Line Chart Generator

How to use

1. 1Paste your data into the input panel, one row per line, in the form label, value. Add more columns to draw multiple series on the same chart.
2. 2Use the first row as a header to name each series. To set a color, append [#hex] to a series name in the header, for example Revenue [#3b82f6].
3. 3Click any series chip to hide or show that line. Hidden series drop from the axis range and the legend.
4. 4Pick a line style (Linear, Smooth, Step), a color mode, and tweak width, height, line thickness, marker size, and font size with the sliders.
5. 5Toggle grid lines, point markers, value labels, area fill, the legend, and the transparent background. Then copy the SVG or download SVG or PNG.

About this tool

Line Chart Generator turns a short list of label and value rows into a clean, exportable line chart. The input takes one row per line in the form "x label, y value", with optional extra columns for multiple series so a single chart can compare revenue against costs, page views across countries, daily completions across teams, or any other side by side time series. An optional header row names each series and can carry a per-series color override using the [#hex] syntax ("Revenue [#3b82f6], Costs [#f97316]"). Pick linear, smooth (Catmull-Rom cubic with no overshoot), or step interpolation. Toggle gridlines, point markers, on-line value labels, a translucent area fill, the bottom legend, and a transparent background. Adjust width, height, line thickness, marker size, and font size with sliders. The Y axis is computed with the Heckbert nice-number algorithm so ticks land on round values, the chart anchors to a 0 baseline when the data is positive only, and X labels collapse to every Nth point when the count is high so axis text never overlaps. Click a series chip below the input to hide or show that series; hidden series drop out of the axis range and the legend without editing the data. The live preview, the copyable SVG markup, and the rasterized PNG download are all driven from a single SVG string built in your browser, so the preview is always exactly what you copy or save. Useful for slides, reports, dashboards, READMEs that need an embedded chart image, blog posts, classroom handouts, marketing one-pagers, social posts, and any quick visualization where opening a spreadsheet feels heavy. All parsing, layout, rendering, and export run locally; no data is uploaded.

Free to use. Works in your browser. No signup, no login.