Two points per category connected by a line. Direct visual of before-vs-after change.
A free, animated slope chart you can read here or embed on any website, from Scrollchart.
Slope Chart
A slope chart plots exactly two points per category, one at a "before" time and one at an "after" time, then connects them with a line. The slope of each line is the central message: steep upward lines signal large gains, steep downward lines signal large drops, and flat lines indicate stability. By reading all the lines together, viewers can see which categories rose the most, which fell, and how the rankings reshuffled between the two periods.
The format excels when there are too many categories for a standard grouped bar chart and when the direction and magnitude of change, rather than absolute values, are what matter. Common deployments include country-ranking comparisons, pre/post experimental results, and annual survey score changes across departments.
Editorial pages where a quick visual replaces a wall of text
Content-marketing posts that need a clean, branded illustration
Source & accuracy
This slope chart is an editorial illustration built to represent the concept accurately. Where it shows figures, they are typical or representative values chosen to make the relationship clear, not a single underlying dataset. The diagram and its explainer are reviewed and maintained centrally, and updated over time as understanding improves.
Two time points with linear connection
A slope chart plots two points for each item (left for the starting value, right for the ending value) and connects them with a line. The slope of the line shows the direction and rate of change. Steep upward slopes signal improvement; downward slopes show decline. Flat lines mean no change.
This format is ideal for before-and-after stories: unemployment rates in 2020 versus 2024, test scores before and after an intervention, or market share shifts across two quarters.
Why slopes beat bars for change magnitude
Bar charts comparing two time periods side-by-side work, but they don't emphasize the change itself. Slope charts force the eye to follow the trajectory from one time point to the next, making the narrative of change (improvement, stagnation, decline) immediate and visual.
Embed this diagram
Add this animated slope chart to your own site. Copy one line of HTML, or use the embed builder for theme and sizing options.
Reference
What this is
A free, embeddable, animated slope chart for any website.
Who uses it
Data journalists, Researchers & academics, Content marketers, News organizations.
How to embed
Copy one line of HTML. No signup. No watermark. Works in WordPress, Webflow, Ghost, Substack, plain HTML.
File size
iframe embed, ~80 KB gzipped (loads on demand, does not block your page paint).
License
Free forever. Editorial explainer text included; updated centrally over time.
Copy the universal HTML snippet, the WordPress shortcode, or an iframe fallback -
see the WordPress plugin page for details. Any format keeps
the same Core Web Vitals profile and the same explainer text.
By embedding, you acknowledge the diagram and explainer text are served from scrollchart.com and may be updated from time to time to reflect new research or to link to relevant sources within the explainer.
Frequently asked questions
Where can I get a free animated "Slope Chart" for my website?
Scrollchart provides "Slope Chart" as a free, embeddable animated diagram you can add to any website with one line of HTML. No signup is required and there is no watermark. The diagram and its explainer text are served from scrollchart.com, so the embed stays current without any maintenance on your end.
How do I embed a slope chart in a blog post or article?
Paste the one-line HTML snippet from the Scrollchart diagram page into your post editor. It works in WordPress, Webflow, Ghost, and plain HTML with no plugin required. The animated diagram and its explainer text load from scrollchart.com and render directly in your page DOM.