Saturday, April 7, 2018

Learn easy tips How to change Compression Type in PDF

Learning tips to change Compression Type in PDF

This post is about the change PDF compression type, SKOTechlearn will explain some tips about it, how to change compression type in without effecting any DPI changes. But, first, we have to know the types of Compression in document.
There is following list of PDF's compression types:
CCITT G3/G4
JPEG
JPEG2000
JBIG2
ZIP

 Step 1: Find page information:
Open "Print Production" option from "Tools" menu of Acrobat and click on it. "Print Production" contains more options like: Acrobat Distiller, Output Preview, Preflight, Trap Presets etc. 

Click on "Preflight" option. A "Preflight" window will open. Go to "Profiles" and click on search icon button and find "Page Description" option and click on it. After that, find 'Page Objects' option from "Page Description". This option will explain all page related information.

Change Compression of document without loosing Quality

Steps: Open File In Acrobat >> Tools >> Print Production >> Preflight >> Click on Single Check Button >> Page Description >> Page Objects >> Results Tab >> Page Objects >> Expand "Page 1" >> Expand “Compression/encoding”

Note: CCITT will be apply on black and white image. You can not apply in color image.

Suppose, we have files and Its compression described as:-

Files: PAGE A, PAGE B, PAGE C , PAGE D.
Compression Type : "ZIP/ Flate compression (FlateDecode)"

 Step 2: PDF Optimizer process:
First, create new action for multiple file process. For it go to Action creation for change property. In create new action window, go to "Output Options" window. Find "PDF Optimizer" and check it and click on "Settings..." button as shown bellow.
Output Option for change compression type
Output Option Setting
When pressing on "Settings..." button, a window "PDF Optimizer" will open. In this window modify only image settings. There is no need to change any other settings. The "Image Settings" Tab contain 3 types of settings.
Color Images
Grayscale Images
Monochrome Images
Apply changes in given 3 settings.

Note: there is a "Optimize images only if there is reduction in size." check box. Remove check on it. Because if there is check on it, this will not apply on that files which are already compressed.

After that press "OK" button. This process will present input box for save settings. In this input box, type your setting name and save it like "Compression_Type".
Settings for change compression type
Compression type Setting

 Step 3: Path selection and Save Action Process:
After Optimization setting, select file path and save action. you can input you action name cording to yourself, we will save as "Change_Compression_Type".

Compression of document with loosing Quality

save action for change compression type
Path selection and save action
 Step 4: Find and Execute Action:
Now, its time to execute created action,  find it on "Edit Action" window. When you find action name, select it then click on "Run" Button, a window will appear. click on "Next" button for execution of action.

This will present action execution process, it will show the step by step execution of files. When action perform process bar will complete its execution, then it will show a message box. Press "Close" button.
Execute Action for change compression type
Execute Action
The action execution process has been completed successfully.
 Step 4: Check File's Output:
Now, come to output location and check if files are in that compression types or not. For checking compression of files, the following image will present the difference of source and output files compression type.

Easily check or find the Resolution of PDF Document easy tech tips
Output of change compression type
Output Difference
There is description of  both files differences, before and after execution. As mention before execution of action file contain "ZIP/ Flate" compression type. And after execution of action,  the compression type has been changed with in "JPEG".

Now, you have to learn the steps to change compression type of any PDF with SKOTechLearn.

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