SVG Chart to Data Extractor

SVG Chart to Data Extractor | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Data Processing
Input types: textarea, select, number
Output type: json
Sample coverage: 4
API ready: Yes

Overview

The SVG Chart to Data Extractor is a specialized utility designed to reverse-engineer data points directly from raw SVG code. By analyzing SVG elements like polylines, rectangles, and paths, it maps visual coordinates back to actual chart values using customizable axis ranges, making it easy to recover lost datasets from exported reports, web charts, or embedded graphics.

When to use

When you have an exported SVG chart but have lost access to the original dataset or spreadsheet.
When you need to scrape or extract precise data points from a web-based SVG visualization.
When migrating static SVG reports into dynamic charting libraries that require raw JSON data.

How it works

1Paste your raw SVG code containing the chart elements into the input field.
2Select the chart type (line, bar, pie, or scatter) or leave it on auto-detect to let the tool identify the structure.
3Define the minimum and maximum values for the X and Y axes to calibrate the coordinate mapping.
4The tool calculates the relative positions of the SVG shapes within the viewBox and outputs the recovered data points as structured JSON.

Use cases

Recovering historical sales data from an old SVG dashboard export where the original database is inaccessible.
Extracting coordinates from a scientific scatter plot published as an SVG on a research portal.
Converting static vector infographics into dynamic, interactive charts by extracting the underlying values.

Examples

1. Recovering Line Chart Data

Data Analyst

Background

A data analyst has an SVG file of a monthly revenue trend chart but needs the raw numbers to build a new report.

Problem

Extracting exact Y-axis values from a static SVG polyline.

How to use

Paste the SVG code, select 'Line / Polyline', and set the Y-axis min to 0 and max to 80 based on the chart's visual labels.

{
  "chartType": "line",
  "xAxisMin": 0,
  "xAxisMax": 12,
  "yAxisMin": 0,
  "yAxisMax": 80
}

Outcome

The tool maps the polyline points to the 0-80 scale and outputs a JSON array of the 12 monthly revenue figures.

2. Extracting Bar Chart Metrics

Web Developer

Background

A developer is migrating a static HTML page with embedded SVG bar charts into a modern application using a dynamic charting library.

Problem

Converting SVG <rect> elements into a JSON dataset for the new charting library.

How to use

Input the SVG containing the rectangles, choose 'Bar / Rectangles', and define the X and Y axis bounds.

FAQ

What types of SVG charts are supported?

The tool supports line charts (polylines), bar charts (rectangles), scatter plots (points/circles), and pie charts (arc paths).

How does the tool calculate the actual data values?

It uses the SVG's viewBox dimensions and the X/Y axis minimum and maximum values you provide to map pixel coordinates back to real-world data points.

Can it extract data from an image like PNG or JPEG?

No, this tool only works with vector-based SVG code containing distinct shape elements.

Do I need to provide the axis ranges?

While optional, providing the exact X and Y axis minimum and maximum values is highly recommended to ensure the extracted data matches the original scale.

What format is the extracted data in?

The tool outputs the recovered data points as a structured JSON object, which can be easily utilized in data visualization libraries or converted to CSV.

{
  "chartType": "bar",
  "yAxisMin": 0,
  "yAxisMax": 100
}

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Recovering Line Chart Data

2. Extracting Bar Chart Metrics

FAQ

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