For knowing the internal and external links of a website at one glance you may take the help of the various internal/external link checker tools. By using this tool you can minimize the time and effort as all internal and external links are displayed by using this tool. All you need to do is to enter your website URL or download this tool which will allow you to see all the internal external links of the particular website.
Here is the list of top 6 Internal/External link checker which you might be using:

1. Seo Chat

2. Link Vendor

3. Dead Links

4. SEO Quake

5. IBMC

6. Quirk