dictionary to match
the input data file. The input data file uses the same syntax as the
output from \fBdump_data\fR. Non-ASCII characters should be encoded as XML
numerical entities. This does not change the metadata stored
in the PDF's XMP stream, if it has one. For example:

pdftk in.pdf update_info in.info output out.pdf
.TP
.B update_info_utf8 <info data filename | - | PROMPT>
Same as \fBupdate_info\fR except that the input is encoded as UTF-8.
.TP
.B attach_files <attachment filenames | PROMPT> [to_page <page number | PROMPT>]
Packs arbitrary files into a PDF using PDF's file attachment features. More than
one attachment may be listed after \fBattach_files\fR. Attachments are added at the
document level unless the optional \fBto_page\fR option is given, in which case
the files are attached to the given page number (the first page is 1, the final 
page is \fBend\fR). For example:

pdftk in.pdf attach_files table1.html table2.html to_page 6 output out.pdf
.TP
.B unpack_files
Copies all of the attachments from the input PDF into the current folder or to
an output directory given after \fBoutput\fR. For example:

pdftk report.pdf unpack_files output ~/atts/

or, interactively:

pdftk report.pdf unpack_files output PROMPT
.RE
.TP
.B [output <output filename | - | PROMPT>]
The output PDF filename may not be set to the name of an input filename. Use
\fB-\fR to output to stdout.
When using the \fBdump_data\fR operation, use \fBoutput\fR to set the name of the
output data file. When using the \fBunpack_files\fR operation, use \fBoutput\fR to set
the name of an output directory.  When using the \fBburst\fR operation, you can use \fBoutput\fR
to control the resulting PDF page filenames (described above).
.TP
.B [encrypt_40bit | encrypt_128bit]
If an output PDF user or owner password is given, output PDF encryption
strength defaults to 128 bits.  This can be overridden by specifying
encrypt_40bit.
.TP
.B [allow <permissions>]
Permissions are applied to the output PDF only if an encryption strength
is specified or an owner or user password is given.  If permissions are
not specified, they default to 'none,' which means all of the following
features are disabled.

The \fBpermissions\fR section may include one or more of the following 
features:
.RS
.TP 
.B Printing
Top Quality Printing
.TP
.B DegradedPrinting
Lower Quality Printing
.TP 
.B ModifyContents
Also allows Assembly
.TP 
.B Assembly
.TP
.B CopyContents
Also allows ScreenReaders
.TP
.B ScreenReaders
.TP
.B ModifyAnnotations
Also allows FillIn
.TP
.B FillIn
.TP
.B AllFeatures
Allows the user to perform all of the above, and top quality printing.
.RE
.TP
.B [owner_pw <owner password | PROMPT>]
.TP
.B [user_pw <user password | PROMPT>]
If an encryption strength is given but no passwords are supplied, then
the owner and user passwords remain empty, which means that the resulting
PDF may be opened and its security parameters altered by anybody.
.TP
.B [compress | uncompress]
These are only useful when you want to edit PDF code in a text editor like vim or emacs.
Remove PDF page stream compression by
applying the \fBuncompress\fR filter. Use the \fBcompress\fR filter to restore compression.
.TP
.B [flatten]
Use this option to merge an input PDF's interactive form fields (and their data) with
the PDF's pages. Only one input PDF may be given. Sometimes used with the \fBfill_form\fR operation.
.TP
.B [keep_first_id | keep_final_id]
When combining pages from multiple PDFs, use one of these options to copy the document ID from either the first or final input document into the new output PDF. Otherwise pdftk creates a new document ID for the output PDF. When no operation is given, pdftk always uses the ID from the (single) input PDF.
.TP
.B [drop_xfa]
If your input PDF is a form created using Acrobat 7 or Adobe Designer, then it probably has XFA data.  Filling such a form using pdftk yields a PDF with data that fails to display in Acrobat 7 (and 6?).  The workaround solution is to remove the form's XFA data, either before you fill the form using pdftk or at the time you fill the form. Using this option causes pdftk to omit the XFA data from the output PDF form.

