Online Line Chart Maker

Create clean, professional line charts for free — just enter data in your browser and download.

How to Use
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Create clear line charts in your browser

Create line charts in real time just by entering numbers with this free online tool. Easily visualize time-series data like sales trends or traffic changes. It supports smooth curves and area charts, and you can instantly download the finished chart as a high-quality PNG image. No registration or installation is required.

Line chart sample
How to Create a Line Chart
STEP1

1. Enter Data for the Chart

Enter the labels (e.g., year/month) and numerical values you want to chart into the table on the screen. The entered data is reflected in the preview in real-time, so you can check the result as you work. Adding or deleting rows and columns takes just a single click.

Example of data entry screen
STEP2

2. Customize the Appearance (Optional)

You can finely adjust the chart's design to your liking. Change the color scheme all at once from the "Color Theme", adjust line thickness, display data points, or fill the area under the graph (turning it into an area chart) to achieve your desired style.

Example of graph customization screen
STEP3

3. Download & Share as an Image

Once the chart is complete, click the "Save Image" button to download it in high-quality PNG format. If you are using a smartphone, you can also send it directly to social media or email via the "Share" button.

Example of image save and share screen
Key Features

Visualize Trends Instantly

Simply enter your labels (like dates or months) and numerical data to instantly generate a line chart that clearly illustrates upward or downward trends.

Flexible Design Customization

Tailor the chart's appearance by adjusting line thickness, highlighting specific data points, and switching between straight or smooth curved lines.

Switch to Area Charts

Enable the "Fill Area Below Line" option to quickly transform your line chart into an area chart, emphasizing the volume and magnitude of your data.

Professional Color Palettes

Apply pre-designed, aesthetically pleasing color themes with a single click, ensuring your chart matches the tone of your presentation or brand.

Export High-Resolution PNGs

Download your finished chart as a clear PNG image, ready for embedding in slides or printing in documents.

Secure Browser-Based Processing

All data input and chart generation happen locally in your browser, meaning your data is never sent to or stored on our servers.

Ideal For

Compare Multiple Datasets

Add rows and columns to draw multiple line charts simultaneously. Combine and compare the trends of different metrics, such as sales and customer traffic, on a single graph.

Emphasize Overall Trends

Turn on the "Fill under graph" option to create an area chart, which lets you visualize overall changes and trends more dynamically.

Clean, Modern Styling

Set smooth curves with rounded corners for a modern look. Grid lines and point sizes are fully adjustable.

Professional Color Schemes

Select a color theme like Nord or Dracula to apply a consistent, polished palette with one click.

High-Quality Image Export

Download your chart as a high-resolution PNG with one click. Ready for slides, reports, or social media.

Frequently Asked Questions (FAQ)
Can I use it on smartphones or tablets?
Yes, you can comfortably use it not only on PCs but also from the browser on smartphones and tablets. It is very convenient when you want to quickly create a chart on the go.
Can I use the created charts for commercial purposes?
Yes, the chart images created with this tool can be used freely and free of charge for personal or corporate use, in proposals, presentations, websites, blogs, etc.
Will the entered data be seen by third parties?
All data processing in this tool is performed entirely within your browser, so your entered values are never sent to or stored on our servers.
Can I change the chart colors to my liking?
Yes, you can choose from pre-prepared color themes (Nord, Dracula, Retro, etc.), and you can also specify your preferred colors individually for each line from the color palette.
Can I make the background of the chart transparent?
Currently, transparent backgrounds are not supported, but you can set your preferred background color from the background settings to match the tone of your site or materials.
How can I make a line chart easier to read?
Use distinct colors for each line and limit the number of lines to 3-5 per chart. Utilizing data labels to show specific values and enabling smooth curves also helps improve readability.
When should I use a line chart versus a bar chart?
Choose a line chart to show "changes" or "trends" over time. If you need to compare the "size or amount" between different categories, a bar chart is a better choice.
What are some tips for designing a stylish line chart?
Try making the lines slightly thinner and turning on the "Make Curved" option for a sleek, modern look. Using the built-in color themes (like Nord or Dracula) makes it easy to achieve a professional color palette.
What kind of data is best suited for a line chart?
Line charts are excellent for visualizing data that changes continuously over time, such as monthly sales trends, website traffic changes, or weight tracking. They are ideal for spotting data trends and changes over time.
Why Choose This Tool?

Boost Tool's line chart maker helps you instantly visualize continuous fluctuations and overall trends in your data. By adjusting grid lines and choosing from clean color themes, you can create a chart tailored to your presentation or report. The option to switch to smooth curves (Bézier curves) or area charts makes it versatile for analyzing business metrics, tracking personal goals, or illustrating survey results, all directly in your browser.

Start charting your data now.

Related Tools
CAGR Calculator
Enter a starting value, growth rate, and time period to simulate compound growth. You can also reverse-calculate, for example: "What rate do I need to hit 10 million in a year?"
Online Bar Chart Maker
Create bar charts with custom colors, labels, and layouts.
Online Pie & Donut Chart Maker
Create and save pie and donut charts in your browser. Supports pasting data from Excel and spreadsheets.
Time Calculator
Add or subtract time, determine future or past times, and compute elapsed durations directly in your browser.
Histogram Maker
Create a histogram for free to visualize data distribution and variance. Simply copy and paste columns from Excel or CSV to instantly generate your chart.
Scatter Plot Maker
Easily create beautiful scatter plots and save them as images directly in your browser. Grouping and theme color features are also simple to use.