A line chart answers one question better than any other chart: which way is this number heading? This generator takes your points in time order — one label and value per line — and draws the trend with the value printed at every point, so the chart works even when it is printed or screenshotted without context. The vertical axis pads and rounds itself, so the line never hugs the top or bottom edge.
The smooth-curve toggle is a presentational choice, not a data change: the curve passes through every real point either way, it just connects them with a flowing line instead of straight segments. Turn the markers off for a cleaner look on dense data. Everything runs in your browser — your data is never uploaded — and the result is yours as a PNG download or an embed code.
How to use it
Type your data in time order — one label and value per line, separated by a comma, like January,1200. Or load the Website Visitors, Daily Sign-ups or Monthly Revenue example in one click.
Give it a title and pick the line colour — a preset, or any exact colour with the picker.
Style the line — smooth curve or straight lines, and point markers on or off.
Download or embed — save the chart as a PNG image, or copy the HTML embed code and paste it into any web page.
What you get
Trend stats included — first point, last point, the percentage change between them, and the peak.
Smooth or straight — one toggle switches between a flowing curve and straight segments.
Point markers & value labels — every point marked and numbered (labels relax on very dense data).
Your colour — four presets plus an exact colour picker for the line.
PNG + embed code — download the image, or embed the live chart in your own page.
Frequently asked questions
How do I make a line chart online for free?
Type one label and value per line, in time order — for example January,1200 — and the chart draws itself as you type. Add a title, pick a colour, then download the chart as a PNG or copy the embed code. There is no sign-up and your data never leaves your browser.
Does the smooth curve change my data?
No. The curve passes through every one of your real points in both modes — smoothing only changes how the points are connected visually. If your audience needs to read exact intermediate values, straight lines are the plainer choice.
How many points can the line chart handle?
As many rows as you paste. Once there are more than about 24 points, the per-point value labels switch off automatically so the chart stays readable, and long labels rotate instead of colliding.