The four-strong digital firm will become part of the Eulogy group, but retain its own brand identity.
Agency CEO Adrian Brady admitted Eulogy needed to improve its digital offering. He added: 'A lot of PR agencies are claiming to be able to offer creative online PR services, but what they really offer is a few digital services such as podcasts and basic search engine optimisation.'
Joint MD's Graham Lee and James Fitzgerald founded Onlinefire PR last year.