Ypdf

We present Ypdf, a PDF document processing application that combines the best features of existing solutions and provides the most popular and requested functionality for free to its users.

Unlike many other projects, Ypdf is a free, open source and cross-platform tool that has both a CLI and a graphical version, so that it is convenient for both command-line lovers and people who prefer graphical shells. Ypdf can also be used as a library providing all of the presented functionality, which can be used without complicated configuration.

In addition, Ypdf has no restrictions on the maximum number of files or their pages to be processed and the maximum size of these files. It also provides the ability to fine-tune each of its functions, which allows you to achieve almost any intended result.

Confidentiality is also an important detail. Ypdf takes care of the safety of user data, does not collect any user data, does not perform any actions without the knowledge and consent of the user, does not require access to the Internet and works exclusively locally in its own directory (that is, it does not add anything extra to the operating system).

In conclusion, the project is aimed at ensuring maximum ease of use of the program, contains documentation that details all the functionality with multiple examples, does not contain anything superfluous and distracting.

Start of use

Tool features

With this tool you will be able to perform the following actions:

• Split PDF document
• Merge PDF documents
• Compress PDF document
• Copy PDF document
• Remove pages from PDF document
• Move PDF document page
• Reorder PDF document pages
• Rotate PDF document pages
• Crop PDF document pages
• Divide PDF document pages
• Add page numbers to PDF document
• Add watermark to PDF document
• Remove watermark from PDF document
• Convert images to PDF document
• Convert text to PDF document
• Extract images from PDF document
• Extract text from PDF document
• Set password to PDF document
• Remove password from PDF document
• Compress images

Release usage

To use the built project, follow these steps:

1. Choose the release.
2. Download and unzip the archive with the version for your operating system and architecture.
3. Move the folder to any place convenient for you. The tool does not create any files outside of its directory.
4. Go to this folder and run the executable file.

You can also create a shortcut to the executable file and put it in a convenient place for you.

Please note that if you want to run the CLI version of the tool, run the executable file from the console. For example, you can find out the version of the tool using the on of the command below.

On Windows.

ypdf --version

On Linux and Mac.

./ypdf --version

Desktop vesion of the tool can also be launched from the console/terminal using the on of the command below.

On Windows.

YpdfDesktop

On Linux and Mac.

./YpdfDesktop

Build from source

We will build the project using dotnet. But you can also use the IDE tools, then the project will be built in one click of the corresponding button.

First, clone the repository.

git clone https://github.com/yakovypg/Ypdf.git

Go to the project folder.

cd Ypdf

Build the project.

dotnet build -c Release

With the help of this command, all projects were built (CLI version, Desktop version, etc.). Now you can already run, for example, the CLI version of the tool.

dotnet run --project Applications/ypdf

Or, for example, the Desktop version of the tool.

dotnet run --project Applications/YpdfDesktop

You can also publish the project. For example, with the help of this command you can publish the CLI version of the tool.

dotnet publish Applications/ypdf -c Release -o pathToPublishFolder

Or, for example, the Desktop version of the tool.

dotnet publish Applications/YpdfDesktop -c Release -o pathToPublishFolder

The published project is runtime-dependent. That is, to run it, it is necessary that .NET runtime is installed on your system. You can run the CLI version of the tool with the following command.

dotnet pathToPublishFolder/ypdf.dll

Or the Desktop version of the tool with the following command.

dotnet pathToPublishFolder/YpdfDesktop.dll

You can also publish the project with the --self-contained parameter. Then, to run the tool, it is not required that .NET runtime is installed on your system. To publish a project with this parameter, you should also specify the target platform and architecture using -r parameter. For example, we will publish a project for linux-x64.

You can publish CLI version of the tool with the following command.

dotnet publish Applications/ypdf -c Release -o pathToPublishFolder --self-contained True -r linux-x64

Or Desktop version of the tool with the following command.

dotnet publish Applications/YpdfDesktop -c Release -o pathToPublishFolder --self-contained True -r linux-x64

A published project can be run without dotnet. To do this, navigate to the folder where you published the project and enter one of the commands below.

On Windows.

ypdf --version

YpdfDesktop

On Linux and Mac.

