When a startup already has a degree of recognition, evolving its identity is a delicate exercise. The challenge is to modernise the existing codes without distorting the brand, while strengthening its ability to convey its expertise instantly. At the same time, the corporate website has to become a genuine performance tool, capable of helping visitors understand energy-renovation issues and encouraging them to get in touch.

To meet this objective, the branding agency Bonhomme rethinks, from its Paris offices, Cozynergy's brand platform, logotype and visual identity starting from its historic symbol, the coloured circle. This pictogram is transformed into an energy circle inspired by building energy-performance labels. The colours progressively shift from the darkest tones to a vivid blue to embody the shift from poor energy performance to a more virtuous situation. The arrow integrated into the circle reinforces this idea of continuous improvement and gives the brand symbol real meaning. This work is complemented by the creation of a graphic world made up of illustrations, pictograms and visual elements that let the identity better express the closeness, expertise and support offered by Cozynergy.

In Paris, the web agency Bonhomme develops, in parallel, a corporate website whose UX/UI approach is built on instruction and performance. The illustrations become a central element of the interface, helping make the content more accessible and more engaging.

The user journey is structured around an energy-diagnosis tool that lets visitors assess their situation and identify solutions suited to their home. This UX/UI approach turns the site into a genuine acquisition lever, capable of generating qualified leads while showcasing the startup's premium expertise.

The device makes it possible to:

- develop a stronger, more meaningful visual identity;
- design a logotype capable of instantly conveying the brand's expertise;
- strengthen understanding of the offer through a coherent graphic system;
- create a more legible, higher-performing corporate website;
- develop a UX/UI experience designed for conversion;
- generate qualified leads through a differentiating digital tool.

By bringing together branding agency expertise, visual identity, logotype, web agency, UX/UI and corporate website design, Bonhomme demonstrates its ability to support startups in transforming their image and premium digital performance. The project illustrates how branding can become a genuine lever for understanding, differentiation and acquisition when placed at the heart of the user experience.

The Bonhomme team was attentive, creative and responsive throughout the project, with real care for the small details that matter. The result? A visual identity in step with our times and an effective site we're very proud of!