Automated Visualization Makeovers with LLMs

• URL: http://arxiv.org/abs/2508.05637v1
• Date: Mon, 21 Jul 2025 11:51:20 GMT
• Title: Automated Visualization Makeovers with LLMs
• Authors: Siddharth Gangwar, David A. Selby, Sebastian J. Vollmer,
• Abstract summary: Visualisation makeovers are exercises where the community exchange feedback to improve charts and data visualizations.<n>Can multi-modal large language models (LLMs) emulate this task?<n>Our system is centred around prompt engineering of a pre-trained model, relying on a combination of user guidelines and any latent knowledge of data visualization practices.
• Score: 0.716879432974126
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Making a good graphic that accurately and efficiently conveys the desired message to the audience is both an art and a science, typically not taught in the data science curriculum. Visualisation makeovers are exercises where the community exchange feedback to improve charts and data visualizations. Can multi-modal large language models (LLMs) emulate this task? Given a plot in the form of an image file, or the code used to generate it, an LLM, primed with a list of visualization best practices, is employed to semi-automatically generate constructive criticism to produce a better plot. Our system is centred around prompt engineering of a pre-trained model, relying on a combination of userspecified guidelines and any latent knowledge of data visualization practices that might lie within an LLMs training corpus. Unlike other works, the focus is not on generating valid visualization scripts from raw data or prompts, but on educating the user how to improve their existing data visualizations according to an interpretation of best practices. A quantitative evaluation is performed to measure the sensitivity of the LLM agent to various plotting issues across different chart types. We make the tool available as a simple self-hosted applet with an accessible Web interface.

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