About Plot2Data

What is Plot2Data?

Plot2Data is a free online tool that uses artificial intelligence to extract numerical data from graph images. Whether you have a screenshot from a research paper, a graph from a business presentation, or a graph embedded in a PDF report, Plot2Data can analyze the image and return structured, downloadable data in CSV format within seconds.

Unlike traditional plot digitizer tools that require you to manually click on each data point, Plot2Data leverages Google Gemini's multimodal AI to understand the entire graph at once — recognizing axes, labels, scales, data series, and individual values automatically.

The Problem We Solve

Every day, millions of graphs and graphs are published in scientific papers, financial reports, news articles, and business presentations. The data behind these visualizations is often unavailable in raw form. Researchers reviewing published studies frequently need the underlying data to perform meta-analyses, verify results, or compare findings across papers. Financial analysts encounter graphs in earnings reports where the raw numbers are not provided. Students need to extract data from textbook figures for assignments and projects.

Traditionally, extracting data from graph images has been a tedious manual process. You either estimate values by reading the axes carefully, use ruler-based tools to measure pixel positions, or employ semi-automated digitizer software that still requires clicking on every data point individually. These methods are slow, error-prone, and impractical for graphs with many data points or multiple series.

Plot2Data eliminates this friction. Upload an image, and our AI handles the rest — identifying the graph type, reading the axes, and extracting every data point in a matter of seconds.

How It Works

Plot2Data uses a straightforward three-step process designed for speed and simplicity:

1. Upload your graph image. Drag and drop, paste from clipboard (Ctrl+V), or use the file picker. We support PNG, JPG, SVG, and WebP formats. The image is sent securely over HTTPS for analysis.
2. AI analyzes the graph. Our system sends the image to Google Gemini's multimodal AI model, which identifies the graph type, reads axis labels and scales, locates data points and series, and extracts numerical values. You can optionally configure settings like expected data point counts, error bar extraction, structural mechanics analysis (for stress-strain curves), and logarithmic scale detection.
3. Download your data. The extracted data appears in a structured table organized by series. You can copy individual series to your clipboard or download the entire dataset as a CSV file for use in Excel, Python, R, MATLAB, or any data analysis tool.

For a detailed walkthrough, visit our How It Works page.

Supported Graph Types

Plot2Data supports 16 different graph types, including line graphs (single and multi-series), bar graphs (vertical, horizontal, stacked, grouped), scatter plots (with and without trend lines), pie and donut graphs, area graphs, box plots, histograms, candlestick graphs, and heatmaps. Each graph type has been tested with diverse real-world examples to ensure reliable extraction accuracy.

Who Uses Plot2Data?

• Researchers and scientists who need to extract data from published papers for meta-analyses, literature reviews, or reproducing results from studies that do not provide raw data files.
• Data analysts and business professionals who encounter graphs in reports, presentations, and dashboards where the underlying data is not accessible or not exported in a usable format.
• Students and educators working with textbook figures, lecture slides, and academic publications where data extraction is required for coursework, research projects, or teaching materials.
• Journalists and fact-checkers who need to verify data presented in graphs or convert visual data into a format suitable for independent analysis and reporting.
• Engineers analyzing stress-strain curves, performance graphs, and test results from technical documents and material datasheets.

Our Technology

Plot2Data is built with modern web technologies to ensure fast, reliable performance. The application uses Next.js for server-side rendering and optimal loading speeds, and is deployed on Vercel's global edge network for low-latency access worldwide. Graph analysis is powered by Google Gemini AI, one of the most capable multimodal AI models available, which understands both the visual structure and textual content of graph images simultaneously.

We prioritize your privacy: uploaded images are processed in real-time and are not stored permanently on our servers. The analysis happens through a secure API call, and results are returned directly to your browser. No account creation is required, and no personal information is collected.

Our Mission

We believe that data locked inside graph images should be accessible to everyone. Whether you are a graduate student on a limited budget, an independent researcher without institutional tools, or a professional who needs quick data extraction without complex software, Plot2Data is here to help — free of charge.

Our goal is to make graph data extraction as simple as taking a screenshot. As AI technology continues to improve, we are committed to expanding our accuracy, supporting more graph types, and making the tool even more useful for the global community of data-driven professionals.

Get in Touch

Have questions, feedback, or feature requests? Join our Discord community or visit our contact page.