PR (public relations) agencies help businesses and organizations to build and maintain a positive public image, by managing and shaping the public perception of their brand. PR agencies typically offer a range of services, including:

1. Media relations: PR agencies help businesses to build relationships with journalists and other media outlets, in order to secure media coverage and increase brand visibility.

2. Crisis management: PR agencies help businesses to manage and respond to crises or negative events, in order to minimize the damage to their reputation and image.

3. Content creation: PR agencies create and distribute content, such as press releases, articles, and social media posts, in order to promote their clients and their brand messages.

4. Event planning and management: PR agencies help businesses to plan and execute events, such as product launches, press conferences, and charity events, in order to build relationships with their stakeholders and increase brand visibility.

5. Influencer outreach: PR agencies help businesses to build relationships with influencers, in order to promote their brand and reach new audiences.

6. Brand reputation management: PR agencies help businesses to monitor and manage their online reputation, in order to address any negative or incorrect information about their brand and maintain a positive image.

7. Research and analysis: PR agencies conduct research and analysis, in order to understand their clients' audiences, the media landscape, and the competitive environment, and to inform their PR strategies.

In summary, PR agencies play a crucial role in helping businesses and organizations to build and maintain a positive public image, by managing their relationships with the media, their stakeholders, and the public.