ဤထိန်းချုပ်မှုကို ပြင်ဆင်ခြင်းဖြင့် ဤစာမျက်နှာကို အလိုအလျောက် အပ်ဒိတ်လုပ်ပေးပါမည်
![](https://help.apple.com/assets/5E31B4CA680CE2D1513448C6/5E31B4DD680CE2D1513448CE/en_US/c42f1daa28adecbfab6762cbd4f87c10.png)
Add effects to a PDF in Preview on Mac
You can modify a PDF opened in Preview using Quartz filters that add effects or change colors. For example, you can convert a color document to black and white, or apply a sepia tone.
In the Preview app
on your Mac, open a PDF you want to change.
Choose File > Export, click the Quartz Filter pop-up menu, then choose a filter.