This project was part of a digital product design formation focused on user experience strategy, research, and feature innovation. The challenge was to rethink the existing Leboncoin website, identifying usability issues and proposing a new feature that could improve user engagement and platform visibility. Our team aimed to combine research-based insights with modern interface design principles, resulting in a clear, cohesive, and engaging digital experience.
timeline
TEAM
Leboncoin is one of France’s most visited platforms for buying, selling, and exchanging goods and services.
However, its long-standing interface had become visually inconsistent and functionally outdated, leading to user frustration and decreased engagement.
The goal was to modernise the interface, simplify navigation, and introduce a new feature that would bring freshness and added value to the overall user experience. We also defined a clear project timeline to better coordinate across teams and structure each step, ensuring smoother collaboration and efficient delivery.
We started by studying the role of Leboncoin in users’ daily lives, analysing its target audience and positioning.
To better understand user needs, we conducted field interviews in the streets of Paris, observing and questioning people about their habits and motivations when using the platform.
We also performed a UX audit of the current website, identifying structural and visual pain points:
Overuse of buttons, colours, and icons without harmony
Cluttered navigation bar, reducing clarity
Poor colour contrast and limited white space
Visual noise that discouraged users from exploring further
This step allowed us to clearly define which elements of the user experience required improvement.
Following the audit and user research, we defined our problem statement:
“How can we refresh the Leboncoin experience to make it more intuitive, visually coherent, and attractive to a wider audience?”
Our goals were:
Improve navigation clarity and site hierarchy
Modernise the interface with a simplified visual system
Create a new feature to increase engagement and encourage repeated use
Ensure that the redesign remains consistent with Leboncoin’s trusted brand identity
We explored several directions for potential new features, guided by user expectations and market trends.
After multiple brainstorming sessions, we decided to integrate an Online Auction feature — a concept aligned with the platform’s DNA and the rising trend of interactive selling formats.
We then produced low-fidelity wireframes and sketches to test new page structures and interactions.
The focus was on maintaining simplicity while improving hierarchy and legibility.
We redesigned the visual language of the website to make it feel more modern, friendly, and consistent:
Reduced colour palette for a harmonious look
Simplified icons and typography for better readability
Added modern illustrations to convey personality and approachability
Special attention was given to the navigation bar and footer, ensuring they were intuitive, responsive, and aligned with the new design system.
The redesign was carried out collaboratively with a team of two full-stack developers.
My role focused on:
Building and styling the footer and navigation bar in HTML and CSS
Ensuring visual consistency and responsiveness across devices
Communicating closely with the developers to align the design with technical requirements
This phase highlighted the importance of cross-disciplinary dialogue and iteration between design and development.
The final solution presented:
A modernised interface with improved readability and structure
The Online Auction feature to attract new users and increase engagement
A refreshed visual identity that feels both professional and accessible
Enhanced harmony between design, usability, and brand personality
This project was a strong exercise in UX research, interface design, and collaborative teamwork.
It taught me how to:
Balance aesthetic updates with functional improvement
Translate user feedback into actionable design decisions
Communicate effectively between design and technical teams
Maintain brand authenticity while introducing innovation
Most importantly, it reinforced how human-centered design and team collaboration lead to meaningful, sustainable product improvements.