./ypdf --version

./YpdfDesktop

Development

The project is developed for the .NET 6.0 platform. To continue development, you will need the .NET SDK and .NET Runtime.

Basics

• PDF document page numbers start at 1.
• To perform some actions on a PDF document, it is necessary that it be without a password.
• To perform some actions on a PDF document, it is necessary that python 3 and some of its packages are installed.
• To perform some actions on a PDF document, it is necessary that java 8 is installed.

Python packages installation

First, upgrade pip.

pip install --upgrade pip

Next, install all the necessary packages with the following command.

pip install -r requirements.txt

There is no need to install specific versions of packages. However, the tool has been tested against those specified in the corresponding file.

You can use a python virtual environment. To do this, you first need to create it. For example, this can be done with the following command.

python3 -m venv pathToEnvironment

Next, you need to activate the virtual environment.

On Windows

pathToEnvironment\Scripts\activate.bat

On Linux and Mac.

source pathToEnvironment/bin/activate

Now you can install the necessary components in the created virtual environment.

pip install -r requirements.txt

And then run the tool in it using the commands described earlier.

How to use CLI version

Basics

The most important parameters

• You can specify the path to the input file using the -i parameter.
• You can specify the path to the output file using the -o parameter.
• You can specify the path to the output directory using the -O parameter.
• You can specify the paths to multiple files using the -f parameter multiple times.
• You can specify the paths to directories from which files will be taken using the --files-from parameter.
• You can specify the pattern to match files taken from the directories specified by the --files-from parameter using the --file-pattern parameter.

Font configuration

• You can specify font size, font family, font color and font opacity after the -s, --font-family, --font-color and --font-opacity parameters.
• You can also specify your own font. To do this, you need to specify the font path after the --font-path parameter (and the encoding after the --font-encoding parameter, if necessary).

Parameters parsing

• The range can be represented by either one number or two. The numbers are separated by the '-' symbol (the first number means the start of the range and the second number means the end of the range).
• The page order should be represented as a sequence of numbers or ranges separated by commas. These items mean the page numbers through which the page order is determined.
• The rotation should be represented as two elements separated by the ':' symbol. The first element means the set of comma-separated page numbers (that can be represented either as a single number or as range) and the second element means the angle to which this pages should be rotated.
• The cropping should be represented as two elements separated by the ':' symbol. The first element means the set of comma-separated page numbers (that can be represented either as a single number or as range) and the second element means the pair of points separated by comma, which corresponds to the lower-left and upper-right corners of the rectangle to be cut.
• The division should be represented as two elements separated by the ':' symbol. The first element means the set of comma-separated page numbers (that can be represented either as a single number or as range) and the second element means the pair of the orientation of the division and the offset of the central line of the division.The shift is a floating-point number (you can not explicitly specify it, in this case, write only the orientation, the shift will be automatically set to 0). The parameter value is either the string 'vertical' or 'horizontal'.
• The content shift should be represented as two elements separated by the ':' symbol. The first element means the set of comma-separated page numbers (that can be represented either as a single number or as range) and the second element means the pair of comma-separated numbers (the first number means a horizontal shift and the second means a vertical shift).
• The splitting part can be represented by either a number or a simple expression that uses only multiplication.
• The page size can be represented either by a special name or by two numbers separated by the 'x' symbol (the first number means the page width, and the second number means the page height).
• The page increase should be represented as four numbers separated by commas. The first number means an increase to the left, the second number means an increase to the top, the third number means an increase to the right, the fourth number means an increase to the bottom.
• The margin can be represented by either one number (this number will be an indent on all sides), two numbers (the first number will be an indent on the left and right, and the second number will be an indent on the top and bottom), or four numbers (the first number will be an indent on the left, the second number will be an indent on the top, the third number will be an indent on the right, the fourth number will be an indent on the bottom).
• The image extension should be represented without a dot.
• You can get special names for some parameters using "ypdf --help".
• Floating point numbers are converted depending on your environment (that is, the fractional part is separated by a dot or comma depending on your environment).

