Here are some potential disadvantages of not including a LinkedIn profile link in your resume:
- Missed opportunities for connections. Hiring managers may want to view your full LinkedIn profile for more details on your background and connections. Not providing a link makes this more difficult.
- Lack of verification. A LinkedIn profile can provide validation of your resume details like job titles, companies, and education. Excluding it raises questions on accuracy.
- No sense of your personal brand. Without a LinkedIn link, recruiters don't get a feel for how you present yourself professionally online.
- Fewer touches for engagement. The link provides another way for recruiters to follow-up and connect with you if interested.
- Appearance of having something to hide. Some may wonder why you would not include your LinkedIn unless you are uncomfortable sharing it.
- Missed SEO value. Having LinkedIn in your resume helps boost your search visibility for recruiters.
Overall, declining to link your LinkedIn profile misses out on showcasing more about yourself in a professional digital space. Unless you have concerns about privacy, the benefits tend to outweigh any disadvantages for most job seekers.