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Open the PDF you want to optimize in Adobe Acrobat.
Go to the File menu and select Save As Other, then choose Reduced Size PDF.
In the Reduce File Size dialog, review the optimization settings for compression and object removal.
NoteLinearization allows users to begin viewing the first pages of a PDF before the entire file is downloaded.
In the same dialog, adjust compression settings for images and discard unnecessary objects or data as needed to further reduce file size.
Best practiceReducing image resolution and removing embedded fonts can significantly decrease file size for web delivery.
Click OK to apply the optimization settings.
Save the optimized PDF with a new file name to preserve your original document.
Enabling 'Optimize for Fast Web View' ensures your PDF loads quickly when accessed online.
This runs in the Acrobat app - there is no separate API for this task.
Reducing the file size in Acrobat does not change or degrade the text in your PDF. Only images are affected by the compression process. This means your words will always stay clear and sharp.
You should start with 'Low (High Quality)' compression because it often reduces the file size by 10-30% without re-compressing images. This means your pictures keep their quality while the file still gets smaller. It's a good balance for most uses.
If you compress a PDF that has already been compressed, the quality will get worse each time. This is because more image data is lost with every compression cycle. Always try to compress from your original, first file to keep the best quality.
'Reduced size PDF' specifically focuses on making the file smaller by optimizing images and removing unnecessary data. Other 'Save as' options might save the file in a different format or with different settings, but they don't always target file size reduction as their main goal. 'Reduced size PDF' is your best choice for a smaller file.