Get help

Getting the list of parameters with explanations.

ypdf --help

Get version

Getting the current tool version.

ypdf --version

Get guide

Getting the guide.

ypdf --guide

Global config

You can get the current global configuration using the --show-config parameter.

ypdf config --show-config=true

You can save the current global configuration using the --save-config parameter.

ypdf config --save-config=true

You can reset the current global configuration using the --reset-config parameter. In this case, the configuration will be automatically saved.

ypdf config --reset-config=true

To set values for global configuration variables, use the parameters used to set local values in conjunction with the --save-config parameter.

ypdf config --python-alias=python3 --save-config=true

The following global variables are available:

• python-alias

Split PDF document

Splitting the PDF document.

Splitting ranges are specified after the -p parameter. Parts of the PDF document will be placed in a directory that can be specified after the -O parameter. Here you can read about the format of the input parameters.

ypdf split -i inputPath.pdf -O outputDirectoryPath -p 1-3 -p 6 -p 8-10

If you do not specify splitting ranges, the PDF document will be split into parts by default size.

ypdf split -i inputPath.pdf -O outputDirectoryPath

You can also specify the size of these parts using the --spit-part parameter. It can be either a number or a simple expression that uses only multiplication.

ypdf split -i inputPath.pdf -O outputDirectoryPath --split-part=1024*1024*3

Merge PDF documents

Merging the PDF documents.

ypdf merge -f inputPath1.pdf -f inputPath2.pdf -o outputPath.pdf

You can also specify the directory from which the files will be taken using the --files-from parameter and the pattern that these files should satisfy using the --file-pattern parameter.

ypdf merge --files-from=pathToDir1 --files-from=pathToDir2 --file-pattern=*.pdf -o outputPath.pdf

Compress PDF document

Compressing the PDF document by compressing the images contained in it.

To perform this action, it is necessary that python 3 and some of its packages are installed.

ypdf compress -i inputPath.pdf -o outputPath.pdf

You can specify image quality factor (from 0 to 1), image size factor (from 0 to 1) and images extension after the --image-quality, --image-size-factor and -E parameters.

JPEG is the default image format. Therefore, images with transparency can be distorted. To avoid this, use a different format (for example, PNG). However, other formats give a much lower compression ratio.

ypdf compress -i inputPath.pdf -o outputPath.pdf --image-quality=0.75 --image-size-factor=0.5 -E jpg

Before compression, by default, a check is performed to ensure that the extracted images actually reduce their size with the specified compression parameters. If there is no reduction, the document is not compressed and the corresponding message is displayed. To disable this check, you need to set the --check-compression-validity parameter to False.

ypdf compress -i inputPath.pdf -o outputPath.pdf --check-compression-validity=false

You can also check if the document can be compressed using the following command

ypdf can-compress -i inputPath.pdf

It is worth noting that the compression check function has some error. This is especially true when image compression leads to a small reduction in file size.

The compression function is implemented without any special image compression methods or the structure of the PDF document as a whole. First of all, this function is designed to compress documents containing uncompressed images (for example, to compress a book containing high-quality images). Due to this implementation, document compression will not reduce the file size if the document originally contained sufficiently compressed or lightweight images.

Copy PDF document

Copying the PDF document.

ypdf copy -i inputPath.pdf -o outputPath.pdf

Remove pages from PDF document

Removing the specified pages from the PDF document.

Pages are specified after the -p parameter and can be either single numbers or ranges. Here you can read about the format of the input parameters.

ypdf remove-pages -i inputPath.pdf -o outputPath.pdf -p 1-3 -p 5 -p 7-10

Move PDF document page

Moving the PDF document page.

You should specify the page number to be moved using the -F parameter and the page number to which the page should be moved using the -T parameter.

ypdf move-page -i inputPath.pdf -o outputPath.pdf -F 5 -T 10

Reorder PDF document pages

Reordering the PDF document pages.

The page order is specified after the --page-order parameter. Make sure that the page order contains all the pages of the PDF document. Here you can read about the format of the input parameters.

For example, with this command you will change the page order from 1,2,3,4,5 to 5,3,2,1,4.

ypdf reorder-pages -i inputPath.pdf -o outputPath.pdf --page-order=5,3-1,4

Rotate PDF document pages

Rotating the PDF document pages.

