No, it won't do any harm deleting them, it might even speed things up a bit if there are old redundant cookies in there. Just be aware if you let the computer automatically sign you into sites you might lose that facility until you re-sign in again.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
How Nearly Normal created super-fun papercraft for Google
47 iPhone camera tips to help you take better photos
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.