Slope chart generator

Slope chart

Highlight rank or value changes between two points in time. Create a private, publication-ready slope chart directly in your browser without transmitting sensitive rows off-device. Data is processed locally on your hardware with zero server uploads, enabling instant export to SVG, PNG, and Excel data.

Change over timerankingchangebefore-after

Edit the data, then export.

Everything runs in your browser. Your data is not uploaded.

Data

Paste tab-separated data from Excel or edit the cells directly.

Paste or import table data

Paste a header row, or choose a local CSV/TSV file. Files are read in this browser and capped at 500 rows.

Choose CSV/TSV

Appearance

Chart title

Palette

Width Data labels Gridlines Axes LegendBackground

Preview

Sample preview of the example data. The live chart takes over as soon as you start working.

SVG, PNG, and Excel exports are generated locally in this browser. PowerPoint export is temporarily unavailable while its dependency path is reviewed for a high-severity image parser advisory.

Temporal Dynamics & Trend Analysis

A slope chart (or slopegraph) visualizes transitions in rankings, values, or proportions between exactly two points in time or conditions. It operates by drawing straight line segments that connect matching entities across two vertical axes. The slope of each line immediately reveals the direction and magnitude of change, making it highly effective for before-and-after comparisons. All data processing and rendering for this chart happens entirely locally on your machine, ensuring your datasets are never uploaded to a remote server.

Time-Series Layout & Column Schema

Format input columns for slope chart with explicit headers and numerical measurements. Verify that rows represent discrete categories or observations without unformatted symbol artifacts.

Sample Time Series Matrix

| Country | 2015 Renewable Share (%) | 2025 Renewable Share (%) |

Design Rules for Longitudinal Data

Ensure sufficient visual distinction for slope chart marks across standard and high-contrast viewports.
Align text labels horizontally whenever possible to improve cognitive readability for slope chart elements.
Double-check scale boundaries and zero-anchors before exporting slope chart presentation artwork.

Data shape: Category, starting value, and ending value columns
Exports: SVG, PNG, and Excel data; PowerPoint export is temporarily unavailable pending dependency review.

How it works

You edit a table in this page. The renderer draws an SVG from those rows in your browser, then you can download SVG, PNG, or Excel data. The table is not uploaded to any external processing server.

Frequently asked questions

When should I use a slope chart instead of a bar chart?

Use a slope chart when you want to show rank changes, rate of increase/decrease, and relative positioning between two specific points in time.

Area chartEmphasize the magnitude of change and the total across an ordered dimension.Open Line chartShow movement over an ordered or continuous dimension such as time.Open Solar pathShow the path of a sun position across an azimuth-and-altitude view using local synthetic or measured observations.Open Threshold encodingMark observations above or below a reference threshold while keeping the underlying trend visible.Open

Reviewed 16 August 2026.