Flatten', which is the option you want. How to Flatten on Mac in Windows 10 This is what I did to flatten a PDF on my Mac computer. How to Flatten PDF on Windows 10 Easily 1. Open PDF in Notepad 2. Make A Delete Paste 3. In notepad, paste that text below. I did it by copy-pasting it, because I am lazy. After doing this, a new folder will pop up, and the PDF will be flattened. How to Quickly Flatten a PDF in Microsoft Edge (Or In Internet Explorer) In Microsoft Edge, if you click on the PDF and hold, you can then click the little paper icon on the bottom right. There are other ways to flatten PDF, but I personally prefer the paper icon in Edge. You can also check this blog post to figure out how to flatten a PDF in Microsoft Edge In Internet Explorer on Microsoft Edge Step 4. Flatten PDF on Windows 10 1. Open PDF in Microsoft Edge OR In Internet Explorer 2. Click on 'File > 'Save as PDF 3. A new folder will pop up, and this will show up in the 'Flattered' folder 4. Copy-paste the text that you copied earlier. That's it! 5. Flattening a PDF in Microsoft Edge or Internet Explorer On Windows 10, the process of converting it to a flatter one is somewhat easier than on other Operating Systems. You can do it either by Right-Click on the PDF you want to flatten and Save, or by dragging down the PDF, Select 'flatten' and save it. Can you flatten PDF in Microsoft Edge or Internet Explorer? Yes. You can. What do I need to Flatten a PDF on an Android Device? On Android 4.4 KitKat or higher, we can flatten PDF on an Android device.