PDF Note (Mirror)

Contents
  1. 1. Important document
  2. 2. Tips
    1. 2.1. Reduce the size of PDF doc
    2. 2.2. Change the name of pdf documents
    3. 2.3. Conversion
      1. 2.3.1. Convert BMP to pdf
      2. 2.3.2. Convert JPEG/PNG to pdf
      3. 2.3.3. Convert TIFF to pdf
      4. 2.3.4. Converting DJVU to PDF
        1. 2.3.4.1. .djvu
        2. 2.3.4.2. Conversion
    4. 2.4. epub
    5. 2.5. Powerpoint convert to PDF
    6. 2.6. Word convert to PDF
    7. 2.7. Bookmarks
    8. 2.8. Convert PDF to Text
    9. 2.9. 合并多个PDF文档
  3. 3. PDF app in Linux
  4. 4. Installation of PDFtk/pdftk
  5. 5. Examples
    1. 5.1. pdftk
      1. 5.1.1. Notes
      2. 5.1.2. Ref
      3. 5.1.3. Article Tags
  6. 6. pdftk usage
  7. 7. Best Free PDF Tools | Gizmo’s Freeware

Important document

    ./find_in_pdf.docx
    ./List_of_PDF_Editing_tools_for_Ubuntu.html
    ./pdftk_Learning.docx

Tips

Reduce the size of PDF doc

eval 
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i=large.pdf
pdf2ps ${i} ${i%.pdf}.ps; ps2pdf ${i%.pdf}.ps ${i%.pdf}_Small.pdf
#
i=large.pdf
pdf2ps ${i} ${i%.pdf}.ps
ps2pdf ${i%.pdf}.ps ${i%.pdf}_Small.pdf
#
pdf2ps large.pdf very_large.ps
ps2pdf very_large.ps small.pdf

I had the same problem and found two different solutions (see this thread for more details). Both reduced the size of my uncompressed PDF dramatically.

  • Pixelated (lossy): 
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i=input.pdf
#
i=
convert ${i} -compress Zip ${i%.pdf}_Small.pdf
#
convert input.pdf -compress Zip output.pdf
  • Unpixelated (lossless, but may display slightly differently):
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i=input.pdf
#
i=
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dBATCH -dQUIET -sOutputFile=${i%.pdf}_Small.pdf ${i}
#
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dBATCH -dQUIET -sOutputFile=output.pdf input.pdf

Edit: I just discovered another option (for lossless compression), which avoids the nasty gs command. qpdf is a neat tool that converts PDFs (compression/decompression, encryption/decryption), and is much faster than the gs command:

Ref

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for Input in *.pdf; do gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.6 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile="${Input%.pdf}.PDF" "${Input}"; done
#
# ebook
#
i=
Input=${i}; gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.6 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile="${Input%.pdf}.PDF" "${Input}"
#
# screen
#
i=
Input=${i}; gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.6 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile="${Input%.pdf}.PDF" "${Input}"
#
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.6 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf "input.pdf"
#
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.6 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile=2.pdf "1.pdf"
#
screen - selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
ebook - selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
printer - selects output similar to the Acrobat Distiller "Print Optimized" setting.
prepress - selects output similar to Acrobat Distiller "Prepress Optimized" setting.
default - selects output intended to be useful across a wide variety of uses, possibly at the expense of a larger output file.

Change the name of pdf documents

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for i in *.pdf; do mv ${i} `pdfinfo ${i} | grep "^Title\:\ " | sed "s/Title:          //" | sed 's/\,/\_/g; s/\:/\_/g; s/\ /\_/g' | sed 's/\_\_/\_/g'`.pdf; done

Conversion

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convert *.png target.pdf

Convert BMP to pdf

　　遇到一个例子，无法直接使用下列命令将bmp文件直接转为pdf文件。这些命令涉及：

  • img2pdf
  • mogrify
  • convert (from ImageMagick)

　　bmp文件如下：

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/media/ht/ht_5T/Work/References/Tech/DNA_Amplification/Isothermal_Amp/RCA_Ref/RCA_Ref_4/RCA产物的大小/AFM/Atomic_force_microscopy_analysis_of_RCA_of_plasmid_DNA/Templiphi-Time_course.bmp
　　输出的错误信息如下： 
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convert 1.bmp 1.pdf
convert: not authorized `1.pdf' @ error/constitute.c/WriteImage/1028.
#
mogrify -format pdf 1.bmp
mogrify: not authorized `1.pdf' @ error/constitute.c/WriteImage/1028.
　　**解决方案如下：** 
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mogrify -format jpg 1.bmp # output, 1.jpg
img2pdf 1.jpg -o 1.pdf

