Line Chart Generator

Create line and area charts from CSV, JSON, XML or Excel. Pick columns by checkbox, adjust scale and labels, export as SVG, PNG or JPEG.

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Line Chart Generator

A line chart shows how values change across an ordered sequence. Use this generator for measurements, monthly figures or project progress without opening a spreadsheet application. Paste your table as text or load a file from your device. Choose the X-axis column, select the data series and create the chart with a button. You can then save the graphic for a report, presentation or your own records.

How it works

Start with a table containing one column for the sequence and additional columns for numeric values. The generator automatically detects commas, semicolons or tabs as delimiters. If the parsed columns do not match your table, select the delimiter manually. Use the header option to specify whether the first row contains column names. After the first parse, assign a column to the X-axis and select the Y-series using checkboxes.

For a temperature chart, the first column could contain weekdays and the second column the measurements. Another numeric column could hold readings from a different location. The lines let you compare those patterns without switching between tables. Add a title and axis labels, including units. You can limit the row range, hide the grid or turn off the legend. Click “Create chart” again to apply changes. Editing a setting alone does not redraw the chart.

What the tool can and cannot do

Compare multiple series, mark individual data points with dots or fill the area beneath each line. The area fill highlights the shape of the series; it does not calculate a total. The generator displays up to eight series at once. A linear Y-axis shows equal numeric differences with equal spacing. A logarithmic scale can help compare positive values across different orders of magnitude. Zero and negative values do not belong on a logarithmic scale.

The X-axis places text labels at equal intervals. If every entry in the chosen X column is numeric, the chart uses the numeric distances instead. Dates supplied as text therefore do not automatically produce proportional time intervals. Sort your source table into the intended order before loading it. Missing Y-values leave gaps rather than drawing a false measurement at zero. The chart does not replace statistical analysis, and a line connecting measurements does not predict future results.

Why local browser processing

Your browser reads the table and draws the chart on your device. The generator sends neither the pasted measurements nor the selected file to a server. You do not need an account. This is useful for internal project figures or measurements you have not published yet. Before sharing a chart, check its title, legend and labels: the exported graphic contains those details. Once the necessary resources have loaded, you can continue working without an internet connection.

Frequently asked questions

Are my data uploaded?

No, the generator processes your data locally in your browser. It does not send tables to a server. Chart creation also works offline after the required resources have loaded.

Which input formats can I use?

Paste CSV, TSV, JSON or XML as text, or load them from a file. Use the file picker for Excel XLSX workbooks. The tool reads the first worksheet in a workbook.

Which output formats can I save?

Download SVG, PNG or JPEG. SVG stays sharp when you enlarge it. PNG offers standard and double resolution. You can also copy the SVG source code for use elsewhere.

Can I fill the area and hide point markers?

Yes. Enable the fill beneath the lines or disable the dot markers. These settings work independently. Create the chart again after changing them to update the preview and exports.

When should I choose a logarithmic Y-axis?

Use it to compare positive values spanning different orders of magnitude. Choose the linear scale for data that includes zero or negative measurements.

Does Excel support need an internet connection?

The browser loads Excel support when you first open an XLSX file. Load it before going offline. For CSV, TSV, JSON and XML, the already loaded page is enough.