You can rotate all pages of a PDF document by specifying after the -a parameter the angle you want the pages to be rotated. It is possible to rotate only by an angle that is a multiple of 90 degrees.

ypdf rotate -i inputPath.pdf -o outputPath.pdf -a 90

You can also rotate specific pages of a PDF document to a specific angle. To do this, you need to specify the rotations (the page number and the angle by which you want to rotate the specified page) using the -r parameter. Here you can read about the format of the input parameters.

For example, with this command you will rotate the first and second pages by 90 degrees, and the fifth page by 180 degrees.

ypdf rotate -i inputPath.pdf -o outputPath.pdf -r 1-2:90 -r 5:180

Crop PDF document pages

Cropping the PDF document pages.

You can crop specific pages of a PDF document by the specific rectangle. To do this, you need to specify the croppings (the page number and corners of rectangle by which you want to crop the specified page) using the --cropping parameter. Here you can read about the format of the input parameters.

For example, with this command you will crop the first and third page by rectangle, the lower-left corner of which is a point (30;40), and the upper-right corner is a point (60;60).

ypdf crop -i inputPath.pdf -o outputPath.pdf --cropping=1,3:(30;40),(60;60)

Divide PDF document pages

Dividing the PDF document pages.

You can divide specific pages of a PDF document into two parts. To do this, you need to specify the divisions (the page number, orientation of the division and the offset of the central line of the division) using the --division parameter. Here you can read about the format of the input parameters.

For example, with this command you will divide the first page into two equal parts horizontally and the third and fourth pages into two parts vertically with a shift of the dividing line by 100 pixels to the right (the right part will be 100 pixels smaller than the left).

ypdf divide -i inputPath.pdf -o outputPath.pdf --division=1:horizontal --division=3-4:vertical,100

Add page numbers to PDF document

Adding page numbers to the PDF document.

ypdf add-page-numbers -i inputPath.pdf -o outputPath.pdf

You can horizontal alignment, vertical alignment, margins, considering left page margin, considering top page margin, considering right page margin, considering bottom page margin and text presenter after the --h-num-alignment, --v-num-alignment, -m, --left-page-margin, --top-page-margin, --right-page-margin, --bottom-page-margin and --num-presenter parameters. Here you can read about the format of the input parameters.

ypdf add-page-numbers -i inputPath.pdf -o outputPath.pdf --h-num-alignment=left --v-num-alignment=top -m 0,10 --left-page-margin=true --top-page-margin=true --right-page-margin=true --bottom-page-margin=true --num-presenter=verbal

You can also configure the font.

ypdf add-page-numbers -i inputPath.pdf -o outputPath.pdf -s 24 --font-family=times_bold --font-color=blue --font-opacity=0.5

You can increase the size of the PDF document pages and put the page numbers in the resulting space. To do this, you need to specify the page increase using the --page-increase parameter and the location mode using --num-location-mode parameter. You can also specify the color with which the resulting space will be filled using the --fill-color parameter.

ypdf add-page-numbers -i inputPath.pdf -o outputPath.pdf --fill-color=green --page-increase=0,0,0,40 --num-location-mode=increase_bottom

On some PDF documents, when the page is increased on the left, there is sometimes an unexpected shift of the first or all page numbers at once by about 50 pixels to the right. To remove this shift, specify the content shift that will smooth out the unexpected shift using the --content-shift parameter.

ypdf add-page-numbers -i inputPath.pdf -o outputPath.pdf --content-shift=1-10:-50,0

Add watermark to PDF document

Adding watermark to the PDF document.

You can specify the pages on which to place the watermark using the -p parameter. If page numbers are not specified, the watermark will be placed on all pages of the PDF document. Here you can read about the format of the input parameters.

ypdf add-watermark -i inputPath.pdf -o outputPath.pdf -p 1 -p 5-10

You can specify text, rotation angle, width, height, lower left point, text alignment, horizontal text alignment and watermark container vertical alignment after the -w, -a, --watermark-width, --watermark-height, --watermark-pos, watermark-text-alignment, watermark-text-h-alignment and watermark-container-v-alignment parameters.

You can also configure the font.

