How do I reduce the size of a PDF without losing quality?

To reduce PDF size while keeping good quality, start with the 'Low (High Quality)' compression setting in Acrobat. This option often reduces the file size by 10-30% because it skips re-compressing images. Text quality is never affected by compression, only images. Always work from your original file.

What is the difference between image quality for screen viewing versus printing?

Image quality for screens and print is different. For viewing on a screen or sending by email, images with 72-100 DPI are usually fine and look clear. However, for good quality printing, images need to be much higher, around 300 DPI. Using low DPI images for printing will make them look blurry or pixelated. Always match your compression settings to how the PDF will be used.

Why does compressing a PDF multiple times make the file worse?

Compressing a PDF multiple times makes it worse because each time you compress, more image data is removed or changed. This is like making a copy of a copy; each new copy loses more detail. To keep the best quality, always compress the original PDF document, not a file that has already been compressed before.

If my PDF has mostly text, will reducing its size affect the text quality?

No, if your PDF has mostly text, reducing its size will not affect the text quality. Compression in Acrobat only changes images, not text. Your text will always remain clear and sharp, no matter how much you reduce the file size.

Can I automate the process of reducing PDF file size for many documents?

Yes, you can automate reducing PDF file size for many documents using the Adobe PDF Services API. This API allows you to programmatically compress PDFs with different levels: LOW, MEDIUM, or HIGH. You can integrate this into your own systems to handle large batches of files efficiently.

◆ Acrobat · compress

Reduce size as part of a Power Automate or Zapier workflow

Every [event=audit] forces me to manually compress and reconcile archives. I want a repeatable delivery method that pr…

3ready prompts

1real task

3roles

See the prompt↓More compress workflows

AI prompts

3 ways to ask · copy any one

AExecute — “help me do it”Help me set up a [Power Automate/Zapier] flow to shrink PDF files...…+

Help me set up a [Power Automate/Zapier] flow so my PDF files from [source app] are automatically reduced in size using Adobe Acrobat before they go to [destination app].

when the reply comes backWant to add password protection to your PDFs in the same flow?

BImprove — “do it better”Suggest ways to make my PDF shrinking workflow more efficient...…+

Suggest ways to make my [Power Automate/Zapier] workflow for shrinking PDF files with Adobe Acrobat more efficient or reliable.

when the reply comes backNeed help sending the compressed PDF to Teams or email automatically?

CDecide — “help me choose”Should I use Power Automate or Zapier to reduce PDF size...…+

Should I use Power Automate or Zapier to automatically reduce PDF file size with Adobe Acrobat for [my situation]? Explain which is better and why.

when the reply comes backCurious how to track which files were reduced and when?

How to do it

the tool · the steps · what to avoid

1
Open your PDF file in Adobe Acrobat.
2
Go to the File menu and select Save As Other.
3
Choose Reduced Size PDF from the submenu.
4
Select the desired compatibility option in the dialog that appears.
CautionChoosing a lower compatibility may prevent older PDF viewers from opening the file.
5
Click OK to proceed.
6
Enter a new file name and location if prompted, then click Save.
Best practiceFor best results, always save the reduced file as a new copy to preserve your original PDF.

In the appWith the API

You can quickly reduce the file size of your PDF using the 'Save as Other' option in the File menu.

This runs in the Acrobat app - there is no separate API for this task.

Glossary

words on this page

Power AutomateA Microsoft tool to connect apps and automate tasks.ExamplePower Automate can automatically save email attachments to your cloud storage and notify you.

ZapierA service that links different apps to work together automatically.ExampleZapier can automatically add new email subscribers from your website to a spreadsheet.

Compress PDFMake a PDF file smaller so it takes up less space.ExampleI need to compress this PDF to reduce its file size before uploading it online.

The real tasks

the one, listed here

Avoid ad-hoc compression work every audit

FAQ

about this task

You connect Adobe Acrobat to Power Automate by using the Acrobat connector in your flow. This lets you add a step to reduce PDF file size automatically when a file is uploaded or received from another app.

Automating PDF compression saves time and ensures all your files are small enough for sharing or storage, without needing to shrink them by hand each time.

Yes, you can set up your workflow to take files from cloud apps like OneDrive or Dropbox, shrink them with Acrobat, and then send them to another app or folder automatically.

Both tools can shrink PDFs with Acrobat, but Power Automate works best with Microsoft apps, while Zapier connects to a wider range of services. Your choice depends on what other apps you use.

Yes, the automation will still process the file. If the PDF is already small, Acrobat may not shrink it much more, but the workflow will continue as normal.

Reduce size as part of a Power Automate or Zapier workflow

When to use it

AI prompts

How to do it

Glossary

The real tasks

Who does this

FAQ

Sources

Adobe help