If you tried to create pdf file in Mac, you will notice the pdf file size is huge. Many people are looking for ways to reduce the pdf file size, some even choose to purchase third party software to create pdf file in Mac. Here’s a way to reduce the pdf file size for free using the Mac default viewer – Preview.
I’ve run a test which convert a doc file to pdf file in Mac (doc file size 850k), and it produce a pdf file which is 1.2MB. After i reduce the pdf file size using Preview, the pdf file size reduced to 485k. Amazing right!
To reduce the pdf file size in Mac, follow the steps below:-
- Open your pdf file using Preview
- Click on File -> Save As, Choose “Reduce File Size” from “Quartz Filter” and click Save button

- Done. your PDF file size should be reduce by now.



hmmm from what i know you need to do this manually.
May i know what application u use to create the pdf?
you might want to check the application that generate invoice pdf, and it might be able to be change some settings to generate lighter pdf file
Is there any way that you can set it as a default setting? I keep sending out invoices in PDF formats and clients find it easier when its a smaller size. Any way in doing so?
I will join the chorus, most happily! This is a VERRY helpful tip. Thank you SOSOOSO much!
I just tried this with a pdf-file of 3.5 MB and it work as it should. Now it is 717 kB with quality the same as far as I can see.
Thanks a lot!
This tip worked great! I had a 332 K Word document with pictures and graphics that the regular way I used (with print) converted to a 3.5 MB pdf. I used this tip and it is only 132 K pdf! It looks and prints exactly the same! Thanks so much!!
Brilliant tip!!! didn’t know it was so simple!!! thanks again
Thanks so much, I have been trying different ways all weekend, so simple!!!!
Fantastic!!!! My file went from 1.6M to 206k !!!!!
the smaller file has the exact same quality as the larger file
when i open it on my mac. I have not yet tried to print it though….
Thank you so much. You just saved me so much time and grief.
Brilliant! I have been trying to do this for months! Thank you for one of the most useful tips around. It works perfectly and my file is still showing in good quality…7 pages with text and 18 photos. Again…Brilliant!
hahahah it’s so simple! Thanks so much! I also used your how to save as .pdf from .doc and it’s just so simple I can’t believe I didn’t see it myself. Thanks again!
for me is all the same with the pictures looks as it was great tip thanks!
hmmm i tried with pdf file that contain pictures and text.
after the resize everything still looks the same …
nvm i’ll try to check what’s went wrong for u
Or I could of just listened to my friends and stuck to a PC instead switching to the Mac
Thanks mate this has been causing me great grief!
Yer, it reduces the file size by 80%, but the quality is so shit you can’t read anything.