Convert JPEG/PNG to pdf

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ls -1 ./*.jpg | xargs -L1 -I {} img2pdf {} -o {}.pdf
ls -1 ./*.png | xargs -L1 -I {} img2pdf {} -o {}.pdf

Convert TIFF to pdf

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tiff2pdf -j -o file_name.pdf file_name.tiff
#
ls -1 ./*.tif ./*.tiff | xargs -L1 -I {} tiff2pdf {} -o {}.pdf; rename 's/\.tiff//' *.pdf; rename 's/\.tif//' *.pdf

Converting DJVU to PDF

.djvu

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sudo apt install djview
djview4 xxx.djbu
  1. Goto Synaptic Package Manager
  2. Install 
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djvulibre-bin libdjvulibre21 okular-extra-backends evince libevdocument3 libevview3
  1. Goto terminal and write
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sudo apt-get install libtiff-tools
  1. Goto the directory where the djvu file is present. Click the right mouse button. Goto “Open In Terminal” option. Click on it. A terminal will open.
  2. In that terminal write

Conversion

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ddjvu -format=pdf file_name.djvu file_name.pdf
for i in *.djvu; do ddjvu -format=pdf ${i} ${i%.djvu}.pdf; done
#
ddjvu -format=tiff file_name.djvu file_name.tiff
#
tiff2pdf -j -o file_name.pdf file_name.tiff

epub

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exiftool *.epub | grep 'Package Metadata Title' | awk -F': ' '{print $2$3$4}' | sed 's/\*/\_/; s/\//\_/; s/\ /\_/g' | sed 's/\_\_/\_/g' > 1.list
#
for i in *.epub; do mv ${i} `exiftool ${i} | grep 'Package Metadata Title' | awk -F': ' '{print $2$3$4}' | sed 's/\*/\_/; s/\//\_/; s/\ /\_/g' | sed 's/\_\_/\_/g'`.epub; done

Powerpoint convert to PDF

eval 
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###############################################
########## 从本行开始复制 #########################
#
# Batch convert all .ppt/.pptx files encountered in folder and all its subfolders
# The produced PDF files are stored in the invocation folder
#
# Adapted from http://stackoverflow.com/questions/16534292/basic-powershell-batch-convert-word-docx-to-pdf
# Thanks to MFT, takabanana, ComFreek
#
# If PowerShell exits with an error, check if unsigned scripts are allowed in your system.
# You can allow them by calling PowerShell as an Administrator and typing
# ```
# Set-ExecutionPolicy Unrestricted
# ```
# Get invocation path
$curr_path = Split-Path -parent $MyInvocation.MyCommand.Path
# Create a PowerPoint object
$ppt_app = New-Object -ComObject PowerPoint.Application
# Get all objects of type .ppt? in $curr_path and its subfolders
Get-ChildItem -Path $curr_path -Recurse -Filter *.ppt? | ForEach-Object {
    Write-Host "Processing" $_.FullName "..."
    # Open it in PowerPoint
    $document = $ppt_app.Presentations.Open($_.FullName)
    # Create a name for the PDF document; they are stored in the invocation folder!
    # If you want them to be created locally in the folders containing the source PowerPoint file, replace $curr_path with $_.DirectoryName
    $pdf_filename = "$($curr_path)\$($_.BaseName).pdf"
    # Save as PDF -- 17 is the literal value of `wdFormatPDF`
    $opt= [Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType]::ppSaveAsPDF
    $document.SaveAs($pdf_filename, $opt)
    # Close PowerPoint file
    $document.Close()
}
# Exit and release the PowerPoint object
$ppt_app.Quit()
[System.Runtime.Interopservices.Marshal]::ReleaseComObject($ppt_app)
########### 程序至此结束 ##########################
###############################################

Word convert to PDF

eval 
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# This will work for doc as well as docx files.

