ChartBeauty / Line graph maker
Line graph maker
Show how something changed. Add a second series to compare two lines, and the latest value is called out automatically.
Quick answer: Enter time points and values. Fill the second value column to make a double line graph that compares two series. Upload a CSV if your data is in a spreadsheet, then export a PNG or SVG.
Alt text for accessibility
Line chart titled “Follower growth this year”. Jan 4.2K, Feb 4.7K, Mar 5.3K, Apr 5.9K, May 7.4K, Jun 9.1K, Jul 10.8K.
Start from a template
How to make it
- Enter your time points in order (days, weeks, months) with a value each.
- Optional: fill the “Series B” column to compare two lines, and name both series.
- Turn on short numbers for large values so the axis reads 12K instead of 12,000.
- Pick a landscape format for LinkedIn or X, or 4:5 for Instagram, then export.
When it works, and when it doesn’t
Use it for
- Trends over time: follower growth, revenue, weekly views.
- Comparing two trends on the same scale.
- Showing a turning point, such as the week a video went viral.
Pick something else for
- Categories with no natural order: use a bar graph.
- More than two or three lines on a phone-sized image.
- Very few points (two or three): a VS comparison or stat card says it faster.
Same data, different story
The shape of the image changes how steep a line looks. William Cleveland showed people compare slopes most accurately when the average segment sits near 45°.
Avg. slope 30°
Close to Cleveland’s “banking to 45°”: slopes are easy to compare honestly. A 4:5 Instagram post (0.8 : 1) steepens lines; a LinkedIn image (1.9 : 1) flattens them.
Design tips
The axis may start above zero
Unlike bars, a line encodes change by position and slope, so a non-zero baseline is acceptable. ChartBeauty pads the range slightly so the line does not hug the edges.
Watch the aspect ratio
The same data looks dramatic in a tall image and flat in a wide one. The explainer below shows why and what a fair shape looks like.
Call out the end value
The number people care about is usually the latest one. It is labelled in a tag at the end of each line.
Questions
How do I add a second line?
Fill in the “Series B” column. As soon as any row has a second value, the chart draws two lines with a legend. Name them in the series fields under Words.
Does a line graph need to start at zero?
No. Bar charts must start at zero because bar length is the value. Line graphs show change, so a tighter range is fine, but say so in the subtitle if the change is small.
What is the difference between a line graph and an area chart?
An area chart is a line graph with the space under the line filled. It emphasises volume or cumulative totals; a plain line is better for comparing two series precisely.
How do I make a double line graph?
Enter both series in the same rows: the first value column is series A and the second is series B. Name the two lines under Words. Two lines on the same scale are the clearest way to compare trends on a phone-sized image.
Can I upload a CSV file?
Yes. Click “Upload CSV” and choose a file with a label column followed by one or two number columns. A header row is skipped automatically if its first cell is “label”; otherwise delete it after loading.
How many data points can I add?
Up to 12 rows, which covers a year of months. More points than that are hard to read on a phone-sized image anyway.
Can I use it for stock or crypto charts?
For a simple price-over-time line in a post, yes. For candlesticks or live prices, use a dedicated financial charting tool.