The watermark is placed in an enclosing rectangle that rotates along with the text. If the text does not fit into this rectangle, the watermark will not be added. By default, an attempt is made to center the watermark by shifting the position of the lower-left corner. But centering can be broken during turns or when a non-minimal enclosing rectangle is specified. But you can always specify the position of the lower-left corner manually using the --watermark-pos parameter.

Please note that it is important to specify the width and height of the watermark text in order to properly draw and align it.

ypdf add-watermark -i inputPath.pdf -o outputPath.pdf -w "My watermark" -s 72 --font-family=times_bold --font-color=black -a 60 --font-opacity=0.5 --watermark-width=500 --watermark-height=100 --watermark-pos=(250;250)

You can add a border for the watermark. You can specify border type, color, thickness and opacity after the --border, --border-color, --border-width and --border-opacity parameters.

ypdf add-watermark -i inputPath.pdf -o outputPath.pdf --border=dashed --border-color=blue --border-thickness=5 --border-opacity=0.7

If you do not know the exact dimensions of the watermark text, you can specify the exhaustive area of the watermark. But in this case, you need to place the watermark text in the lower left corner of this area.

ypdf add-watermark -i inputPath.pdf -o outputPath.pdf -w "My watermark" -a 60 --watermark-pos=(250;0) --watermark-width=10000 --watermark-height=10000 --watermark-text-alignment=left --watermark-text-h-alignment=left watermark-container-v-alignment=bottom

You can also add a watermark annotation to the PDF document. The watermark annotation configuration is almost the same as the watermark configuration. You can not specify text alignment, horizontal text alignment and watermark container vertical alignment. But you can specify x-translation and y-translation after the --watermark-x-translation and --watermark-y-translation parameters.

Unlike a watermark, the watermark annotation is placed in an enclosing rectangle that does not rotate with the text. If the text does not fit into this rectangle, it will be cut off. As with the watermark, by default there is an attempt to center the watermark annotation by shifting the position of the lower left corner. But since the enclosing rectangle does not rotate, the watermark annotation remains in the center when the text rotates. However, centering may be broken when a non-minimal enclosing rectangle is specified. But you can always specify the position of the lower-left corner manually using the --watermark-pos parameter.

Please note that it is important to specify the width, height, x-translation and y-translation of the watermark text in order to properly draw and align it.

ypdf add-watermark-annotation -i inputPath.pdf -o outputPath.pdf -w "My watermark" -s 72 --font-family=times_bold --font-color=black -a 60 --font-opacity=0.5 --watermark-width=300 --watermark-height=450 --watermark-x-translation=50 --watermark-y-translation=25

Remove watermark from PDF document

Removing watermark from the PDF document.

It is only possible to remove a watermark represented as a PDF document annotation format. It is not possible to remove a watermark from images in a PDF document and watermarks in other formats.

ypdf remove-watermark-annotation -i inputPath.pdf -o outputPath.pdf

You can specify the pages on which to remove the watermark using the -p parameter. If page numbers are not specified, the watermark will be removed from all pages of the PDF document. Here you can read about the format of the input parameters.

ypdf remove-watermark-annotation -i inputPath.pdf -o outputPath.pdf -p 1 -p 5-10

Convert images to PDF document

Converting the images to the PDF document.

ypdf image-to-pdf -f inputPath1.png -f inputPath2.jpg -o outputPath.pdf

You can specify PDF document pages size, auto increasing PDF document pages size, images margins, images horizontal alignment and images rotation angle after the --page-size, --image-autoincrease-size, -m, --image-h-alignment and -a parameters. You can also specify the PDF documnet pages size using the --page-width and --page-height parameters. Here you can read about the format of the input parameters.