$documents_path = 'c:\doc2pdf'
###############################################
########## 从本行开始复制 #########################
$documents_path = 'C:\20180108' # 此处修改为Word文件的目录
#
cd C:\Temp
$documents_path = 'C:\Temp' # 此处修改为Word文件的目录
$word_app = New-Object -ComObject Word.Application

# This filter will find .doc as well as .docx documents
Get-ChildItem -Path $documents_path -Filter *.doc? | ForEach-Object {

    $document = $word_app.Documents.Open($_.FullName)

    $pdf_filename = "$($_.DirectoryName)\$($_.BaseName).pdf"

    $document.SaveAs([ref] $pdf_filename, [ref] 17)

    $document.Close()
}

$word_app.Quit()
########### 程序至此结束 ##########################
###############################################

Bookmarks

eval 
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#
BookmarkBegin
BookmarkTitle: name
BookmarkLevel: level
BookmarkPageNumber: page number
#
######################################
# Bookmarks import with pdftk
######################################
#
let j=0
for i in *.JPG; do let j+=1; mv $i "${j}.jpg"; done
rm Bookmarks.txt
touch Bookmarks.txt
for i in HPV51*.pdf
do
  echo ${i%.pdf} >> Bookmarks.txt
done
sed -i 's/HPV51\_//g' Bookmarks.txt
pdftk HPV51*.pdf cat output All.pdf
#
rm Bookmarks.list
touch Bookmarks.list
let j=0
for i in `cat Bookmarks.txt`
do
  let j+=1
  echo "BookmarkBegin" >> Bookmarks.list
  echo "BookmarkTitle: "${i} >> Bookmarks.list
  echo "BookmarkLevel: 1" >> Bookmarks.list
  echo "BookmarkPageNumber: " ${j} >> Bookmarks.list
done
#
Bookmark=Bookmarks.list; i=All.pdf; pdftk ${i} update_info ${Bookmark} output ${i%.pdf}_Bookmarked.pdf

Convert PDF to Text

pdftotext[^pdftotext]

[^pdftotext]: How to Convert a PDF File to Editable Text Using the Command Line in Linux

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pdftotext 1.pdf 1.txt
pdftotext -layout 1.pdf 1.txt
#
PDF=
pdftotext -layout ${PDF} ${PDF%.*}.txt

合并多个PDF文档

pdftk

eval 
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pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf

PDF app in Linux

5 Easy & Effective Ways to Edit PDF Documents on Linux

  1. PDF Studio
  2. Master PDF Editor
  3. Calibre + LibreOffice
  4. Scribus
  5. GIMP

Installation of PDFtk/pdftk

How to install pdftk on Ubuntu 18.04 Bionic? - Ask Ubuntu

  • gdebi (highly recommended over GNOME Software/Software Center), install it from the software center or $ sudo apt install gdebi
  • a few dependencies from the artful repositories (.deb files):
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sudo gdebi /media/ht/ht_5T/Stored_Softs/Linux_Softs/Not_Classified/libgcj-common_6.4-3ubuntu1_all.deb
sudo gdebi /media/ht/ht_5T/Stored_Softs/Linux_Softs/Not_Classified/libgcj17_6.4.0-8ubuntu1_amd64.deb
sudo gdebi /media/ht/ht_5T/Stored_Softs/Linux_Softs/Not_Classified/pdftk_2.02-4build1_amd64.deb

Basically the process is opening and installing the .deb files - preferably on gdebi - in the order below. It might be interesting to open pdftk first on gdebi just to see the “impossible dependency” warning. We’re basically installing the dependencies from an older repository, so it’ll run like it did in 17.10. The order is:

After that you might want to check the status of pdftk at the software center - it might say it is not installed; install there or maybe just let it be.

Go to the terminal and check pdftk:

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pdftk

Examples

PDFtk Server Examples

pdftk

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http://mirrors.kernel.org/ubuntu/pool/main/g/gcc-defaults/libgcj-common_6.4-3ubuntu1_all.deb
http://mirrors.kernel.org/ubuntu/pool/main/g/gcc-6/libgcj17_6.4.0-8ubuntu1_amd64.deb
http://mirrors.kernel.org/ubuntu/pool/universe/p/pdftk/pdftk_2.02-4build1_amd64.deb

Collate scanned pages

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pdftk A=even.pdf B=odd.pdf shuffle A B output collated.pdf

or if odd.pdf is in reverse order:

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pdftk A=even.pdf B=odd.pdf shuffle A Bend-1 output collated.pdf

Decrypt a PDF

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pdftk secured.pdf input_pw foopass output unsecured.pdf

Encrypt a PDF using 128-bit strength (the default), withhold all permissions (the default)

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pdftk 1.pdf output 1.128.pdf owner_pw foopass

Same as above, except password baz must also be used to open output PDF

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pdftk 1.pdf output 1.128.pdf owner_pw foo user_pw baz

Same as above, except printing is allowed (once the PDF is open)

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pdftk 1.pdf output 1.128.pdf owner_pw foo user_pw baz allow printing

Join in1.pdf and in2.pdf into a new PDF, out1.pdf

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pdftk in1.pdf in2.pdf cat output out1.pdf

or (using handles):

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pdftk A=in1.pdf B=in2.pdf cat A B output out1.pdf

or (using wildcards):

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pdftk *.pdf cat output combined.pdf

Remove page 13 from in1.pdf to create out1.pdf

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pdftk in.pdf cat 1-12 14-end output out1.pdf

or:

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pdftk A=in1.pdf cat A1-12 A14-end output out1.pdf

When using the Windows command-prompt, it helps to use drag-and-drop from the file manager: drag the input PDF file from the file manager onto the command-prompt, and its full pathname will appear at the prompt.

