Yes, you can use filters or edits on your profile picture as long as they enhance the picture and appropriately represent your personality. However, be careful not to overdo it or make the image look unnatural.
The best platform for your profile picture depends on your goals and context. If you want to make professional contacts, LinkedIn and Xing are suitable platforms. Facebook and Instagram are popular for communicating with friends and family. Choose the platform(s) that best suit your needs.
Enlarging your profile picture online can have a significant impact on your online presence and the way other people perceive you. By choosing the right image formats, using high-resolution images, using image editing tools, and presenting your profile picture in the best possible way on different platforms, you can ensure that it has the desired effect. Remember to regularly check and update your profile picture to keep your presentation and personality fresh.