This option is only useful when running pdftk on a single input PDF.  When assembling a PDF from multiple inputs using pdftk, any XFA data in the input is automatically omitted.
.TP
.B [verbose]
By default, pdftk runs quietly. Append \fBverbose\fR to the end and it 
will speak up.
.TP
.B [dont_ask | do_ask]
Depending on the compile-time settings (see ASK_ABOUT_WARNINGS), pdftk might prompt you for
further input when it encounters a problem, such as a bad password. Override this default behavior
by adding \fBdont_ask\fR (so pdftk won't ask you what to do) or \fBdo_ask\fR (so pdftk will ask you what to do).

When running in \fBdont_ask\fR mode, pdftk will over-write files with its output without notice.
.SH EXAMPLES
.TP 2
.B Collate scanned pages
pdftk A=even.pdf B=odd.pdf shuffle A B output collated.pdf
.br
or if odd.pdf is in reverse order:
.br
pdftk A=even.pdf B=odd.pdf shuffle A Bend-1 output collated.pdf
.TP
.B Decrypt a PDF
pdftk secured.pdf input_pw foopass output unsecured.pdf
.TP
.B Encrypt a PDF using 128-bit strength (the default), withhold all permissions (the default)
pdftk 1.pdf output 1.128.pdf owner_pw foopass
.TP
.B Same as above, except password 'baz' must also be used to open output PDF
pdftk 1.pdf output 1.128.pdf owner_pw foo user_pw baz
.TP
.B Same as above, except printing is allowed (once the PDF is open)
pdftk 1.pdf output 1.128.pdf owner_pw foo user_pw baz allow printing
.TP
.B Join in1.pdf and in2.pdf into a new PDF, out1.pdf
pdftk in1.pdf in2.pdf cat output out1.pdf
.br
or (using handles):
.br
pdftk A=in1.pdf B=in2.pdf cat A B output out1.pdf
.br
or (using wildcards):
.br
pdftk *.pdf cat output combined.pdf
.TP
.B Remove 'page 13' from in1.pdf to create out1.pdf
pdftk in.pdf cat 1-12 14-end output out1.pdf
.br
or:
.br
pdftk A=in1.pdf cat A1-12 A14-end output out1.pdf
.TP
.B Apply 40-bit encryption to output, revoking all permissions (the default).  Set the owner PW to 'foopass'.
pdftk 1.pdf 2.pdf cat output 3.pdf encrypt_40bit owner_pw foopass
.TP
.B Join two files, one of which requires the password 'foopass'. The output is not encrypted.
pdftk A=secured.pdf 2.pdf input_pw A=foopass cat output 3.pdf
.TP
.B Uncompress PDF page streams for editing the PDF in a text editor (e.g., vim, emacs)
pdftk doc.pdf output doc.unc.pdf uncompress
.TP
.B Repair a PDF's corrupted XREF table and stream lengths, if possible
pdftk broken.pdf output fixed.pdf
.TP
.B Burst a single PDF document into pages and dump its data to doc_data.txt
pdftk in.pdf burst
.TP
.B Burst a single PDF document into encrypted pages. Allow low-quality printing
pdftk in.pdf burst owner_pw foopass allow DegradedPrinting
.TP
.B Write a report on PDF document metadata and bookmarks to report.txt
pdftk in.pdf dump_data output report.txt
.TP
.B Rotate the first PDF page to 90 degrees clockwise
pdftk in.pdf cat 1E 2-end output out.pdf
.TP
.B Rotate an entire PDF document to 180 degrees
pdftk in.pdf cat 1-endS output out.pdf
.SH NOTES
The pdftk home page permalink is:
.br
http://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/
.br
The easy-to-remember shortcut is: www.pdftk.com
.SH AUTHOR
Sid Steward (sid.steward at pdflabs dot com) maintains pdftk.  Please email him with questions or bug reports.  Include pdftk in the subject line to ensure successful delivery.  Thank you.