Apply 40-bit encryption to output, revoking all permissions (the default). Set the owner PW to foopass.

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pdftk 1.pdf 2.pdf cat output 3.pdf encrypt_40bit owner_pw foopass

Join two files, one of which requires the password foopass. The output is not encrypted.

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pdftk A=secured.pdf 2.pdf input_pw A=foopass cat output 3.pdf

Uncompress PDF page streams for editing the PDF in a text editor (e.g., vim, emacs)

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pdftk doc.pdf output doc.unc.pdf uncompress

Repair a PDF’s corrupted XREF table and stream lengths, if possible

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pdftk broken.pdf output fixed.pdf

Burst a single PDF document into pages and dump its data to doc_data.txt

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pdftk in.pdf burst

Burst a single PDF document into encrypted pages. Allow low-quality printing

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pdftk in.pdf burst owner_pw foopass allow DegradedPrinting

Write a report on PDF document metadata and bookmarks to report.txt

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pdftk in.pdf dump_data output report.txt

Rotate the first PDF page to 90 degrees clockwise

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pdftk in.pdf cat 1east 2-end output out.pdf

Rotate an entire PDF document to 180 degrees

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pdftk in.pdf cat 1-endsouth output out.pdf

Article Author: Sid Steward

Notes

Pdftk is a command-line program, so you should use your computer terminal or command prompt when first testing these examples.

Ref

Article Tags

pdftk usage

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合并PDF：
pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf

或者 (使用通配符):
pdftk *.pdf cat output combined.pdf

把多个PDF的不同页面组合成一个新的PDF文档(将one.pdf的前7页，two.pdf的前5页，one.pdf的第8页按先后顺序合并成combined.pdf)
pdftk A=one.pdf B=two.pdf cat A1-7 B1-5 A8 output combined.pdf

旋转PDF的第一页为顺时针90度（向东）（其余页方向不变，2-end表示第2页到最后一页）
pdftk in.pdf cat 1E 2-end output out.pdf

旋转PDF的第一页为逆时针（向西）90度，只提取第一页
pdftk in.pdf cat 1W output out.pdf

选择所有PDF页面180度：
pdftk in.pdf cat 1-endS output out.pdf

使用128强度加密PDF（安全模式，只读）
pdftk in.pdf output mydoc.128.pdf owner_pw foopass

同上，同时给PDF加上访问密码（会弹出一个密码输入框）
pdftk in.pdf output mydoc.128.pdf owner_pw foo user_pw baz

同上，但是运行打印：
pdftk in.pdf output mydoc.128.pdf owner_pw foo user_pw baz allow printing

解密PDF文档(foopass替换成pdf的owner_pw密码)：注意：前提是你得知道pdf的密码所以此功能只是解除所有者的密码，使阅读者不需要输密码
pdftk secured.pdf input_pw foopass output unsecured.pdf

合并两个PDF文档，其中一个是加密的，但最终文档不加密：
pdftk A=secured.pdf mydoc.pdf input_pw A=foopass cat output combined.pdf

解压PDF流，以便文本编辑：（不清楚是干什么用的）
pdftk mydoc.pdf output mydoc.clear.pdf uncompress

压缩PDF：
pdftk mydoc.pdf output mydoc.clear.pdf compress

修复PDF文档
pdftk broken.pdf output fixed.pdf

分解成单页（文件名以pg_开头）
pdftk mydoc.pdf burst

报告PDF信息，输出到文本
pdftk mydoc.pdf dump_data output report.txt

Best Free PDF Tools | Gizmo’s Freeware

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{% if theme.mermaid.enable %} {% endif %}

tag:

    缺失模块。
    1、请确保node版本大于6.2
    2、在博客根目录（注意不是yilia根目录）执行以下命令：
    npm i hexo-generator-json-content --save

    3、在根目录_config.yml里添加配置： 

      jsonContent:
    meta: false
    pages: false
    posts:
      title: true
      date: true
      path: true
      text: false
      raw: false
      content: false
      slug: false
      updated: false
      comments: false
      link: false
      permalink: false
      excerpt: false
      categories: false
      tags: true

Step by step.