Please note that automatic page resizing does not take into account image rotation.

ypdf image-to-pdf -f inputPath1.png -f inputPath2.jpg -o outputPath.pdf --page-size=a4 --image-autoincrease-size=false -m 10 --image-h-alignment=left

You can also specify the directory from which the files will be taken using the --files-from parameter and the pattern that these files should satisfy using the --file-pattern parameter.

ypdf image-to-pdf --files-from=pathToDir1 --files-from=pathToDir2 --file-pattern=*.jpg -o outputPath.pdf

Convert text to PDF document

Converting text to the PDF document.

ypdf text-to-pdf -i inputPath.txt -o outputPath.pdf

You can specify margins, text alignment and PDF document pages size after the -m, -A and --page-size parameters. You can also set the page size using the --page-width and --page-height parameters. Here you can read about the format of the input parameters.

ypdf text-to-pdf -i inputPath.txt -o outputPath.pdf -m 50,100,50,100 -A right --page-size=a4

You can also configure the font.

ypdf text-to-pdf -i inputPath.txt -o outputPath.pdf -s 24 --font-family=times_bold --font-color=blue --font-opacity=0.5

ypdf text-to-pdf -i inputPath.txt -o outputPath.pdf --font-path=D://Fonts//Roboto-light.ttf --font-encoding identity_h

Extract images from PDF document

Extracting images from the PDF document.

To perform this action, it is necessary that python 3 and some of its packages are installed.

You can specify the directory where the images will be extracted using the -O parameter and one or more PDF documents from which images will be extracted using the -f parameter.

ypdf extract-images -f inputPath.pdf -O outputDirectoryPath

Extract text from PDF document

Extracting text from the PDF document.

ypdf extract-text -i inputPath.pdf -o outputPath.txt

You can also extract the text using the tika. To perform this action, it is necessary that java 8, python 3 and some of its packages are installed.

ypdf extract-text-tika -i inputPath.pdf -o outputPath.txt

Set password to PDF document

Setting password to the PDF document.

You can specify PDF document password using the --password parameter. In this case, the same user password and the owner password will be set. You can also specify the user password and the owner password using the --user-password and --owner-password parameters.

ypdf set-password -i inputPath.pdf -o outputPath.pdf --password=samePassword

ypdf set-password -i inputPath.pdf -o outputPath.pdf --user-password=user --owner-password=admin

You can also specify the encryption algorithm using the --encryption-algorithm parameter.

ypdf set-password -i inputPath.pdf -o outputPath.pdf --user-password=user --owner-password=admin --encryption-algorithm=aes_128

Remove password from PDF document

Removing password from the PDF document.

You should specify the PDF document password using one of the following parameters: --password, --user-password, --owner-password.

ypdf remove-password -i inputPath.pdf -o outputPath.pdf --password=12345

Compress images

Compressing the images.

To perform this action, it is necessary that python 3 and some of its packages are installed.

You can specify any number of images by using the -f parameter.

If you specified only one image, the output image format is read from the output file path, which should be specified after the -o parameter. For a good compression ratio, it is recommended to specify the jpg format.

ypdf compress-images -f inputPath.png -o outputPath.jpg

You can specify image quality factor (from 0 to 1), image size factor (from 0 to 1), output image width and output image height after the --image-quality, --image-size-factor, --image-width and --image-height parameters.

For example, with this command you will compress the image with an quality factor of 0.75 and reduce its size by 30%.

ypdf compress-images -f inputPath.png -o outputPath.jpg -Q 0.75 --image-size-factor=0.7

For example, with this command you will compress the image with a compression ratio of 0.75 and make its size equal to 1920x1080.

ypdf compress-images -f inputPath.png -o outputPath.jpg -Q 0.75 --image-width=1920 --image-height=1080

If you have specified several images, you do not need to specify the output path, but you can specify the output directory path using the -O parameter.

ypdf compress-images -f inputPath1.jpg -f inputPath2.png -O outputDirectoryPath

You can also specify image quality factor (from 0 to 1), image size factor (from 0 to 1) and output images extension after the --image-quality, --image-size-factor and -E parameters.

JPEG is the default image format. Therefore, images with transparency can be distorted. To avoid this, use a different format (for example, PNG). However, other formats give a much lower compression ratio.

ypdf compress-images -f inputPath1.jpg -f inputPath2.png -O outputDirectoryPath -Q 0.75 --image-size-factor=0.7 -E jpg

You can also specify the directory from which the files will be taken using the --files-from parameter and the pattern that these files should satisfy using the --file-pattern parameter.

ypdf compress-images --files-from=pathToDir1 --files-from=pathToDir2 --file-pattern=*.png -O outputDirectoryPath